Merge tag 'drm/tegra/for-5.20-rc1' of https://gitlab.freedesktop.org/drm/tegra into drm-next

drm/tegra: Changes for v5.20-rc1

The bulk of these changes adds support for context isolation for the
various supported host1x engines, as well as support for the hardware
found on the new Tegra234 SoC generation.

There's also a couple of fixes and cleanups. To round things off, the
device tree bindings are converted to the new json-schema format that
allows DTBs to be validated.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220708181136.673789-1-thierry.reding@gmail.com

Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.txt

-NVIDIA Tegra MIPI pad calibration controller
-
-Required properties:
-- compatible: "nvidia,tegra<chip>-mipi"
-- reg: Physical base address and length of the controller's registers.
-- clocks: Must contain an entry for each entry in clock-names.
-  See ../clocks/clock-bindings.txt for details.
-- clock-names: Must include the following entries:
-  - mipi-cal
-- #nvidia,mipi-calibrate-cells: Should be 1. The cell is a bitmask of the pads
-  that need to be calibrated for a given device.
-
-User nodes need to contain an nvidia,mipi-calibrate property that has a
-phandle to refer to the calibration controller node and a bitmask of the pads
-that need to be calibrated.
-
-Example:
-
-	mipi: mipi@700e3000 {
-		compatible = "nvidia,tegra114-mipi";
-		reg = <0x700e3000 0x100>;
-		clocks = <&tegra_car TEGRA114_CLK_MIPI_CAL>;
-		clock-names = "mipi-cal";
-		#nvidia,mipi-calibrate-cells = <1>;
-	};
-
-	...
-
-	host1x@50000000 {
-		...
-
-		dsi@54300000 {
-			...
-
-			nvidia,mipi-calibrate = <&mipi 0x060>;
-
-			...
-		};
-
-		...
-	};

Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra114-mipi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra MIPI pad calibration controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^mipi@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra114-mipi
+      - nvidia,tegra210-mipi
+      - nvidia,tegra186-mipi
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+
+  clock-names:
+    items:
+      - const: mipi-cal
+
+  power-domains:
+    maxItems: 1
+
+  "#nvidia,mipi-calibrate-cells":
+    description: The number of cells in a MIPI calibration specifier.
+      Should be 1. The single cell specifies a bitmask of the pads that
+      need to be calibrated for a given device.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    const: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#nvidia,mipi-calibrate-cells"
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra114-car.h>
+
+    mipi@700e3000 {
+        compatible = "nvidia,tegra114-mipi";
+        reg = <0x700e3000 0x100>;
+        clocks = <&tegra_car TEGRA114_CLK_MIPI_CAL>;
+        clock-names = "mipi-cal";
+        #nvidia,mipi-calibrate-cells = <1>;
+    };
+
+    dsia: dsi@54300000 {
+        compatible = "nvidia,tegra114-dsi";
+        reg = <0x54300000 0x00040000>;
+        clocks = <&tegra_car TEGRA114_CLK_DSIA>,
+                 <&tegra_car TEGRA114_CLK_DSIALP>,
+                 <&tegra_car TEGRA114_CLK_PLL_D_OUT0>;
+        clock-names = "dsi", "lp", "parent";
+        resets = <&tegra_car 48>;
+        reset-names = "dsi";
+        nvidia,mipi-calibrate = <&mipi 0x060>; /* DSIA & DSIB pads */
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-dpaux.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra124-dpaux.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra DisplayPort AUX Interface
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+description: |
+  The Tegra Display Port Auxiliary (DPAUX) pad controller manages two
+  pins which can be assigned to either the DPAUX channel or to an I2C
+  controller.
+
+  When configured for DisplayPort AUX operation, the DPAUX controller
+  can also be used to communicate with a DisplayPort device using the
+  AUX channel.
+
+properties:
+  $nodename:
+    pattern: "^dpaux@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - enum:
+          - nvidia,tegra124-dpaux
+          - nvidia,tegra210-dpaux
+          - nvidia,tegra186-dpaux
+          - nvidia,tegra194-dpaux
+
+      - items:
+          - const: nvidia,tegra132-dpaux
+          - const: nvidia,tegra124-dpaux
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock input for the DPAUX hardware
+      - description: reference clock
+
+  clock-names:
+    items:
+      - const: dpaux
+      - const: parent
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: dpaux
+
+  power-domains:
+    maxItems: 1
+
+  i2c-bus:
+    description: Subnode where I2C slave devices are listed. This
+      subnode must be always present. If there are no I2C slave
+      devices, an empty node should be added. See ../../i2c/i2c.yaml
+      for more information.
+    type: object
+
+  aux-bus:
+    $ref: /schemas/display/dp-aux-bus.yaml#
+
+  vdd-supply:
+    description: phandle of a supply that powers the DisplayPort
+      link
+
+patternProperties:
+  "^pinmux-[a-z0-9]+$":
+    description:
+      Since only three configurations are possible, only three child
+      nodes are needed to describe the pin mux'ing options for the
+      DPAUX pads. Furthermore, given that the pad functions are only
+      applicable to a single set of pads, the child nodes only need
+      to describe the pad group the functions are being applied to
+      rather than the individual pads.
+    type: object
+    properties:
+      groups:
+        const: dpaux-io
+
+      function:
+        enum:
+          - aux
+          - i2c
+          - off
+
+    additionalProperties: false
+
+    required:
+      - groups
+      - function
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra210-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    dpaux: dpaux@545c0000 {
+        compatible = "nvidia,tegra210-dpaux";
+        reg = <0x545c0000 0x00040000>;
+        interrupts = <GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA210_CLK_DPAUX>,
+                 <&tegra_car TEGRA210_CLK_PLL_DP>;
+        clock-names = "dpaux", "parent";
+        resets = <&tegra_car 181>;
+        reset-names = "dpaux";
+        power-domains = <&pd_sor>;
+        status = "disabled";
+
+        state_dpaux_aux: pinmux-aux {
+            groups = "dpaux-io";
+            function = "aux";
+        };
+
+        state_dpaux_i2c: pinmux-i2c {
+            groups = "dpaux-io";
+            function = "i2c";
+        };
+
+        state_dpaux_off: pinmux-off {
+            groups = "dpaux-io";
+            function = "off";
+        };
+
+        i2c-bus {
+            #address-cells = <1>;
+            #size-cells = <0>;
+        };
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra124-sor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra SOR Output Encoder
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+description: |
+  The Serial Output Resource (SOR) can be used to drive HDMI, LVDS, eDP
+  and DP outputs.
+
+properties:
+  $nodename:
+    pattern: "^sor@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - enum:
+          - nvidia,tegra124-sor
+          - nvidia,tegra210-sor
+          - nvidia,tegra210-sor1
+          - nvidia,tegra186-sor
+          - nvidia,tegra186-sor1
+          - nvidia,tegra194-sor
+
+      - items:
+          - const: nvidia,tegra132-sor
+          - const: nvidia,tegra124-sor
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 5
+    maxItems: 6
+
+  clock-names:
+    minItems: 5
+    maxItems: 6
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: sor
+
+  power-domains:
+    maxItems: 1
+
+  avdd-io-hdmi-dp-supply:
+    description: I/O supply for HDMI/DP
+
+  vdd-hdmi-dp-pll-supply:
+    description: PLL supply for HDMI/DP
+
+  hdmi-supply:
+    description: +5.0V HDMI connector supply, required for HDMI
+
+  # Tegra186 and later
+  nvidia,interface:
+    description: index of the SOR interface
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+
+  nvidia,ddc-i2c-bus:
+    description: phandle of an I2C controller used for DDC EDID
+      probing
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  nvidia,hpd-gpio:
+    description: specifies a GPIO used for hotplug detection
+    maxItems: 1
+
+  nvidia,edid:
+    description: supplies a binary EDID blob
+    $ref: "/schemas/types.yaml#/definitions/uint8-array"
+
+  nvidia,panel:
+    description: phandle of a display panel, required for eDP
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  nvidia,xbar-cfg:
+    description: 5 cells containing the crossbar configuration.
+      Each lane of the SOR, identified by the cell's index, is
+      mapped via the crossbar to the pad specified by the cell's
+      value.
+    $ref: "/schemas/types.yaml#/definitions/uint32-array"
+
+  # optional when driving an eDP output
+  nvidia,dpaux:
+    description: phandle to a DispayPort AUX interface
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra186-sor
+              - nvidia,tegra194-sor
+    then:
+      properties:
+        clocks:
+          items:
+            - description: clock input for the SOR hardware
+            - description: SOR output clock
+            - description: input for the pixel clock
+            - description: reference clock for the SOR clock
+            - description: safe reference clock for the SOR clock
+                during power up
+            - description: SOR pad output clock
+
+        clock-names:
+          items:
+            - const: sor
+            - enum:
+                - source # deprecated
+                - out
+            - const: parent
+            - const: dp
+            - const: safe
+            - const: pad
+    else:
+      properties:
+        clocks:
+          items:
+            - description: clock input for the SOR hardware
+            - description: SOR output clock
+            - description: input for the pixel clock
+            - description: reference clock for the SOR clock
+            - description: safe reference clock for the SOR clock
+                during power up
+
+        clock-names:
+          items:
+            - const: sor
+            - enum:
+                - source # deprecated
+                - out
+            - const: parent
+            - const: dp
+            - const: safe
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - avdd-io-hdmi-dp-supply
+  - vdd-hdmi-dp-pll-supply
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra210-car.h>
+    #include <dt-bindings/gpio/tegra-gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    sor0: sor@54540000 {
+        compatible = "nvidia,tegra210-sor";
+        reg = <0x54540000 0x00040000>;
+        interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA210_CLK_SOR0>,
+                 <&tegra_car TEGRA210_CLK_SOR0_OUT>,
+                 <&tegra_car TEGRA210_CLK_PLL_D_OUT0>,
+                 <&tegra_car TEGRA210_CLK_PLL_DP>,
+                 <&tegra_car TEGRA210_CLK_SOR_SAFE>;
+        clock-names = "sor", "out", "parent", "dp", "safe";
+        resets = <&tegra_car 182>;
+        reset-names = "sor";
+        pinctrl-0 = <&state_dpaux_aux>;
+        pinctrl-1 = <&state_dpaux_i2c>;
+        pinctrl-2 = <&state_dpaux_off>;
+        pinctrl-names = "aux", "i2c", "off";
+        power-domains = <&pd_sor>;
+
+        avdd-io-hdmi-dp-supply = <&avdd_1v05>;
+        vdd-hdmi-dp-pll-supply = <&vdd_1v8>;
+        hdmi-supply = <&vdd_hdmi>;
+
+        nvidia,ddc-i2c-bus = <&hdmi_ddc>;
+        nvidia,hpd-gpio = <&gpio TEGRA_GPIO(CC, 1) GPIO_ACTIVE_LOW>;
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-vic.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra124-vic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Video Image Composer
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^vic@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - enum:
+          - nvidia,tegra124-vic
+          - nvidia,tegra210-vic
+          - nvidia,tegra186-vic
+          - nvidia,tegra194-vic
+          - nvidia,tegra234-vic
+
+      - items:
+          - const: nvidia,tegra132-vic
+          - const: nvidia,tegra124-vic
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock input for the VIC hardware
+
+  clock-names:
+    items:
+      - const: vic
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: vic
+
+  power-domains:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    description: Description of the interconnect paths for the VIC;
+      see ../interconnect/interconnect.txt for details.
+    items:
+      - description: memory read client for VIC
+      - description: memory write client for VIC
+
+  interconnect-names:
+    items:
+      - const: dma-mem # read
+      - const: write
+
+  dma-coherent: true
+
+additionalProperties: false

Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra186-dc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra186 (and later) Display Controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^display@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra186-dc
+      - nvidia,tegra194-dc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: display controller pixel clock
+
+  clock-names:
+    items:
+      - const: dc
+
+  resets:
+    items:
+      - description: display controller reset
+
+  reset-names:
+    items:
+      - const: dc
+
+  power-domains:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    description: Description of the interconnect paths for the
+      display controller; see ../interconnect/interconnect.txt
+      for details.
+
+  interconnect-names:
+    items:
+      - const: dma-mem # read-0
+      - const: read-1
+
+  nvidia,outputs:
+    description: A list of phandles of outputs that this display
+      controller can drive.
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+
+  nvidia,head:
+    description: The number of the display controller head. This
+      is used to setup the various types of output to receive
+      video data from the given head.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - power-domains
+  - nvidia,outputs
+  - nvidia,head
+
+# see nvidia,tegra186-display.yaml for examples

Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dsi-padctl.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra186-dsi-padctl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra MIPI DSI pad controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^padctl@[0-9a-f]+$"
+
+  compatible:
+    const: nvidia,tegra186-dsi-padctl
+
+  reg:
+    maxItems: 1
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: dsi
+
+allOf:
+  - $ref: "/schemas/reset/reset.yaml"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/reset/tegra186-reset.h>
+
+    padctl@15880000 {
+        compatible = "nvidia,tegra186-dsi-padctl";
+        reg = <0x15880000 0x10000>;
+        resets = <&bpmp TEGRA186_RESET_DSI>;
+        reset-names = "dsi";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-dc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Display Controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^dc@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - enum:
+          - nvidia,tegra20-dc
+          - nvidia,tegra30-dc
+          - nvidia,tegra114-dc
+          - nvidia,tegra124-dc
+          - nvidia,tegra210-dc
+
+      - items:
+          - const: nvidia,tegra124-dc
+          - const: nvidia,tegra132-dc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    items:
+      - description: display controller pixel clock
+      - description: parent clock # optional
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: dc
+      - const: parent # optional
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: dc
+
+  interconnect-names: true
+  interconnects: true
+
+  iommus:
+    maxItems: 1
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the core power domain
+
+  memory-region: true
+
+  nvidia,head:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: The number of the display controller head. This is used to setup the various
+      types of output to receive video data from the given head.
+
+  nvidia,outputs:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: A list of phandles of outputs that this display controller can drive.
+
+  rgb:
+    type: object
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra20-dc
+              - nvidia,tegra30-dc
+              - nvidia,tegra114-dc
+    then:
+      properties:
+        interconnects:
+          items:
+            - description: window A memory client
+            - description: window B memory client
+            - description: window B memory client (vertical filter)
+            - description: window C memory client
+            - description: cursor memory client
+
+        interconnect-names:
+          items:
+            - const: wina
+            - const: winb
+            - const: winb-vfilter
+            - const: winc
+            - const: cursor
+
+        rgb:
+          description: Each display controller node has a child node, named "rgb", that represents
+            the RGB output associated with the controller.
+          type: object
+          properties:
+            nvidia,ddc-i2c-bus:
+              $ref: /schemas/types.yaml#/definitions/phandle
+              description: phandle of an I2C controller used for DDC EDID probing
+
+            nvidia,hpd-gpio:
+              description: specifies a GPIO used for hotplug detection
+              maxItems: 1
+
+            nvidia,edid:
+              $ref: /schemas/types.yaml#/definitions/uint8-array
+              description: supplies a binary EDID blob
+
+            nvidia,panel:
+              $ref: /schemas/types.yaml#/definitions/phandle
+              description: phandle of a display panel
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra124-dc
+    then:
+      properties:
+        interconnects:
+          minItems: 4
+          items:
+            - description: window A memory client
+            - description: window B memory client
+            - description: window C memory client
+            - description: cursor memory client
+            - description: window D memory client
+            - description: window T memory client
+
+        interconnect-names:
+          minItems: 4
+          items:
+            - const: wina
+            - const: winb
+            - const: winc
+            - const: cursor
+            - const: wind
+            - const: wint
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    dc@54200000 {
+        compatible = "nvidia,tegra20-dc";
+        reg = <0x54200000 0x00040000>;
+        interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_DISP1>;
+        clock-names = "dc";
+        resets = <&tegra_car 27>;
+        reset-names = "dc";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dsi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-dsi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Display Serial Interface
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - nvidia,tegra20-dsi
+          - nvidia,tegra30-dsi
+          - nvidia,tegra114-dsi
+          - nvidia,tegra124-dsi
+          - nvidia,tegra210-dsi
+          - nvidia,tegra186-dsi
+
+      - items:
+          - const: nvidia,tegra132-dsi
+          - const: nvidia,tegra124-dsi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+    maxItems: 3
+
+  clock-names:
+    minItems: 2
+    maxItems: 3
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: dsi
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    maxItems: 1
+
+  avdd-dsi-csi-supply:
+    description: phandle of a supply that powers the DSI controller
+
+  nvidia,mipi-calibrate:
+    description: Should contain a phandle and a specifier specifying
+      which pads are used by this DSI output and need to be
+      calibrated. See nvidia,tegra114-mipi.yaml for details.
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+
+  nvidia,ddc-i2c-bus:
+    description: phandle of an I2C controller used for DDC EDID
+      probing
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  nvidia,hpd-gpio:
+    description: specifies a GPIO used for hotplug detection
+    maxItems: 1
+
+  nvidia,edid:
+    description: supplies a binary EDID blob
+    $ref: "/schemas/types.yaml#/definitions/uint8-array"
+
+  nvidia,panel:
+    description: phandle of a display panel
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  nvidia,ganged-mode:
+    description: contains a phandle to a second DSI controller to
+      gang up with in order to support up to 8 data lanes
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+allOf:
+  - $ref: "../dsi-controller.yaml#"
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra20-dsi
+              - nvidia,tegra30-dsi
+    then:
+      properties:
+        clocks:
+          items:
+            - description: DSI module clock
+            - description: input for the pixel clock
+
+        clock-names:
+          items:
+            - const: dsi
+            - const: parent
+    else:
+      properties:
+        clocks:
+          items:
+            - description: DSI module clock
+            - description: low-power module clock
+            - description: input for the pixel clock
+
+        clock-names:
+          items:
+            - const: dsi
+            - const: lp
+            - const: parent
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nvidia,tegra186-dsi
+    then:
+      required:
+        - interrupts
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra186-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/tegra186-powergate.h>
+    #include <dt-bindings/reset/tegra186-reset.h>
+
+    dsi@15300000 {
+        compatible = "nvidia,tegra186-dsi";
+        reg = <0x15300000 0x10000>;
+        interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&bpmp TEGRA186_CLK_DSI>,
+                 <&bpmp TEGRA186_CLK_DSIA_LP>,
+                 <&bpmp TEGRA186_CLK_PLLD>;
+        clock-names = "dsi", "lp", "parent";
+        resets = <&bpmp TEGRA186_RESET_DSI>;
+        reset-names = "dsi";
+
+        power-domains = <&bpmp TEGRA186_POWER_DOMAIN_DISP>;
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-epp.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-epp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Encoder Pre-Processor
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^epp@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra20-epp
+      - nvidia,tegra30-epp
+      - nvidia,tegra114-epp
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: epp
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    maxItems: 4
+
+  interconnect-names:
+    maxItems: 4
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the core power domain
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    epp@540c0000 {
+        compatible = "nvidia,tegra20-epp";
+        reg = <0x540c0000 0x00040000>;
+        interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_EPP>;
+        resets = <&tegra_car 19>;
+        reset-names = "epp";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-gr2d.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA 2D graphics engine
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^gr2d@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra20-gr2d
+      - nvidia,tegra30-gr2d
+      - nvidia,tegra114-gr2d
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+
+  resets:
+    items:
+      - description: module reset
+      - description: memory client hotflush reset
+
+  reset-names:
+    items:
+      - const: 2d
+      - const: mc
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    maxItems: 4
+
+  interconnect-names:
+    maxItems: 4
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the HEG or core power domain
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/memory/tegra20-mc.h>
+
+    gr2d@54140000 {
+        compatible = "nvidia,tegra20-gr2d";
+        reg = <0x54140000 0x00040000>;
+        interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_GR2D>;
+        resets = <&tegra_car 21>, <&mc TEGRA20_MC_RESET_2D>;
+        reset-names = "2d", "mc";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-gr3d.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA 3D graphics engine
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^gr3d@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra20-gr3d
+      - nvidia,tegra30-gr3d
+      - nvidia,tegra114-gr3d
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    minItems: 1
+    maxItems: 2
+
+  resets:
+    minItems: 2
+    maxItems: 4
+
+  reset-names:
+    minItems: 2
+    maxItems: 4
+
+  iommus:
+    minItems: 1
+    maxItems: 2
+
+  interconnects:
+    minItems: 4
+    maxItems: 10
+
+  interconnect-names:
+    minItems: 4
+    maxItems: 10
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    minItems: 1
+    maxItems: 2
+
+  power-domain-names:
+    minItems: 2
+    maxItems: 2
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nvidia,tegra20-gr2d
+    then:
+      properties:
+        clocks:
+          items:
+            - description: module clock
+
+        clock-names:
+          items:
+            - const: 3d
+
+        resets:
+          items:
+            - description: module reset
+            - description: memory client hotflush reset
+
+        reset-names:
+          items:
+            - const: 3d
+            - const: mc
+
+        iommus:
+          maxItems: 1
+
+        interconnects:
+          minItems: 4
+          maxItems: 4
+
+        interconnect-names:
+          minItems: 4
+          maxItems: 4
+
+        power-domains:
+          items:
+            - description: phandle to the TD power domain
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nvidia,tegra30-gr3d
+    then:
+      properties:
+        clocks:
+          items:
+            - description: primary module clock
+            - description: secondary module clock
+
+        clock-names:
+          items:
+            - const: 3d
+            - const: 3d2
+
+        resets:
+          items:
+            - description: primary module reset
+            - description: secondary module reset
+            - description: primary memory client hotflush reset
+            - description: secondary memory client hotflush reset
+
+        reset-names:
+          items:
+            - const: 3d
+            - const: 3d2
+            - const: mc
+            - const: mc2
+
+        iommus:
+          minItems: 2
+          maxItems: 2
+
+        interconnects:
+          minItems: 8
+          maxItems: 8
+
+        interconnect-names:
+          minItems: 8
+          maxItems: 8
+
+        power-domains:
+          items:
+            - description: phandle to the TD power domain
+            - description: phandle to the TD2 power domain
+
+        power-domain-names:
+          items:
+            - const: 3d0
+            - const: 3d1
+
+      dependencies:
+        power-domains: [ power-domain-names ]
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nvidia,tegra114-gr2d
+    then:
+      properties:
+        clocks:
+          items:
+            - description: module clock
+
+        clock-names:
+          items:
+            - const: 3d
+
+        resets:
+          items:
+            - description: module reset
+            - description: memory client hotflush reset
+
+        reset-names:
+          items:
+            - const: 3d
+            - const: mc
+
+        iommus:
+          maxItems: 1
+
+        interconnects:
+          minItems: 10
+          maxItems: 10
+
+        interconnect-names:
+          minItems: 10
+          maxItems: 10
+
+        power-domains:
+          items:
+            - description: phandle to the TD power domain
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/memory/tegra20-mc.h>
+
+    gr3d@54180000 {
+        compatible = "nvidia,tegra20-gr3d";
+        reg = <0x54180000 0x00040000>;
+        clocks = <&tegra_car TEGRA20_CLK_GR3D>;
+        resets = <&tegra_car 24>, <&mc TEGRA20_MC_RESET_3D>;
+        reset-names = "3d", "mc";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra HDMI Output Encoder
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^hdmi@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - enum:
+          - nvidia,tegra20-hdmi
+          - nvidia,tegra30-hdmi
+          - nvidia,tegra114-hdmi
+          - nvidia,tegra124-hdmi
+
+      - items:
+          - const: nvidia,tegra132-hdmi
+          - const: nvidia,tegra124-hdmi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+      - description: parent clock
+
+  clock-names:
+    items:
+      - const: hdmi
+      - const: parent
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: hdmi
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the core power domain
+
+  hdmi-supply:
+    description: supply for the +5V HDMI connector pin
+
+  vdd-supply:
+    description: regulator for supply voltage
+
+  pll-supply:
+    description: regulator for PLL
+
+  nvidia,ddc-i2c-bus:
+    description: phandle of an I2C controller used for DDC EDID
+      probing
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  nvidia,hpd-gpio:
+    description: specifies a GPIO used for hotplug detection
+    maxItems: 1
+
+  nvidia,edid:
+    description: supplies a binary EDID blob
+    $ref: "/schemas/types.yaml#/definitions/uint8-array"
+
+  nvidia,panel:
+    description: phandle of a display panel
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  "#sound-dai-cells":
+    const: 0
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - pll-supply
+  - vdd-supply
+  - nvidia,ddc-i2c-bus
+  - nvidia,hpd-gpio
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra124-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/gpio/tegra-gpio.h>
+
+    hdmi@54280000 {
+        compatible = "nvidia,tegra124-hdmi";
+        reg = <0x54280000 0x00040000>;
+        interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA124_CLK_HDMI>,
+                 <&tegra_car TEGRA124_CLK_PLL_D2_OUT0>;
+        clock-names = "hdmi", "parent";
+        resets = <&tegra_car 51>;
+        reset-names = "hdmi";
+
+        hdmi-supply = <&vdd_5v0_hdmi>;
+        pll-supply = <&vdd_hdmi_pll>;
+        vdd-supply = <&vdd_3v3_hdmi>;
+
+        nvidia,ddc-i2c-bus = <&hdmi_ddc>;
+        nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-isp.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-isp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra ISP processor
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  compatible:
+    enum:
+      - nvidia,tegra20-isp
+      - nvidia,tegra30-isp
+      - nvidia,tegra210-isp
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: isp
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    items:
+      - description: memory write client
+
+  interconnect-names:
+    items:
+      - const: dma-mem # write
+
+  power-domains:
+    items:
+      - description: phandle to the VENC or core power domain
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    isp@54100000 {
+        compatible = "nvidia,tegra20-isp";
+        reg = <0x54100000 0x00040000>;
+        interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_ISP>;
+        resets = <&tegra_car 23>;
+        reset-names = "isp";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-mpe.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-mpe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Video Encoder
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^mpe@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra20-mpe
+      - nvidia,tegra30-mpe
+      - nvidia,tegra114-mpe
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: mpe
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    minItems: 6
+    maxItems: 6
+
+  interconnect-names:
+    minItems: 6
+    maxItems: 6
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the MPE power domain
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    mpe@54040000 {
+        compatible = "nvidia,tegra20-mpe";
+        reg = <0x54040000 0x00040000>;
+        interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_MPE>;
+        resets = <&tegra_car 60>;
+        reset-names = "mpe";
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-tvo.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-tvo.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra TV Encoder Output
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^tvo@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra20-tvo
+      - nvidia,tegra30-tvo
+      - nvidia,tegra114-tvo
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the core power domain
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    tvo@542c0000 {
+        compatible = "nvidia,tegra20-tvo";
+        reg = <0x542c0000 0x00040000>;
+        interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_TVO>;
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-vi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra Video Input controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^vi@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - const: nvidia,tegra20-vi
+      - const: nvidia,tegra30-vi
+      - const: nvidia,tegra114-vi
+      - const: nvidia,tegra124-vi
+      - items:
+          - const: nvidia,tegra132-vi
+          - const: nvidia,tegra124-vi
+      - const: nvidia,tegra210-vi
+      - const: nvidia,tegra186-vi
+      - const: nvidia,tegra194-vi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    items:
+      - description: module reset
+
+  reset-names:
+    items:
+      - const: vi
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    minItems: 4
+    maxItems: 5
+
+  interconnect-names:
+    minItems: 4
+    maxItems: 5
+
+  operating-points-v2:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  power-domains:
+    items:
+      - description: phandle to the VENC power domain
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges:
+    maxItems: 1
+
+  avdd-dsi-csi-supply:
+    description: DSI/CSI power supply. Must supply 1.2 V.
+
+patternProperties:
+  "^csi@[0-9a-f]+$":
+    type: object
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra20-vi
+              - nvidia,tegra30-vi
+              - nvidia,tegra114-vi
+              - nvidia,tegra124-vi
+    then:
+      required:
+        - resets
+        - reset-names
+    else:
+      required:
+        - power-domains
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra20-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    vi@54080000 {
+        compatible = "nvidia,tegra20-vi";
+        reg = <0x54080000 0x00040000>;
+        interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&tegra_car TEGRA20_CLK_VI>;
+        resets = <&tegra_car 100>;
+        reset-names = "vi";
+    };
+
+  - |
+    #include <dt-bindings/clock/tegra210-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    vi@54080000 {
+        compatible = "nvidia,tegra210-vi";
+        reg = <0x54080000 0x00000700>;
+        interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+        assigned-clocks = <&tegra_car TEGRA210_CLK_VI>;
+        assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_C4_OUT0>;
+
+        clocks = <&tegra_car TEGRA210_CLK_VI>;
+        power-domains = <&pd_venc>;
+
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        ranges = <0x0 0x54080000 0x2000>;
+
+        csi@838 {
+            compatible = "nvidia,tegra210-csi";
+            reg = <0x838 0x1300>;
+            assigned-clocks = <&tegra_car TEGRA210_CLK_CILAB>,
+                              <&tegra_car TEGRA210_CLK_CILCD>,
+                              <&tegra_car TEGRA210_CLK_CILE>,
+                              <&tegra_car TEGRA210_CLK_CSI_TPG>;
+            assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_P>,
+                                     <&tegra_car TEGRA210_CLK_PLL_P>,
+                                     <&tegra_car TEGRA210_CLK_PLL_P>;
+            assigned-clock-rates = <102000000>,
+                                   <102000000>,
+                                   <102000000>,
+                                   <972000000>;
+
+            clocks = <&tegra_car TEGRA210_CLK_CSI>,
+                     <&tegra_car TEGRA210_CLK_CILAB>,
+                     <&tegra_car TEGRA210_CLK_CILCD>,
+                     <&tegra_car TEGRA210_CLK_CILE>,
+                     <&tegra_car TEGRA210_CLK_CSI_TPG>;
+            clock-names = "csi", "cilab", "cilcd", "cile", "csi_tpg";
+            power-domains = <&pd_sor>;
+        };
+    };

Documentation/devicetree/bindings/display/tegra/nvidia,tegra210-csi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra210-csi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra CSI controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^csi@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - nvidia,tegra210-csi
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: module clock
+      - description: A/B lanes clock
+      - description: C/D lanes clock
+      - description: E lane clock
+      - description: test pattern generator clock
+
+  clock-names:
+    items:
+      - const: csi
+      - const: cilab
+      - const: cilcd
+      - const: cile
+      - const: csi_tpg
+
+  power-domains:
+    maxItems: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - power-domains
+
+# see nvidia,tegra20-vi.yaml for an example

Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-dpaux-padctl.txt

-Device tree binding for NVIDIA Tegra DPAUX pad controller
-========================================================
-
-The Tegra Display Port Auxiliary (DPAUX) pad controller manages two pins
-which can be assigned to either the DPAUX channel or to an I2C
-controller.
-
-This document defines the device-specific binding for the DPAUX pad
-controller. Refer to pinctrl-bindings.txt in this directory for generic
-information about pin controller device tree bindings. Please refer to
-the binding document ../display/tegra/nvidia,tegra20-host1x.txt for more
-details on the DPAUX binding.
-
-Pin muxing:
------------
-
-Child nodes contain the pinmux configurations following the conventions
-from the pinctrl-bindings.txt document.
-
-Since only three configurations are possible, only three child nodes are
-needed to describe the pin mux'ing options for the DPAUX pads.
-Furthermore, given that the pad functions are only applicable to a
-single set of pads, the child nodes only need to describe the pad group
-the functions are being applied to rather than the individual pads.
-
-Required properties:
-- groups: Must be "dpaux-io"
-- function: Must be either "aux", "i2c" or "off".
-
-Example:
---------
-
-	dpaux@545c0000 {
-		...
-
-		state_dpaux_aux: pinmux-aux {
-			groups = "dpaux-io";
-			function = "aux";
-		};
-
-		state_dpaux_i2c: pinmux-i2c {
-			groups = "dpaux-io";
-			function = "i2c";
-		};
-
-		state_dpaux_off: pinmux-off {
-			groups = "dpaux-io";
-			function = "off";
-		};
-	};
-
-	...
-
-	i2c@7000d100 {
-		...
-		pinctrl-0 = <&state_dpaux_i2c>;
-		pinctrl-1 = <&state_dpaux_off>;
-		pinctrl-names = "default", "idle";
-	};

MAINTAINERS

@@ -6748,7 +6748,7 @@ L:	dri-devel@lists.freedesktop.org
 L:	linux-tegra@vger.kernel.org
 S:	Supported
 T:	git git://anongit.freedesktop.org/tegra/linux.git
-F:	Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+F:	Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
 F:	Documentation/devicetree/bindings/gpu/host1x/
 F:	drivers/gpu/drm/tegra/
 F:	drivers/gpu/host1x/
@@ -19682,7 +19682,7 @@ M:	Sowjanya Komatineni <skomatineni@nvidia.com>
 L:	linux-media@vger.kernel.org
 L:	linux-tegra@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+F:	Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
 F:	drivers/staging/media/tegra-video/
 
 TEGRA XUSB PADCTL DRIVER

drivers/gpu/drm/tegra/dc.c

@@ -7,6 +7,7 @@
 #include <linux/clk.h>
 #include <linux/debugfs.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/iommu.h>
 #include <linux/interconnect.h>
 #include <linux/module.h>

drivers/gpu/drm/tegra/drm.c

@@ -1381,6 +1381,7 @@ static const struct of_device_id host1x_drm_subdevs[] = {
 	{ .compatible = "nvidia,tegra194-sor", },
 	{ .compatible = "nvidia,tegra194-vic", },
 	{ .compatible = "nvidia,tegra194-nvdec", },
+	{ .compatible = "nvidia,tegra234-vic", },
 	{ /* sentinel */ }
 };
 

drivers/gpu/drm/tegra/drm.h

@@ -80,6 +80,7 @@ struct tegra_drm_context {
 
 	/* Only used by new UAPI. */
 	struct xarray mappings;
+	struct host1x_memory_context *memory_context;
 };
 
 struct tegra_drm_client_ops {
@@ -91,12 +92,22 @@ struct tegra_drm_client_ops {
 	int (*submit)(struct tegra_drm_context *context,
 		      struct drm_tegra_submit *args, struct drm_device *drm,
 		      struct drm_file *file);
+	int (*get_streamid_offset)(struct tegra_drm_client *client, u32 *offset);
+	int (*can_use_memory_ctx)(struct tegra_drm_client *client, bool *supported);
 };
 
 int tegra_drm_submit(struct tegra_drm_context *context,
 		     struct drm_tegra_submit *args, struct drm_device *drm,
 		     struct drm_file *file);
 
+static inline int
+tegra_drm_get_streamid_offset_thi(struct tegra_drm_client *client, u32 *offset)
+{
+	*offset = 0x30;
+
+	return 0;
+}
+
 struct tegra_drm_client {
 	struct host1x_client base;
 	struct list_head list;

drivers/gpu/drm/tegra/falcon.c

@@ -48,6 +48,14 @@ static int falcon_copy_chunk(struct falcon *falcon,
 	if (target == FALCON_MEMORY_IMEM)
 		cmd |= FALCON_DMATRFCMD_IMEM;
 
+	/*
+	 * Use second DMA context (i.e. the one for firmware). Strictly
+	 * speaking, at this point both DMA contexts point to the firmware
+	 * stream ID, but this register's value will be reused by the firmware
+	 * for later DMA transactions, so we need to use the correct value.
+	 */
+	cmd |= FALCON_DMATRFCMD_DMACTX(1);
+
 	falcon_writel(falcon, offset, FALCON_DMATRFMOFFS);
 	falcon_writel(falcon, base, FALCON_DMATRFFBOFFS);
 	falcon_writel(falcon, cmd, FALCON_DMATRFCMD);

drivers/gpu/drm/tegra/falcon.h

@@ -50,6 +50,7 @@
 #define FALCON_DMATRFCMD_IDLE			(1 << 1)
 #define FALCON_DMATRFCMD_IMEM			(1 << 4)
 #define FALCON_DMATRFCMD_SIZE_256B		(6 << 8)
+#define FALCON_DMATRFCMD_DMACTX(v)		(((v) & 0x7) << 12)
 
 #define FALCON_DMATRFFBOFFS			0x0000111c
 

drivers/gpu/drm/tegra/gem.c

@@ -704,14 +704,23 @@ static int tegra_gem_prime_vmap(struct dma_buf *buf, struct iosys_map *map)
 {
 	struct drm_gem_object *gem = buf->priv;
 	struct tegra_bo *bo = to_tegra_bo(gem);
+	void *vaddr;
 
-	iosys_map_set_vaddr(map, bo->vaddr);
+	vaddr = tegra_bo_mmap(&bo->base);
+	if (IS_ERR(vaddr))
+		return PTR_ERR(vaddr);
+
+	iosys_map_set_vaddr(map, vaddr);
 
 	return 0;
 }
 
 static void tegra_gem_prime_vunmap(struct dma_buf *buf, struct iosys_map *map)
 {
+	struct drm_gem_object *gem = buf->priv;
+	struct tegra_bo *bo = to_tegra_bo(gem);
+
+	tegra_bo_munmap(&bo->base, map->vaddr);
 }
 
 static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {

drivers/gpu/drm/tegra/hub.c

@@ -5,6 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/host1x.h>
 #include <linux/module.h>
 #include <linux/of.h>

drivers/gpu/drm/tegra/nvdec.c

@@ -5,6 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/host1x.h>
 #include <linux/iommu.h>
 #include <linux/module.h>
@@ -21,6 +22,8 @@
 #include "falcon.h"
 #include "vic.h"
 
+#define NVDEC_TFBIF_TRANSCFG			0x2c44
+
 struct nvdec_config {
 	const char *firmware;
 	unsigned int version;
@@ -63,7 +66,7 @@ static int nvdec_boot(struct nvdec *nvdec)
 		u32 value;
 
 		value = TRANSCFG_ATT(1, TRANSCFG_SID_FALCON) | TRANSCFG_ATT(0, TRANSCFG_SID_HW);
-		nvdec_writel(nvdec, value, VIC_TFBIF_TRANSCFG);
+		nvdec_writel(nvdec, value, NVDEC_TFBIF_TRANSCFG);
 
 		if (spec->num_ids > 0) {
 			value = spec->ids[0] & 0xffff;
@@ -304,10 +307,19 @@ static void nvdec_close_channel(struct tegra_drm_context *context)
 	host1x_channel_put(context->channel);
 }
 
+static int nvdec_can_use_memory_ctx(struct tegra_drm_client *client, bool *supported)
+{
+	*supported = true;
+
+	return 0;
+}
+
 static const struct tegra_drm_client_ops nvdec_ops = {
 	.open_channel = nvdec_open_channel,
 	.close_channel = nvdec_close_channel,
 	.submit = tegra_drm_submit,
+	.get_streamid_offset = tegra_drm_get_streamid_offset_thi,
+	.can_use_memory_ctx = nvdec_can_use_memory_ctx,
 };
 
 #define NVIDIA_TEGRA_210_NVDEC_FIRMWARE "nvidia/tegra210/nvdec.bin"

drivers/gpu/drm/tegra/plane.c

@@ -3,6 +3,7 @@
  * Copyright (C) 2017 NVIDIA CORPORATION.  All rights reserved.
  */
 
+#include <linux/dma-mapping.h>
 #include <linux/iommu.h>
 #include <linux/interconnect.h>
 

drivers/gpu/drm/tegra/submit.c

@@ -498,6 +498,9 @@ static void release_job(struct host1x_job *job)
 	struct tegra_drm_submit_data *job_data = job->user_data;
 	u32 i;
 
+	if (job->memory_context)
+		host1x_memory_context_put(job->memory_context);
+
 	for (i = 0; i < job_data->num_used_mappings; i++)
 		tegra_drm_mapping_put(job_data->used_mappings[i].mapping);
 
@@ -588,11 +591,51 @@ int tegra_drm_ioctl_channel_submit(struct drm_device *drm, void *data,
 		goto put_job;
 	}
 
+	if (context->client->ops->get_streamid_offset) {
+		err = context->client->ops->get_streamid_offset(
+			context->client, &job->engine_streamid_offset);
+		if (err) {
+			SUBMIT_ERR(context, "failed to get streamid offset: %d", err);
+			goto unpin_job;
+		}
+	}
+
+	if (context->memory_context && context->client->ops->can_use_memory_ctx) {
+		bool supported;
+
+		err = context->client->ops->can_use_memory_ctx(context->client, &supported);
+		if (err) {
+			SUBMIT_ERR(context, "failed to detect if engine can use memory context: %d", err);
+			goto unpin_job;
+		}
+
+		if (supported) {
+			job->memory_context = context->memory_context;
+			host1x_memory_context_get(job->memory_context);
+		}
+	} else if (context->client->ops->get_streamid_offset) {
+#ifdef CONFIG_IOMMU_API
+		struct iommu_fwspec *spec;
+
+		/*
+		 * Job submission will need to temporarily change stream ID,
+		 * so need to tell it what to change it back to.
+		 */
+		spec = dev_iommu_fwspec_get(context->client->base.dev);
+		if (spec && spec->num_ids > 0)
+			job->engine_fallback_streamid = spec->ids[0] & 0xffff;
+		else
+			job->engine_fallback_streamid = 0x7f;
+#else
+		job->engine_fallback_streamid = 0x7f;
+#endif
+	}
+
 	/* Boot engine. */
 	err = pm_runtime_resume_and_get(context->client->base.dev);
 	if (err < 0) {
 		SUBMIT_ERR(context, "could not power up engine: %d", err);
-		goto unpin_job;
+		goto put_memory_context;
 	}
 
 	job->user_data = job_data;
@@ -627,6 +670,9 @@ int tegra_drm_ioctl_channel_submit(struct drm_device *drm, void *data,
 
 	goto put_job;
 
+put_memory_context:
+	if (job->memory_context)
+		host1x_memory_context_put(job->memory_context);
 unpin_job:
 	host1x_job_unpin(job);
 put_job:

drivers/gpu/drm/tegra/uapi.c

@@ -33,6 +33,9 @@ static void tegra_drm_channel_context_close(struct tegra_drm_context *context)
 	struct tegra_drm_mapping *mapping;
 	unsigned long id;
 
+	if (context->memory_context)
+		host1x_memory_context_put(context->memory_context);
+
 	xa_for_each(&context->mappings, id, mapping)
 		tegra_drm_mapping_put(mapping);
 
@@ -72,6 +75,7 @@ static struct tegra_drm_client *tegra_drm_find_client(struct tegra_drm *tegra, u
 
 int tegra_drm_ioctl_channel_open(struct drm_device *drm, void *data, struct drm_file *file)
 {
+	struct host1x *host = tegra_drm_to_host1x(drm->dev_private);
 	struct tegra_drm_file *fpriv = file->driver_priv;
 	struct tegra_drm *tegra = drm->dev_private;
 	struct drm_tegra_channel_open *args = data;
@@ -102,10 +106,36 @@ int tegra_drm_ioctl_channel_open(struct drm_device *drm, void *data, struct drm_
 		}
 	}
 
+	/* Only allocate context if the engine supports context isolation. */
+	if (device_iommu_mapped(client->base.dev) && client->ops->can_use_memory_ctx) {
+		bool supported;
+
+		err = client->ops->can_use_memory_ctx(client, &supported);
+		if (err)
+			goto put_channel;
+
+		if (supported)
+			context->memory_context = host1x_memory_context_alloc(
+				host, get_task_pid(current, PIDTYPE_TGID));
+
+		if (IS_ERR(context->memory_context)) {
+			if (PTR_ERR(context->memory_context) != -EOPNOTSUPP) {
+				err = PTR_ERR(context->memory_context);
+				goto put_channel;
+			} else {
+				/*
+				 * OK, HW does not support contexts or contexts
+				 * are disabled.
+				 */
+				context->memory_context = NULL;
+			}
+		}
+	}
+
 	err = xa_alloc(&fpriv->contexts, &args->context, context, XA_LIMIT(1, U32_MAX),
 		       GFP_KERNEL);
 	if (err < 0)
-		goto put_channel;
+		goto put_memctx;
 
 	context->client = client;
 	xa_init_flags(&context->mappings, XA_FLAGS_ALLOC1);
@@ -118,6 +148,9 @@ int tegra_drm_ioctl_channel_open(struct drm_device *drm, void *data, struct drm_
 
 	return 0;
 
+put_memctx:
+	if (context->memory_context)
+		host1x_memory_context_put(context->memory_context);
 put_channel:
 	host1x_channel_put(context->channel);
 free:
@@ -156,6 +189,7 @@ int tegra_drm_ioctl_channel_map(struct drm_device *drm, void *data, struct drm_f
 	struct tegra_drm_mapping *mapping;
 	struct tegra_drm_context *context;
 	enum dma_data_direction direction;
+	struct device *mapping_dev;
 	int err = 0;
 
 	if (args->flags & ~DRM_TEGRA_CHANNEL_MAP_READ_WRITE)
@@ -177,6 +211,11 @@ int tegra_drm_ioctl_channel_map(struct drm_device *drm, void *data, struct drm_f
 
 	kref_init(&mapping->ref);
 
+	if (context->memory_context)
+		mapping_dev = &context->memory_context->dev;
+	else
+		mapping_dev = context->client->base.dev;
+
 	mapping->bo = tegra_gem_lookup(file, args->handle);
 	if (!mapping->bo) {
 		err = -EINVAL;
@@ -201,7 +240,7 @@ int tegra_drm_ioctl_channel_map(struct drm_device *drm, void *data, struct drm_f
 		goto put_gem;
 	}
 
-	mapping->map = host1x_bo_pin(context->client->base.dev, mapping->bo, direction, NULL);
+	mapping->map = host1x_bo_pin(mapping_dev, mapping->bo, direction, NULL);
 	if (IS_ERR(mapping->map)) {
 		err = PTR_ERR(mapping->map);
 		goto put_gem;

drivers/gpu/drm/tegra/vic.c

@@ -38,6 +38,8 @@ struct vic {
 	struct clk *clk;
 	struct reset_control *rst;
 
+	bool can_use_context;
+
 	/* Platform configuration */
 	const struct vic_config *config;
 };
@@ -229,28 +231,38 @@ static int vic_load_firmware(struct vic *vic)
 {
 	struct host1x_client *client = &vic->client.base;
 	struct tegra_drm *tegra = vic->client.drm;
+	static DEFINE_MUTEX(lock);
+	u32 fce_bin_data_offset;
 	dma_addr_t iova;
 	size_t size;
 	void *virt;
 	int err;
 
-	if (vic->falcon.firmware.virt)
-		return 0;
+	mutex_lock(&lock);
+
+	if (vic->falcon.firmware.virt) {
+		err = 0;
+		goto unlock;
+	}
 
 	err = falcon_read_firmware(&vic->falcon, vic->config->firmware);
 	if (err < 0)
-		return err;
+		goto unlock;
 
 	size = vic->falcon.firmware.size;
 
 	if (!client->group) {
 		virt = dma_alloc_coherent(vic->dev, size, &iova, GFP_KERNEL);
-		if (!virt)
-			return -ENOMEM;
+		if (!virt) {
+			err = -ENOMEM;
+			goto unlock;
+		}
 	} else {
 		virt = tegra_drm_alloc(tegra, size, &iova);
-		if (IS_ERR(virt))
-			return PTR_ERR(virt);
+		if (IS_ERR(virt)) {
+			err = PTR_ERR(virt);
+			goto unlock;
+		}
 	}
 
 	vic->falcon.firmware.virt = virt;
@@ -277,7 +289,28 @@ static int vic_load_firmware(struct vic *vic)
 		vic->falcon.firmware.phys = phys;
 	}
 
-	return 0;
+	/*
+	 * Check if firmware is new enough to not require mapping firmware
+	 * to data buffer domains.
+	 */
+	fce_bin_data_offset = *(u32 *)(virt + VIC_UCODE_FCE_DATA_OFFSET);
+
+	if (!vic->config->supports_sid) {
+		vic->can_use_context = false;
+	} else if (fce_bin_data_offset != 0x0 && fce_bin_data_offset != 0xa5a5a5a5) {
+		/*
+		 * Firmware will access FCE through STREAMID0, so context
+		 * isolation cannot be used.
+		 */
+		vic->can_use_context = false;
+		dev_warn_once(vic->dev, "context isolation disabled due to old firmware\n");
+	} else {
+		vic->can_use_context = true;
+	}
+
+unlock:
+	mutex_unlock(&lock);
+	return err;
 
 cleanup:
 	if (!client->group)
@@ -285,11 +318,12 @@ static int vic_load_firmware(struct vic *vic)
 	else
 		tegra_drm_free(tegra, size, virt, iova);
 
+	mutex_unlock(&lock);
 	return err;
 }
 
 
-static int vic_runtime_resume(struct device *dev)
+static int __maybe_unused vic_runtime_resume(struct device *dev)
 {
 	struct vic *vic = dev_get_drvdata(dev);
 	int err;
@@ -323,7 +357,7 @@ static int vic_runtime_resume(struct device *dev)
 	return err;
 }
 
-static int vic_runtime_suspend(struct device *dev)
+static int __maybe_unused vic_runtime_suspend(struct device *dev)
 {
 	struct vic *vic = dev_get_drvdata(dev);
 	int err;
@@ -358,10 +392,27 @@ static void vic_close_channel(struct tegra_drm_context *context)
 	host1x_channel_put(context->channel);
 }
 
+static int vic_can_use_memory_ctx(struct tegra_drm_client *client, bool *supported)
+{
+	struct vic *vic = to_vic(client);
+	int err;
+
+	/* This doesn't access HW so it's safe to call without powering up. */
+	err = vic_load_firmware(vic);
+	if (err < 0)
+		return err;
+
+	*supported = vic->can_use_context;
+
+	return 0;
+}
+
 static const struct tegra_drm_client_ops vic_ops = {
 	.open_channel = vic_open_channel,
 	.close_channel = vic_close_channel,
 	.submit = tegra_drm_submit,
+	.get_streamid_offset = tegra_drm_get_streamid_offset_thi,
+	.can_use_memory_ctx = vic_can_use_memory_ctx,
 };
 
 #define NVIDIA_TEGRA_124_VIC_FIRMWARE "nvidia/tegra124/vic03_ucode.bin"
@@ -396,11 +447,20 @@ static const struct vic_config vic_t194_config = {
 	.supports_sid = true,
 };
 
+#define NVIDIA_TEGRA_234_VIC_FIRMWARE "nvidia/tegra234/vic.bin"
+
+static const struct vic_config vic_t234_config = {
+	.firmware = NVIDIA_TEGRA_234_VIC_FIRMWARE,
+	.version = 0x23,
+	.supports_sid = true,
+};
+
 static const struct of_device_id tegra_vic_of_match[] = {
 	{ .compatible = "nvidia,tegra124-vic", .data = &vic_t124_config },
 	{ .compatible = "nvidia,tegra210-vic", .data = &vic_t210_config },
 	{ .compatible = "nvidia,tegra186-vic", .data = &vic_t186_config },
 	{ .compatible = "nvidia,tegra194-vic", .data = &vic_t194_config },
+	{ .compatible = "nvidia,tegra234-vic", .data = &vic_t234_config },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, tegra_vic_of_match);
@@ -409,7 +469,6 @@ static int vic_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct host1x_syncpt **syncpts;
-	struct resource *regs;
 	struct vic *vic;
 	int err;
 
@@ -430,13 +489,7 @@ static int vic_probe(struct platform_device *pdev)
 	if (!syncpts)
 		return -ENOMEM;
 
-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!regs) {
-		dev_err(&pdev->dev, "failed to get registers\n");
-		return -ENXIO;
-	}
-
-	vic->regs = devm_ioremap_resource(dev, regs);
+	vic->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(vic->regs))
 		return PTR_ERR(vic->regs);
 
@@ -539,3 +592,6 @@ MODULE_FIRMWARE(NVIDIA_TEGRA_186_VIC_FIRMWARE);
 #if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
 MODULE_FIRMWARE(NVIDIA_TEGRA_194_VIC_FIRMWARE);
 #endif
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_234_SOC)
+MODULE_FIRMWARE(NVIDIA_TEGRA_234_VIC_FIRMWARE);
+#endif

drivers/gpu/host1x/Makefile

@@ -15,7 +15,11 @@ host1x-y = \
 	hw/host1x04.o \
 	hw/host1x05.o \
 	hw/host1x06.o \
-	hw/host1x07.o
+	hw/host1x07.o \
+	hw/host1x08.o
+
+host1x-$(CONFIG_IOMMU_API) += \
+	context.o
 
 obj-$(CONFIG_TEGRA_HOST1X) += host1x.o
 obj-$(CONFIG_TEGRA_HOST1X_CONTEXT_BUS) += context_bus.o

drivers/gpu/host1x/cdma.c

@@ -457,10 +457,25 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
 				 * to offset 0xbad. This does nothing but
 				 * has a easily detected signature in debug
 				 * traces.
+				 *
+				 * On systems with MLOCK enforcement enabled,
+				 * the above 0 word writes would fall foul of
+				 * the enforcement. As such, in the first slot
+				 * put a RESTART_W opcode to the beginning
+				 * of the next job. We don't use this for older
+				 * chips since those only support the RESTART
+				 * opcode with inconvenient alignment requirements.
 				 */
+				if (i == 0 && host1x->info->has_wide_gather) {
+					unsigned int next_job = (job->first_get/8 + job->num_slots)
+						% HOST1X_PUSHBUFFER_SLOTS;
+					mapped[2*slot+0] = (0xd << 28) | (next_job * 2);
+					mapped[2*slot+1] = 0x0;
+				} else {
 					mapped[2*slot+0] = 0x1bad0000;
 					mapped[2*slot+1] = 0x1bad0000;
 				}
+			}
 
 			job->cancelled = true;
 		}
@@ -600,8 +615,8 @@ void host1x_cdma_push_wide(struct host1x_cdma *cdma, u32 op1, u32 op2,
 	struct host1x_channel *channel = cdma_to_channel(cdma);
 	struct host1x *host1x = cdma_to_host1x(cdma);
 	struct push_buffer *pb = &cdma->push_buffer;
-	unsigned int needed = 2, extra = 0, i;
 	unsigned int space = cdma->slots_free;
+	unsigned int needed = 2, extra = 0;
 
 	if (host1x_debug_trace_cmdbuf)
 		trace_host1x_cdma_push_wide(dev_name(channel->dev), op1, op2,
@@ -619,20 +634,14 @@ void host1x_cdma_push_wide(struct host1x_cdma *cdma, u32 op1, u32 op2,
 	cdma->slots_free = space - needed;
 	cdma->slots_used += needed;
 
+	if (extra > 0) {
 		/*
-	 * Note that we rely on the fact that this is only used to submit wide
-	 * gather opcodes, which consist of 3 words, and they are padded with
-	 * a NOP to avoid having to deal with fractional slots (a slot always
-	 * represents 2 words). The fourth opcode passed to this function will
-	 * therefore always be a NOP.
-	 *
-	 * This works around a slight ambiguity when it comes to opcodes. For
-	 * all current host1x incarnations the NOP opcode uses the exact same
-	 * encoding (0x20000000), so we could hard-code the value here, but a
-	 * new incarnation may change it and break that assumption.
+		 * If there isn't enough space at the tail of the pushbuffer,
+		 * insert a RESTART(0) here to go back to the beginning.
+		 * The code above adjusted the indexes appropriately.
 		 */
-	for (i = 0; i < extra; i++)
-		host1x_pushbuffer_push(pb, op4, op4);
+		host1x_pushbuffer_push(pb, (0x5 << 28), 0xdead0000);
+	}
 
 	host1x_pushbuffer_push(pb, op1, op2);
 	host1x_pushbuffer_push(pb, op3, op4);

drivers/gpu/host1x/channel.c

@@ -21,22 +21,18 @@ int host1x_channel_list_init(struct host1x_channel_list *chlist,
 	if (!chlist->channels)
 		return -ENOMEM;
 
-	chlist->allocated_channels =
-		kcalloc(BITS_TO_LONGS(num_channels), sizeof(unsigned long),
-			GFP_KERNEL);
+	chlist->allocated_channels = bitmap_zalloc(num_channels, GFP_KERNEL);
 	if (!chlist->allocated_channels) {
 		kfree(chlist->channels);
 		return -ENOMEM;
 	}
 
-	bitmap_zero(chlist->allocated_channels, num_channels);
-
 	return 0;
 }
 
 void host1x_channel_list_free(struct host1x_channel_list *chlist)
 {
-	kfree(chlist->allocated_channels);
+	bitmap_free(chlist->allocated_channels);
 	kfree(chlist->channels);
 }
 

drivers/gpu/host1x/context.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021, NVIDIA Corporation.
+ */
+
+#include <linux/device.h>
+#include <linux/kref.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/pid.h>
+#include <linux/slab.h>
+
+#include "context.h"
+#include "dev.h"
+
+int host1x_memory_context_list_init(struct host1x *host1x)
+{
+	struct host1x_memory_context_list *cdl = &host1x->context_list;
+	struct device_node *node = host1x->dev->of_node;
+	struct host1x_memory_context *ctx;
+	unsigned int i;
+	int err;
+
+	cdl->devs = NULL;
+	cdl->len = 0;
+	mutex_init(&cdl->lock);
+
+	err = of_property_count_u32_elems(node, "iommu-map");
+	if (err < 0)
+		return 0;
+
+	cdl->devs = kcalloc(err, sizeof(*cdl->devs), GFP_KERNEL);
+	if (!cdl->devs)
+		return -ENOMEM;
+	cdl->len = err / 4;
+
+	for (i = 0; i < cdl->len; i++) {
+		struct iommu_fwspec *fwspec;
+
+		ctx = &cdl->devs[i];
+
+		ctx->host = host1x;
+
+		device_initialize(&ctx->dev);
+
+		/*
+		 * Due to an issue with T194 NVENC, only 38 bits can be used.
+		 * Anyway, 256GiB of IOVA ought to be enough for anyone.
+		 */
+		ctx->dma_mask = DMA_BIT_MASK(38);
+		ctx->dev.dma_mask = &ctx->dma_mask;
+		ctx->dev.coherent_dma_mask = ctx->dma_mask;
+		dev_set_name(&ctx->dev, "host1x-ctx.%d", i);
+		ctx->dev.bus = &host1x_context_device_bus_type;
+		ctx->dev.parent = host1x->dev;
+
+		dma_set_max_seg_size(&ctx->dev, UINT_MAX);
+
+		err = device_add(&ctx->dev);
+		if (err) {
+			dev_err(host1x->dev, "could not add context device %d: %d\n", i, err);
+			goto del_devices;
+		}
+
+		err = of_dma_configure_id(&ctx->dev, node, true, &i);
+		if (err) {
+			dev_err(host1x->dev, "IOMMU configuration failed for context device %d: %d\n",
+				i, err);
+			device_del(&ctx->dev);
+			goto del_devices;
+		}
+
+		fwspec = dev_iommu_fwspec_get(&ctx->dev);
+		if (!fwspec || !device_iommu_mapped(&ctx->dev)) {
+			dev_err(host1x->dev, "Context device %d has no IOMMU!\n", i);
+			device_del(&ctx->dev);
+			goto del_devices;
+		}
+
+		ctx->stream_id = fwspec->ids[0] & 0xffff;
+	}
+
+	return 0;
+
+del_devices:
+	while (i--)
+		device_del(&cdl->devs[i].dev);
+
+	kfree(cdl->devs);
+	cdl->len = 0;
+
+	return err;
+}
+
+void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl)
+{
+	unsigned int i;
+
+	for (i = 0; i < cdl->len; i++)
+		device_del(&cdl->devs[i].dev);
+
+	kfree(cdl->devs);
+	cdl->len = 0;
+}
+
+struct host1x_memory_context *host1x_memory_context_alloc(struct host1x *host1x,
+							  struct pid *pid)
+{
+	struct host1x_memory_context_list *cdl = &host1x->context_list;
+	struct host1x_memory_context *free = NULL;
+	int i;
+
+	if (!cdl->len)
+		return ERR_PTR(-EOPNOTSUPP);
+
+	mutex_lock(&cdl->lock);
+
+	for (i = 0; i < cdl->len; i++) {
+		struct host1x_memory_context *cd = &cdl->devs[i];
+
+		if (cd->owner == pid) {
+			refcount_inc(&cd->ref);
+			mutex_unlock(&cdl->lock);
+			return cd;
+		} else if (!cd->owner && !free) {
+			free = cd;
+		}
+	}
+
+	if (!free) {
+		mutex_unlock(&cdl->lock);
+		return ERR_PTR(-EBUSY);
+	}
+
+	refcount_set(&free->ref, 1);
+	free->owner = get_pid(pid);
+
+	mutex_unlock(&cdl->lock);
+
+	return free;
+}
+EXPORT_SYMBOL_GPL(host1x_memory_context_alloc);
+
+void host1x_memory_context_get(struct host1x_memory_context *cd)
+{
+	refcount_inc(&cd->ref);
+}
+EXPORT_SYMBOL_GPL(host1x_memory_context_get);
+
+void host1x_memory_context_put(struct host1x_memory_context *cd)
+{
+	struct host1x_memory_context_list *cdl = &cd->host->context_list;
+
+	if (refcount_dec_and_mutex_lock(&cd->ref, &cdl->lock)) {
+		put_pid(cd->owner);
+		cd->owner = NULL;
+		mutex_unlock(&cdl->lock);
+	}
+}
+EXPORT_SYMBOL_GPL(host1x_memory_context_put);

drivers/gpu/host1x/context.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Host1x context devices
+ *
+ * Copyright (c) 2020, NVIDIA Corporation.
+ */
+
+#ifndef __HOST1X_CONTEXT_H
+#define __HOST1X_CONTEXT_H
+
+#include <linux/mutex.h>
+#include <linux/refcount.h>
+
+struct host1x;
+
+extern struct bus_type host1x_context_device_bus_type;
+
+struct host1x_memory_context_list {
+	struct mutex lock;
+	struct host1x_memory_context *devs;
+	unsigned int len;
+};
+
+#ifdef CONFIG_IOMMU_API
+int host1x_memory_context_list_init(struct host1x *host1x);
+void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl);
+#else
+static inline int host1x_memory_context_list_init(struct host1x *host1x)
+{
+	return 0;
+}
+
+static inline void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl)
+{
+}
+#endif
+
+#endif

drivers/gpu/host1x/context_bus.c

@@ -15,11 +15,6 @@ static int __init host1x_context_device_bus_init(void)
 {
 	int err;
 
-	if (!of_machine_is_compatible("nvidia,tegra186") &&
-	    !of_machine_is_compatible("nvidia,tegra194") &&
-	    !of_machine_is_compatible("nvidia,tegra234"))
-		return 0;
-
 	err = bus_register(&host1x_context_device_bus_type);
 	if (err < 0) {
 		pr_err("bus type registration failed: %d\n", err);

drivers/gpu/host1x/dev.c

@@ -28,6 +28,7 @@
 
 #include "bus.h"
 #include "channel.h"
+#include "context.h"
 #include "debug.h"
 #include "dev.h"
 #include "intr.h"
@@ -38,6 +39,12 @@
 #include "hw/host1x05.h"
 #include "hw/host1x06.h"
 #include "hw/host1x07.h"
+#include "hw/host1x08.h"
+
+void host1x_common_writel(struct host1x *host1x, u32 v, u32 r)
+{
+	writel(v, host1x->common_regs + r);
+}
 
 void host1x_hypervisor_writel(struct host1x *host1x, u32 v, u32 r)
 {
@@ -199,7 +206,48 @@ static const struct host1x_info host1x07_info = {
 	.reserve_vblank_syncpts = false,
 };
 
+/*
+ * Tegra234 has two stream ID protection tables, one for setting stream IDs
+ * through the channel path via SETSTREAMID, and one for setting them via
+ * MMIO. We program each engine's data stream ID in the channel path table
+ * and firmware stream ID in the MMIO path table.
+ */
+static const struct host1x_sid_entry tegra234_sid_table[] = {
+	{
+		/* VIC channel */
+		.base = 0x17b8,
+		.offset = 0x30,
+		.limit = 0x30
+	},
+	{
+		/* VIC MMIO */
+		.base = 0x1688,
+		.offset = 0x34,
+		.limit = 0x34
+	},
+};
+
+static const struct host1x_info host1x08_info = {
+	.nb_channels = 63,
+	.nb_pts = 1024,
+	.nb_mlocks = 24,
+	.nb_bases = 0,
+	.init = host1x08_init,
+	.sync_offset = 0x0,
+	.dma_mask = DMA_BIT_MASK(40),
+	.has_wide_gather = true,
+	.has_hypervisor = true,
+	.has_common = true,
+	.num_sid_entries = ARRAY_SIZE(tegra234_sid_table),
+	.sid_table = tegra234_sid_table,
+	.streamid_vm_table = { 0x1004, 128 },
+	.classid_vm_table = { 0x1404, 25 },
+	.mmio_vm_table = { 0x1504, 25 },
+	.reserve_vblank_syncpts = false,
+};
+
 static const struct of_device_id host1x_of_match[] = {
+	{ .compatible = "nvidia,tegra234-host1x", .data = &host1x08_info, },
 	{ .compatible = "nvidia,tegra194-host1x", .data = &host1x07_info, },
 	{ .compatible = "nvidia,tegra186-host1x", .data = &host1x06_info, },
 	{ .compatible = "nvidia,tegra210-host1x", .data = &host1x05_info, },
@@ -211,7 +259,7 @@ static const struct of_device_id host1x_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, host1x_of_match);
 
-static void host1x_setup_sid_table(struct host1x *host)
+static void host1x_setup_virtualization_tables(struct host1x *host)
 {
 	const struct host1x_info *info = host->info;
 	unsigned int i;
@@ -225,6 +273,21 @@ static void host1x_setup_sid_table(struct host1x *host)
 		host1x_hypervisor_writel(host, entry->offset, entry->base);
 		host1x_hypervisor_writel(host, entry->limit, entry->base + 4);
 	}
+
+	for (i = 0; i < info->streamid_vm_table.count; i++) {
+		/* Allow access to all stream IDs to all VMs. */
+		host1x_hypervisor_writel(host, 0xff, info->streamid_vm_table.base + 4 * i);
+	}
+
+	for (i = 0; i < info->classid_vm_table.count; i++) {
+		/* Allow access to all classes to all VMs. */
+		host1x_hypervisor_writel(host, 0xff, info->classid_vm_table.base + 4 * i);
+	}
+
+	for (i = 0; i < info->mmio_vm_table.count; i++) {
+		/* Use VM1 (that's us) as originator VMID for engine MMIO accesses. */
+		host1x_hypervisor_writel(host, 0x1, info->mmio_vm_table.base + 4 * i);
+	}
 }
 
 static bool host1x_wants_iommu(struct host1x *host1x)
@@ -402,16 +465,12 @@ static int host1x_get_resets(struct host1x *host)
 		return err;
 	}
 
-	if (WARN_ON(!host->resets[1].rstc))
-		return -ENOENT;
-
 	return 0;
 }
 
 static int host1x_probe(struct platform_device *pdev)
 {
 	struct host1x *host;
-	struct resource *regs, *hv_regs = NULL;
 	int syncpt_irq;
 	int err;
 
@@ -422,25 +481,23 @@ static int host1x_probe(struct platform_device *pdev)
 	host->info = of_device_get_match_data(&pdev->dev);
 
 	if (host->info->has_hypervisor) {
-		regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vm");
-		if (!regs) {
-			dev_err(&pdev->dev, "failed to get vm registers\n");
-			return -ENXIO;
-		}
+		host->regs = devm_platform_ioremap_resource_byname(pdev, "vm");
+		if (IS_ERR(host->regs))
+			return PTR_ERR(host->regs);
 
-		hv_regs = platform_get_resource_byname(pdev, IORESOURCE_MEM,
-						       "hypervisor");
-		if (!hv_regs) {
-			dev_err(&pdev->dev,
-				"failed to get hypervisor registers\n");
-			return -ENXIO;
+		host->hv_regs = devm_platform_ioremap_resource_byname(pdev, "hypervisor");
+		if (IS_ERR(host->hv_regs))
+			return PTR_ERR(host->hv_regs);
+
+		if (host->info->has_common) {
+			host->common_regs = devm_platform_ioremap_resource_byname(pdev, "common");
+			if (IS_ERR(host->common_regs))
+				return PTR_ERR(host->common_regs);
 		}
 	} else {
-		regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		if (!regs) {
-			dev_err(&pdev->dev, "failed to get registers\n");
-			return -ENXIO;
-		}
+		host->regs = devm_platform_ioremap_resource(pdev, 0);
+		if (IS_ERR(host->regs))
+			return PTR_ERR(host->regs);
 	}
 
 	syncpt_irq = platform_get_irq(pdev, 0);
@@ -455,16 +512,6 @@ static int host1x_probe(struct platform_device *pdev)
 	/* set common host1x device data */
 	platform_set_drvdata(pdev, host);
 
-	host->regs = devm_ioremap_resource(&pdev->dev, regs);
-	if (IS_ERR(host->regs))
-		return PTR_ERR(host->regs);
-
-	if (host->info->has_hypervisor) {
-		host->hv_regs = devm_ioremap_resource(&pdev->dev, hv_regs);
-		if (IS_ERR(host->hv_regs))
-			return PTR_ERR(host->hv_regs);
-	}
-
 	host->dev->dma_parms = &host->dma_parms;
 	dma_set_max_seg_size(host->dev, UINT_MAX);
 
@@ -503,10 +550,16 @@ static int host1x_probe(struct platform_device *pdev)
 		goto iommu_exit;
 	}
 
+	err = host1x_memory_context_list_init(host);
+	if (err) {
+		dev_err(&pdev->dev, "failed to initialize context list\n");
+		goto free_channels;
+	}
+
 	err = host1x_syncpt_init(host);
 	if (err) {
 		dev_err(&pdev->dev, "failed to initialize syncpts\n");
-		goto free_channels;
+		goto free_contexts;
 	}
 
 	err = host1x_intr_init(host, syncpt_irq);
@@ -550,6 +603,8 @@ static int host1x_probe(struct platform_device *pdev)
 	host1x_intr_deinit(host);
 deinit_syncpt:
 	host1x_syncpt_deinit(host);
+free_contexts:
+	host1x_memory_context_list_free(&host->context_list);
 free_channels:
 	host1x_channel_list_free(&host->channel_list);
 iommu_exit:
@@ -571,6 +626,7 @@ static int host1x_remove(struct platform_device *pdev)
 
 	host1x_intr_deinit(host);
 	host1x_syncpt_deinit(host);
+	host1x_memory_context_list_free(&host->context_list);
 	host1x_channel_list_free(&host->channel_list);
 	host1x_iommu_exit(host);
 	host1x_bo_cache_destroy(&host->cache);
@@ -600,7 +656,7 @@ static int __maybe_unused host1x_runtime_suspend(struct device *dev)
 	return 0;
 
 resume_host1x:
-	host1x_setup_sid_table(host);
+	host1x_setup_virtualization_tables(host);
 	host1x_syncpt_restore(host);
 	host1x_intr_start(host);
 
@@ -630,7 +686,7 @@ static int __maybe_unused host1x_runtime_resume(struct device *dev)
 		goto disable_clk;
 	}
 
-	host1x_setup_sid_table(host);
+	host1x_setup_virtualization_tables(host);
 	host1x_syncpt_restore(host);
 	host1x_intr_start(host);
 

drivers/gpu/host1x/dev.h

@@ -14,6 +14,7 @@
 
 #include "cdma.h"
 #include "channel.h"
+#include "context.h"
 #include "intr.h"
 #include "job.h"
 #include "syncpt.h"
@@ -89,6 +90,11 @@ struct host1x_sid_entry {
 	unsigned int limit;
 };
 
+struct host1x_table_desc {
+	unsigned int base;
+	unsigned int count;
+};
+
 struct host1x_info {
 	unsigned int nb_channels; /* host1x: number of channels supported */
 	unsigned int nb_pts; /* host1x: number of syncpoints supported */
@@ -99,8 +105,12 @@ struct host1x_info {
 	u64 dma_mask; /* mask of addressable memory */
 	bool has_wide_gather; /* supports GATHER_W opcode */
 	bool has_hypervisor; /* has hypervisor registers */
+	bool has_common; /* has common registers separate from hypervisor */
 	unsigned int num_sid_entries;
 	const struct host1x_sid_entry *sid_table;
+	struct host1x_table_desc streamid_vm_table;
+	struct host1x_table_desc classid_vm_table;
+	struct host1x_table_desc mmio_vm_table;
 	/*
 	 * On T20-T148, the boot chain may setup DC to increment syncpoints
 	 * 26/27 on VBLANK. As such we cannot use these syncpoints until
@@ -114,6 +124,7 @@ struct host1x {
 
 	void __iomem *regs;
 	void __iomem *hv_regs; /* hypervisor region */
+	void __iomem *common_regs;
 	struct host1x_syncpt *syncpt;
 	struct host1x_syncpt_base *bases;
 	struct device *dev;
@@ -141,6 +152,7 @@ struct host1x {
 	struct mutex syncpt_mutex;
 
 	struct host1x_channel_list channel_list;
+	struct host1x_memory_context_list context_list;
 
 	struct dentry *debugfs;
 
@@ -154,6 +166,7 @@ struct host1x {
 	struct host1x_bo_cache cache;
 };
 
+void host1x_common_writel(struct host1x *host1x, u32 v, u32 r);
 void host1x_hypervisor_writel(struct host1x *host1x, u32 r, u32 v);
 u32 host1x_hypervisor_readl(struct host1x *host1x, u32 r);
 void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);

drivers/gpu/host1x/hw/cdma_hw.c

@@ -238,6 +238,37 @@ static void cdma_resume(struct host1x_cdma *cdma, u32 getptr)
 	cdma_timeout_restart(cdma, getptr);
 }
 
+static void timeout_release_mlock(struct host1x_cdma *cdma)
+{
+#if HOST1X_HW >= 8
+	/* Tegra186 and Tegra194 require a more complicated MLOCK release
+	 * sequence. Furthermore, those chips by default don't enforce MLOCKs,
+	 * so it turns out that if we don't /actually/ need MLOCKs, we can just
+	 * ignore them.
+	 *
+	 * As such, for now just implement this on Tegra234 where things are
+	 * stricter but also easy to implement.
+	 */
+	struct host1x_channel *ch = cdma_to_channel(cdma);
+	struct host1x *host1x = cdma_to_host1x(cdma);
+	u32 offset;
+
+	switch (ch->client->class) {
+	case HOST1X_CLASS_VIC:
+		offset = HOST1X_COMMON_VIC_MLOCK;
+		break;
+	case HOST1X_CLASS_NVDEC:
+		offset = HOST1X_COMMON_NVDEC_MLOCK;
+		break;
+	default:
+		WARN(1, "%s was not updated for class %u", __func__, ch->client->class);
+		return;
+	}
+
+	host1x_common_writel(host1x, 0x0, offset);
+#endif
+}
+
 /*
  * If this timeout fires, it indicates the current sync_queue entry has
  * exceeded its TTL and the userctx should be timed out and remaining
@@ -288,6 +319,9 @@ static void cdma_timeout_handler(struct work_struct *work)
 	/* stop HW, resetting channel/module */
 	host1x_hw_cdma_freeze(host1x, cdma);
 
+	/* release any held MLOCK */
+	timeout_release_mlock(cdma);
+
 	host1x_cdma_update_sync_queue(cdma, ch->dev);
 	mutex_unlock(&cdma->lock);
 }

drivers/gpu/host1x/hw/channel_hw.c

@@ -47,10 +47,41 @@ static void trace_write_gather(struct host1x_cdma *cdma, struct host1x_bo *bo,
 	}
 }
 
-static void submit_wait(struct host1x_cdma *cdma, u32 id, u32 threshold,
+static void submit_wait(struct host1x_job *job, u32 id, u32 threshold,
 			u32 next_class)
 {
-#if HOST1X_HW >= 2
+	struct host1x_cdma *cdma = &job->channel->cdma;
+
+#if HOST1X_HW >= 6
+	u32 stream_id;
+
+	/*
+	 * If a memory context has been set, use it. Otherwise
+	 * (if context isolation is disabled) use the engine's
+	 * firmware stream ID.
+	 */
+	if (job->memory_context)
+		stream_id = job->memory_context->stream_id;
+	else
+		stream_id = job->engine_fallback_streamid;
+
+	host1x_cdma_push_wide(cdma,
+		host1x_opcode_setclass(
+			HOST1X_CLASS_HOST1X,
+			HOST1X_UCLASS_LOAD_SYNCPT_PAYLOAD_32,
+			/* WAIT_SYNCPT_32 is at SYNCPT_PAYLOAD_32+2 */
+			BIT(0) | BIT(2)
+		),
+		threshold,
+		id,
+		HOST1X_OPCODE_NOP
+	);
+	host1x_cdma_push_wide(&job->channel->cdma,
+		host1x_opcode_setclass(job->class, 0, 0),
+		host1x_opcode_setpayload(stream_id),
+		host1x_opcode_setstreamid(job->engine_streamid_offset / 4),
+		HOST1X_OPCODE_NOP);
+#elif HOST1X_HW >= 2
 	host1x_cdma_push_wide(cdma,
 		host1x_opcode_setclass(
 			HOST1X_CLASS_HOST1X,
@@ -97,7 +128,7 @@ static void submit_gathers(struct host1x_job *job, u32 job_syncpt_base)
 			else
 				threshold = cmd->wait.threshold;
 
-			submit_wait(cdma, cmd->wait.id, threshold, cmd->wait.next_class);
+			submit_wait(job, cmd->wait.id, threshold, cmd->wait.next_class);
 		} else {
 			struct host1x_job_gather *g = &cmd->gather;
 
@@ -180,11 +211,77 @@ static void host1x_enable_gather_filter(struct host1x_channel *ch)
 #endif
 }
 
+static void channel_program_cdma(struct host1x_job *job)
+{
+	struct host1x_cdma *cdma = &job->channel->cdma;
+	struct host1x_syncpt *sp = job->syncpt;
+
+#if HOST1X_HW >= 6
+	u32 fence;
+
+	/* Enter engine class with invalid stream ID. */
+	host1x_cdma_push_wide(cdma,
+		host1x_opcode_acquire_mlock(job->class),
+		host1x_opcode_setclass(job->class, 0, 0),
+		host1x_opcode_setpayload(0),
+		host1x_opcode_setstreamid(job->engine_streamid_offset / 4));
+
+	/* Before switching stream ID to real stream ID, ensure engine is idle. */
+	fence = host1x_syncpt_incr_max(sp, 1);
+	host1x_cdma_push(&job->channel->cdma,
+		host1x_opcode_nonincr(HOST1X_UCLASS_INCR_SYNCPT, 1),
+		HOST1X_UCLASS_INCR_SYNCPT_INDX_F(job->syncpt->id) |
+			HOST1X_UCLASS_INCR_SYNCPT_COND_F(4));
+	submit_wait(job, job->syncpt->id, fence, job->class);
+
+	/* Submit work. */
+	job->syncpt_end = host1x_syncpt_incr_max(sp, job->syncpt_incrs);
+	submit_gathers(job, job->syncpt_end - job->syncpt_incrs);
+
+	/* Before releasing MLOCK, ensure engine is idle again. */
+	fence = host1x_syncpt_incr_max(sp, 1);
+	host1x_cdma_push(&job->channel->cdma,
+		host1x_opcode_nonincr(HOST1X_UCLASS_INCR_SYNCPT, 1),
+		HOST1X_UCLASS_INCR_SYNCPT_INDX_F(job->syncpt->id) |
+			HOST1X_UCLASS_INCR_SYNCPT_COND_F(4));
+	submit_wait(job, job->syncpt->id, fence, job->class);
+
+	/* Release MLOCK. */
+	host1x_cdma_push(cdma,
+		HOST1X_OPCODE_NOP, host1x_opcode_release_mlock(job->class));
+#else
+	if (job->serialize) {
+		/*
+		 * Force serialization by inserting a host wait for the
+		 * previous job to finish before this one can commence.
+		 */
+		host1x_cdma_push(cdma,
+				 host1x_opcode_setclass(HOST1X_CLASS_HOST1X,
+					host1x_uclass_wait_syncpt_r(), 1),
+				 host1x_class_host_wait_syncpt(job->syncpt->id,
+					host1x_syncpt_read_max(sp)));
+	}
+
+	/* Synchronize base register to allow using it for relative waiting */
+	if (sp->base)
+		synchronize_syncpt_base(job);
+
+	/* add a setclass for modules that require it */
+	if (job->class)
+		host1x_cdma_push(cdma,
+				 host1x_opcode_setclass(job->class, 0, 0),
+				 HOST1X_OPCODE_NOP);
+
+	job->syncpt_end = host1x_syncpt_incr_max(sp, job->syncpt_incrs);
+
+	submit_gathers(job, job->syncpt_end - job->syncpt_incrs);
+#endif
+}
+
 static int channel_submit(struct host1x_job *job)
 {
 	struct host1x_channel *ch = job->channel;
 	struct host1x_syncpt *sp = job->syncpt;
-	u32 user_syncpt_incrs = job->syncpt_incrs;
 	u32 prev_max = 0;
 	u32 syncval;
 	int err;
@@ -212,6 +309,7 @@ static int channel_submit(struct host1x_job *job)
 
 	host1x_channel_set_streamid(ch);
 	host1x_enable_gather_filter(ch);
+	host1x_hw_syncpt_assign_to_channel(host, sp, ch);
 
 	/* begin a CDMA submit */
 	err = host1x_cdma_begin(&ch->cdma, job);
@@ -220,35 +318,8 @@ static int channel_submit(struct host1x_job *job)
 		goto error;
 	}
 
-	if (job->serialize) {
-		/*
-		 * Force serialization by inserting a host wait for the
-		 * previous job to finish before this one can commence.
-		 */
-		host1x_cdma_push(&ch->cdma,
-				 host1x_opcode_setclass(HOST1X_CLASS_HOST1X,
-					host1x_uclass_wait_syncpt_r(), 1),
-				 host1x_class_host_wait_syncpt(job->syncpt->id,
-					host1x_syncpt_read_max(sp)));
-	}
-
-	/* Synchronize base register to allow using it for relative waiting */
-	if (sp->base)
-		synchronize_syncpt_base(job);
-
-	syncval = host1x_syncpt_incr_max(sp, user_syncpt_incrs);
-
-	host1x_hw_syncpt_assign_to_channel(host, sp, ch);
-
-	job->syncpt_end = syncval;
-
-	/* add a setclass for modules that require it */
-	if (job->class)
-		host1x_cdma_push(&ch->cdma,
-				 host1x_opcode_setclass(job->class, 0, 0),
-				 HOST1X_OPCODE_NOP);
-
-	submit_gathers(job, syncval - user_syncpt_incrs);
+	channel_program_cdma(job);
+	syncval = host1x_syncpt_read_max(sp);
 
 	/* end CDMA submit & stash pinned hMems into sync queue */
 	host1x_cdma_end(&ch->cdma, job);

drivers/gpu/host1x/hw/host1x01_hardware.h

@@ -15,118 +15,6 @@
 #include "hw_host1x01_sync.h"
 #include "hw_host1x01_uclass.h"
 
-static inline u32 host1x_class_host_wait_syncpt(
-	unsigned indx, unsigned threshold)
-{
-	return host1x_uclass_wait_syncpt_indx_f(indx)
-		| host1x_uclass_wait_syncpt_thresh_f(threshold);
-}
-
-static inline u32 host1x_class_host_load_syncpt_base(
-	unsigned indx, unsigned threshold)
-{
-	return host1x_uclass_load_syncpt_base_base_indx_f(indx)
-		| host1x_uclass_load_syncpt_base_value_f(threshold);
-}
-
-static inline u32 host1x_class_host_wait_syncpt_base(
-	unsigned indx, unsigned base_indx, unsigned offset)
-{
-	return host1x_uclass_wait_syncpt_base_indx_f(indx)
-		| host1x_uclass_wait_syncpt_base_base_indx_f(base_indx)
-		| host1x_uclass_wait_syncpt_base_offset_f(offset);
-}
-
-static inline u32 host1x_class_host_incr_syncpt_base(
-	unsigned base_indx, unsigned offset)
-{
-	return host1x_uclass_incr_syncpt_base_base_indx_f(base_indx)
-		| host1x_uclass_incr_syncpt_base_offset_f(offset);
-}
-
-static inline u32 host1x_class_host_incr_syncpt(
-	unsigned cond, unsigned indx)
-{
-	return host1x_uclass_incr_syncpt_cond_f(cond)
-		| host1x_uclass_incr_syncpt_indx_f(indx);
-}
-
-static inline u32 host1x_class_host_indoff_reg_write(
-	unsigned mod_id, unsigned offset, bool auto_inc)
-{
-	u32 v = host1x_uclass_indoff_indbe_f(0xf)
-		| host1x_uclass_indoff_indmodid_f(mod_id)
-		| host1x_uclass_indoff_indroffset_f(offset);
-	if (auto_inc)
-		v |= host1x_uclass_indoff_autoinc_f(1);
-	return v;
-}
-
-static inline u32 host1x_class_host_indoff_reg_read(
-	unsigned mod_id, unsigned offset, bool auto_inc)
-{
-	u32 v = host1x_uclass_indoff_indmodid_f(mod_id)
-		| host1x_uclass_indoff_indroffset_f(offset)
-		| host1x_uclass_indoff_rwn_read_v();
-	if (auto_inc)
-		v |= host1x_uclass_indoff_autoinc_f(1);
-	return v;
-}
-
-
-/* cdma opcodes */
-static inline u32 host1x_opcode_setclass(
-	unsigned class_id, unsigned offset, unsigned mask)
-{
-	return (0 << 28) | (offset << 16) | (class_id << 6) | mask;
-}
-
-static inline u32 host1x_opcode_incr(unsigned offset, unsigned count)
-{
-	return (1 << 28) | (offset << 16) | count;
-}
-
-static inline u32 host1x_opcode_nonincr(unsigned offset, unsigned count)
-{
-	return (2 << 28) | (offset << 16) | count;
-}
-
-static inline u32 host1x_opcode_mask(unsigned offset, unsigned mask)
-{
-	return (3 << 28) | (offset << 16) | mask;
-}
-
-static inline u32 host1x_opcode_imm(unsigned offset, unsigned value)
-{
-	return (4 << 28) | (offset << 16) | value;
-}
-
-static inline u32 host1x_opcode_imm_incr_syncpt(unsigned cond, unsigned indx)
-{
-	return host1x_opcode_imm(host1x_uclass_incr_syncpt_r(),
-		host1x_class_host_incr_syncpt(cond, indx));
-}
-
-static inline u32 host1x_opcode_restart(unsigned address)
-{
-	return (5 << 28) | (address >> 4);
-}
-
-static inline u32 host1x_opcode_gather(unsigned count)
-{
-	return (6 << 28) | count;
-}
-
-static inline u32 host1x_opcode_gather_nonincr(unsigned offset,	unsigned count)
-{
-	return (6 << 28) | (offset << 16) | BIT(15) | count;
-}
-
-static inline u32 host1x_opcode_gather_incr(unsigned offset, unsigned count)
-{
-	return (6 << 28) | (offset << 16) | BIT(15) | BIT(14) | count;
-}
-
-#define HOST1X_OPCODE_NOP host1x_opcode_nonincr(0, 0)
+#include "opcodes.h"
 
 #endif

drivers/gpu/host1x/hw/host1x02_hardware.h

@@ -15,117 +15,6 @@
 #include "hw_host1x02_sync.h"
 #include "hw_host1x02_uclass.h"
 
-static inline u32 host1x_class_host_wait_syncpt(
-	unsigned indx, unsigned threshold)
-{
-	return host1x_uclass_wait_syncpt_indx_f(indx)
-		| host1x_uclass_wait_syncpt_thresh_f(threshold);
-}
-
-static inline u32 host1x_class_host_load_syncpt_base(
-	unsigned indx, unsigned threshold)
-{
-	return host1x_uclass_load_syncpt_base_base_indx_f(indx)
-		| host1x_uclass_load_syncpt_base_value_f(threshold);
-}
-
-static inline u32 host1x_class_host_wait_syncpt_base(
-	unsigned indx, unsigned base_indx, unsigned offset)
-{
-	return host1x_uclass_wait_syncpt_base_indx_f(indx)
-		| host1x_uclass_wait_syncpt_base_base_indx_f(base_indx)
-		| host1x_uclass_wait_syncpt_base_offset_f(offset);
-}
-
-static inline u32 host1x_class_host_incr_syncpt_base(
-	unsigned base_indx, unsigned offset)
-{
-	return host1x_uclass_incr_syncpt_base_base_indx_f(base_indx)
-		| host1x_uclass_incr_syncpt_base_offset_f(offset);
-}
-
-static inline u32 host1x_class_host_incr_syncpt(
-	unsigned cond, unsigned indx)
-{
-	return host1x_uclass_incr_syncpt_cond_f(cond)
-		| host1x_uclass_incr_syncpt_indx_f(indx);
-}
-
-static inline u32 host1x_class_host_indoff_reg_write(
-	unsigned mod_id, unsigned offset, bool auto_inc)
-{
-	u32 v = host1x_uclass_indoff_indbe_f(0xf)
-		| host1x_uclass_indoff_indmodid_f(mod_id)
-		| host1x_uclass_indoff_indroffset_f(offset);
-	if (auto_inc)
-		v |= host1x_uclass_indoff_autoinc_f(1);
-	return v;
-}
-
-static inline u32 host1x_class_host_indoff_reg_read(
-	unsigned mod_id, unsigned offset, bool auto_inc)
-{
-	u32 v = host1x_uclass_indoff_indmodid_f(mod_id)
-		| host1x_uclass_indoff_indroffset_f(offset)
-		| host1x_uclass_indoff_rwn_read_v();
-	if (auto_inc)
-		v |= host1x_uclass_indoff_autoinc_f(1);
-	return v;
-}
-
-/* cdma opcodes */
-static inline u32 host1x_opcode_setclass(
-	unsigned class_id, unsigned offset, unsigned mask)
-{
-	return (0 << 28) | (offset << 16) | (class_id << 6) | mask;
-}
-
-static inline u32 host1x_opcode_incr(unsigned offset, unsigned count)
-{
-	return (1 << 28) | (offset << 16) | count;
-}
-
-static inline u32 host1x_opcode_nonincr(unsigned offset, unsigned count)
-{
-	return (2 << 28) | (offset << 16) | count;
-}
-
-static inline u32 host1x_opcode_mask(unsigned offset, unsigned mask)
-{
-	return (3 << 28) | (offset << 16) | mask;
-}
-
-static inline u32 host1x_opcode_imm(unsigned offset, unsigned value)
-{
-	return (4 << 28) | (offset << 16) | value;
-}
-
-static inline u32 host1x_opcode_imm_incr_syncpt(unsigned cond, unsigned indx)
-{
-	return host1x_opcode_imm(host1x_uclass_incr_syncpt_r(),
-		host1x_class_host_incr_syncpt(cond, indx));
-}
-
-static inline u32 host1x_opcode_restart(unsigned address)
-{
-	return (5 << 28) | (address >> 4);
-}
-
-static inline u32 host1x_opcode_gather(unsigned count)
-{
-	return (6 << 28) | count;
-}
-
-static inline u32 host1x_opcode_gather_nonincr(unsigned offset,	unsigned count)
-{
-	return (6 << 28) | (offset << 16) | BIT(15) | count;
-}
-
-static inline u32 host1x_opcode_gather_incr(unsigned offset, unsigned count)
-{
-	return (6 << 28) | (offset << 16) | BIT(15) | BIT(14) | count;
-}
-
-#define HOST1X_OPCODE_NOP host1x_opcode_nonincr(0, 0)
+#include "opcodes.h"
 
 #endif

drivers/gpu/host1x/hw/host1x08.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Host1x init for Tegra234 SoCs
+ *
+ * Copyright (c) 2022 NVIDIA Corporation.
+ */
+
+/* include hw specification */
+#include "host1x08.h"
+#include "host1x08_hardware.h"
+
+/* include code */
+#define HOST1X_HW 8
+
+#include "cdma_hw.c"
+#include "channel_hw.c"
+#include "debug_hw.c"
+#include "intr_hw.c"
+#include "syncpt_hw.c"
+
+#include "../dev.h"
+
+int host1x08_init(struct host1x *host)
+{
+	host->channel_op = &host1x_channel_ops;
+	host->cdma_op = &host1x_cdma_ops;
+	host->cdma_pb_op = &host1x_pushbuffer_ops;
+	host->syncpt_op = &host1x_syncpt_ops;
+	host->intr_op = &host1x_intr_ops;
+	host->debug_op = &host1x_debug_ops;
+
+	return 0;
+}

drivers/gpu/host1x/hw/host1x08.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Host1x init for Tegra234 SoCs
+ *
+ * Copyright (c) 2018 NVIDIA Corporation.
+ */
+
+#ifndef HOST1X_HOST1X08_H
+#define HOST1X_HOST1X08_H
+
+struct host1x;
+
+int host1x08_init(struct host1x *host);
+
+#endif

drivers/gpu/host1x/hw/host1x08_hardware.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Tegra host1x Register Offsets for Tegra234
+ *
+ * Copyright (c) 2022 NVIDIA Corporation.
+ */
+
+#ifndef __HOST1X_HOST1X08_HARDWARE_H
+#define __HOST1X_HOST1X08_HARDWARE_H
+
+#include <linux/types.h>
+#include <linux/bitops.h>
+
+#include "hw_host1x08_uclass.h"
+#include "hw_host1x08_vm.h"
+#include "hw_host1x08_hypervisor.h"
+#include "hw_host1x08_common.h"
+
+#include "opcodes.h"
+
+#endif

drivers/gpu/host1x/hw/hw_host1x08_channel.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2022 NVIDIA Corporation.
+ */
+
+#ifndef HOST1X_HW_HOST1X08_CHANNEL_H
+#define HOST1X_HW_HOST1X08_CHANNEL_H
+
+#define HOST1X_CHANNEL_SMMU_STREAMID 0x084
+
+#endif

drivers/gpu/host1x/hw/hw_host1x08_common.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2022 NVIDIA Corporation.
+ */
+
+#define HOST1X_COMMON_OFA_MLOCK			0x4050
+#define HOST1X_COMMON_NVJPG1_MLOCK		0x4070
+#define HOST1X_COMMON_VIC_MLOCK			0x4078
+#define HOST1X_COMMON_NVENC_MLOCK		0x407c
+#define HOST1X_COMMON_NVDEC_MLOCK		0x4080
+#define HOST1X_COMMON_NVJPG_MLOCK		0x4084