dt-bindings: pinctrl: fsl,imx6ul-pinctrl: convert to YAML

Convert i.MX6UL pinctrl bindings to YAML.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://lore.kernel.org/r/20240226212740.2019837-2-sre@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pinctrl/fsl,imx6ul-pinctrl.txt

-* Freescale i.MX6 UltraLite IOMUX Controller
-
-Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
-and usage.
-
-Required properties:
-- compatible: "fsl,imx6ul-iomuxc" for main IOMUX controller or
-  "fsl,imx6ull-iomuxc-snvs" for i.MX 6ULL's SNVS IOMUX controller.
-- fsl,pins: each entry consists of 6 integers and represents the mux and config
-  setting for one pin.  The first 5 integers <mux_reg conf_reg input_reg mux_val
-  input_val> are specified using a PIN_FUNC_ID macro, which can be found in
-  imx6ul-pinfunc.h under device tree source folder.  The last integer CONFIG is
-  the pad setting value like pull-up on this pin.  Please refer to i.MX6 UltraLite
-  Reference Manual for detailed CONFIG settings.
-
-CONFIG bits definition:
-PAD_CTL_HYS                     (1 << 16)
-PAD_CTL_PUS_100K_DOWN           (0 << 14)
-PAD_CTL_PUS_47K_UP              (1 << 14)
-PAD_CTL_PUS_100K_UP             (2 << 14)
-PAD_CTL_PUS_22K_UP              (3 << 14)
-PAD_CTL_PUE                     (1 << 13)
-PAD_CTL_PKE                     (1 << 12)
-PAD_CTL_ODE                     (1 << 11)
-PAD_CTL_SPEED_LOW               (0 << 6)
-PAD_CTL_SPEED_MED               (1 << 6)
-PAD_CTL_SPEED_HIGH              (3 << 6)
-PAD_CTL_DSE_DISABLE             (0 << 3)
-PAD_CTL_DSE_260ohm              (1 << 3)
-PAD_CTL_DSE_130ohm              (2 << 3)
-PAD_CTL_DSE_87ohm               (3 << 3)
-PAD_CTL_DSE_65ohm               (4 << 3)
-PAD_CTL_DSE_52ohm               (5 << 3)
-PAD_CTL_DSE_43ohm               (6 << 3)
-PAD_CTL_DSE_37ohm               (7 << 3)
-PAD_CTL_SRE_FAST                (1 << 0)
-PAD_CTL_SRE_SLOW                (0 << 0)

Documentation/devicetree/bindings/pinctrl/fsl,imx6ul-pinctrl.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/fsl,imx6ul-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale IMX6UL IOMUX Controller
+
+maintainers:
+  - Dong Aisheng <aisheng.dong@nxp.com>
+
+description:
+  Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
+  for common binding part and usage.
+
+allOf:
+  - $ref: pinctrl.yaml#
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx6ul-iomuxc
+      - fsl,imx6ull-iomuxc-snvs
+
+  reg:
+    maxItems: 1
+
+# Client device subnode's properties
+patternProperties:
+  'grp$':
+    type: object
+    description:
+      Pinctrl node's client devices use subnodes for desired pin configuration.
+      Client device subnodes use below standard properties.
+
+    properties:
+      fsl,pins:
+        description:
+          each entry consists of 6 integers and represents the mux and config
+          setting for one pin. The first 5 integers <mux_reg conf_reg input_reg
+          mux_val input_val> are specified using a PIN_FUNC_ID macro, which can
+          be found in <arch/arm/boot/dts/imx6ul-pinfunc.h>. The last integer
+          CONFIG is the pad setting value like pull-up on this pin. Please
+          refer to i.MX6UL Reference Manual for detailed CONFIG settings.
+        $ref: /schemas/types.yaml#/definitions/uint32-matrix
+        items:
+          items:
+            - description: |
+                "mux_reg" indicates the offset of mux register.
+            - description: |
+                "conf_reg" indicates the offset of pad configuration register.
+            - description: |
+                "input_reg" indicates the offset of select input register.
+            - description: |
+                "mux_val" indicates the mux value to be applied.
+            - description: |
+                "input_val" indicates the select input value to be applied.
+            - description: |
+                "pad_setting" indicates the pad configuration value to be applied:
+                  PAD_CTL_HYS                     (1 << 16)
+                  PAD_CTL_PUS_100K_DOWN           (0 << 14)
+                  PAD_CTL_PUS_47K_UP              (1 << 14)
+                  PAD_CTL_PUS_100K_UP             (2 << 14)
+                  PAD_CTL_PUS_22K_UP              (3 << 14)
+                  PAD_CTL_PUE                     (1 << 13)
+                  PAD_CTL_PKE                     (1 << 12)
+                  PAD_CTL_ODE                     (1 << 11)
+                  PAD_CTL_SPEED_LOW               (0 << 6)
+                  PAD_CTL_SPEED_MED               (1 << 6)
+                  PAD_CTL_SPEED_HIGH              (3 << 6)
+                  PAD_CTL_DSE_DISABLE             (0 << 3)
+                  PAD_CTL_DSE_260ohm              (1 << 3)
+                  PAD_CTL_DSE_130ohm              (2 << 3)
+                  PAD_CTL_DSE_87ohm               (3 << 3)
+                  PAD_CTL_DSE_65ohm               (4 << 3)
+                  PAD_CTL_DSE_52ohm               (5 << 3)
+                  PAD_CTL_DSE_43ohm               (6 << 3)
+                  PAD_CTL_DSE_37ohm               (7 << 3)
+                  PAD_CTL_SRE_FAST                (1 << 0)
+                  PAD_CTL_SRE_SLOW                (0 << 0)
+
+    required:
+      - fsl,pins
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    iomuxc: pinctrl@20e0000 {
+      compatible = "fsl,imx6ul-iomuxc";
+      reg = <0x020e0000 0x4000>;
+
+      mux_uart: uartgrp {
+        fsl,pins = <
+          0x0084 0x0310 0x0000 0 0 0x1b0b1
+          0x0088 0x0314 0x0624 0 3 0x1b0b1
+        >;
+      };
+    };
+  - |
+    iomuxc_snvs: pinctrl@2290000 {
+      compatible = "fsl,imx6ull-iomuxc-snvs";
+      reg = <0x02290000 0x4000>;
+
+      pinctrl_snvs_usbc_det: snvsusbcdetgrp {
+        fsl,pins = <
+          0x0010 0x0054 0x0000 0x5 0x0 0x130b0
+        >;
+      };
+    };