Merge series "Add I2S-MCC support for Microchip's SAMA7G5" from Codrin...

Merge series "Add I2S-MCC support for Microchip's SAMA7G5" from Codrin Ciubotariu <codrin.ciubotariu@microchip.com>:

SAMA7G5 includes an updated version of I2S-MCC, found previously on
SAM9X60. This controller includes 8 data pins, 4 for playback and 4 for
capture. For I2S and LEFT_J formats, these pins can be used to
send/receive up to 8 audio channels. For DSP_A, with TDM, any pins pair
(DIN/DOUT) from these 4 can be selected to send/receive data. This
version also includes 2 FIFOs (send and receive).
This patch set starts by moving the driver's bindings to yaml and
continues with adding a new compatible for the SAMA7G5 variant, followed
by the changes needed for I2S/LEFT_J support, TDM pin pair selection and
FIFO support, exclusively for SAMA7G5.

Changes in v2:
- moved DT binding conversion patch from the beginning to the end of the
  patch serieses
- patches that update the DT binding are modified to change .txt file
  instead of .yaml

Codrin Ciubotariu (7):
  dt-bindings: mchp,i2s-mcc: Add SAMA7G5 to binding
  ASoC: mchp-i2s-mcc: Add compatible for SAMA7G5
  ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J
    formats
  dt-bindings: mchp,i2s-mcc: Add property to specify pin pair for TDM
  ASoC: mchp-i2s-mcc: Add support to select TDM pins
  ASoC: mchp-i2s-mcc: Add FIFOs support
  ASoC: convert Microchip I2SMCC binding to yaml

 .../bindings/sound/mchp,i2s-mcc.yaml          | 108 ++++++++++++
 .../bindings/sound/mchp-i2s-mcc.txt           |  43 -----
 sound/soc/atmel/Kconfig                       |   3 +
 sound/soc/atmel/mchp-i2s-mcc.c                | 161 +++++++++++++++---
 4 files changed, 252 insertions(+), 63 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/mchp,i2s-mcc.yaml
 delete mode 100644 Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt

--
2.27.0

Documentation/devicetree/bindings/sound/mchp,i2s-mcc.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/mchp,i2s-mcc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip I2S Multi-Channel Controller
+
+maintainers:
+  - Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
+
+description:
+  The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and
+  supports a Time Division Multiplexed (TDM) interface with external
+  multi-channel audio codecs. It consists of a receiver, a transmitter and a
+  common clock generator that can be enabled separately to provide Adapter,
+  Client or Controller modes with receiver and/or transmitter active.
+  On later I2SMCC versions (starting with Microchip's SAMA7G5) I2S
+  multi-channel is supported by using multiple data pins, output and
+  input, without TDM.
+
+properties:
+  "#sound-dai-cells":
+    const: 0
+
+  compatible:
+    enum:
+      - microchip,sam9x60-i2smcc
+      - microchip,sama7g5-i2smcc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Peripheral Bus Clock
+      - description: Generic Clock (Optional). Should be set mostly when Master
+          Mode is required.
+    minItems: 1
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: gclk
+    minItems: 1
+
+  dmas:
+    items:
+      - description: TX DMA Channel
+      - description: RX DMA Channel
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  microchip,tdm-data-pair:
+    description:
+      Represents the DIN/DOUT pair pins that are used to receive/send
+      TDM data. It is optional and it is only needed if the controller
+      uses the TDM mode.
+    $ref: /schemas/types.yaml#/definitions/uint8
+    enum: [0, 1, 2, 3]
+    default: 0
+
+if:
+  properties:
+    compatible:
+      const: microchip,sam9x60-i2smcc
+then:
+  properties:
+    microchip,tdm-data-pair: false
+
+required:
+  - "#sound-dai-cells"
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/dma/at91.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    i2s@f001c000 {
+        #sound-dai-cells = <0>;
+        compatible = "microchip,sam9x60-i2smcc";
+        reg = <0xf001c000 0x100>;
+        interrupts = <34 IRQ_TYPE_LEVEL_HIGH 7>;
+        dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
+                       AT91_XDMAC_DT_PERID(36))>,
+               <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
+                       AT91_XDMAC_DT_PERID(37))>;
+        dma-names = "tx", "rx";
+        clocks = <&i2s_clk>, <&i2s_gclk>;
+        clock-names = "pclk", "gclk";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_i2s_default>;
+    };

Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt

-* Microchip I2S Multi-Channel Controller
-
-Required properties:
-- compatible:     Should be "microchip,sam9x60-i2smcc" or
-		  "microchip,sama7g5-i2smcc".
-- reg:            Should be the physical base address of the controller and the
-                  length of memory mapped region.
-- interrupts:     Should contain the interrupt for the controller.
-- dmas:           Should be one per channel name listed in the dma-names property,
-                  as described in atmel-dma.txt and dma.txt files.
-- dma-names:      Identifier string for each DMA request line in the dmas property.
-		  Two dmas have to be defined, "tx" and "rx".
-- clocks:         Must contain an entry for each entry in clock-names.
-                  Please refer to clock-bindings.txt.
-- clock-names:    Should be one of each entry matching the clocks phandles list:
-                  - "pclk" (peripheral clock) Required.
-                  - "gclk" (generated clock) Optional (1).
-
-Optional properties:
-- pinctrl-0:      Should specify pin control groups used for this controller.
-- princtrl-names: Should contain only one value - "default".
-- microchip,tdm-data-pair: 8 bit value that represents the DIN/DOUT pair pins
-			   which are used to receive/send TDM data. It is optional
-			   and it is only needed if the controller uses the TDM
-			   mode. Not available for "microchip,sam9x60-i2smcc"
-			   compatible. If it's not present, the default value is 0,
-			   so the DIN/DOUT 0 pins are used.
-
-(1) : Only the peripheral clock is required. The generated clock is optional
-      and should be set mostly when Master Mode is required.
-
-Example:
-
-	i2s@f001c000 {
-		compatible = "microchip,sam9x60-i2smcc";
-		reg = <0xf001c000 0x100>;
-		interrupts = <34 IRQ_TYPE_LEVEL_HIGH 7>;
-		dmas = <&dma0
-			(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
-			 AT91_XDMAC_DT_PERID(36))>,
-		       <&dma0
-			(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
-			 AT91_XDMAC_DT_PERID(37))>;
-		dma-names = "tx", "rx";
-		clocks = <&i2s_clk>, <&i2s_gclk>;
-		clock-names = "pclk", "gclk";
-		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_i2s_default>;
-	};