ASoC: dt-bindings: fsl,ssi: Convert to YAML

Convert the fsl,ssi binding to YAML.

Add below compatible strings which were not listed
in document:

fsl,imx50-ssi
fsl,imx53-ssi
fsl,imx25-ssi
fsl,imx27-ssi
fsl,imx6q-ssi
fsl,imx6sl-ssi
fsl,imx6sx-ssi

Add below fsl,mode strings which were not listed.

i2s-slave
i2s-master
lj-slave
lj-master
rj-slave
rj-master

Add 'ac97-gpios' property which were not listed.
Then dtbs_check can pass.

And remove the 'codec' description which should be
in the 'codec' binding doc.

Signed-off-by: Shengjiu Wang <[email protected]>
Reviewed-by: Rob Herring (Arm) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: TE-N-ShengjiuWang

Documentation/devicetree/bindings/sound/fsl,ssi.txt

@@ -0,0 +1,194 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,ssi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Synchronous Serial Interface
+
+maintainers:
+  - Shengjiu Wang <[email protected]>
+
+description:
+  Notes on fsl,playback-dma and fsl,capture-dma
+  On SOCs that have an SSI, specific DMA channels are hard-wired for playback
+  and capture.  On the MPC8610, for example, SSI1 must use DMA channel 0 for
+  playback and DMA channel 1 for capture.  SSI2 must use DMA channel 2 for
+  playback and DMA channel 3 for capture.  The developer can choose which
+  DMA controller to use, but the channels themselves are hard-wired.  The
+  purpose of these two properties is to represent this hardware design.
+
+  The device tree nodes for the DMA channels that are referenced by
+  "fsl,playback-dma" and "fsl,capture-dma" must be marked as compatible with
+  "fsl,ssi-dma-channel".  The SOC-specific compatible string (e.g.
+  "fsl,mpc8610-dma-channel") can remain.  If these nodes are left as
+  "fsl,elo-dma-channel" or "fsl,eloplus-dma-channel", then the generic Elo DMA
+  drivers (fsldma) will attempt to use them, and it will conflict with the
+  sound drivers.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - fsl,imx50-ssi
+              - fsl,imx53-ssi
+          - const: fsl,imx51-ssi
+          - const: fsl,imx21-ssi
+      - items:
+          - enum:
+              - fsl,imx25-ssi
+              - fsl,imx27-ssi
+              - fsl,imx35-ssi
+              - fsl,imx51-ssi
+          - const: fsl,imx21-ssi
+      - items:
+          - enum:
+              - fsl,imx6q-ssi
+              - fsl,imx6sl-ssi
+              - fsl,imx6sx-ssi
+          - const: fsl,imx51-ssi
+      - items:
+          - const: fsl,imx21-ssi
+      - items:
+          - const: fsl,mpc8610-ssi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: The ipg clock for register access
+      - description: clock for SSI master mode
+    minItems: 1
+
+  clock-names:
+    items:
+      - const: ipg
+      - const: baud
+    minItems: 1
+
+  dmas:
+    oneOf:
+      - items:
+          - description: DMA controller phandle and request line for RX
+          - description: DMA controller phandle and request line for TX
+      - items:
+          - description: DMA controller phandle and request line for RX0
+          - description: DMA controller phandle and request line for TX0
+          - description: DMA controller phandle and request line for RX1
+          - description: DMA controller phandle and request line for TX1
+
+  dma-names:
+    oneOf:
+      - items:
+          - const: rx
+          - const: tx
+      - items:
+          - const: rx0
+          - const: tx0
+          - const: rx1
+          - const: tx1
+
+  "#sound-dai-cells":
+    const: 0
+    description: optional, some dts node didn't add it.
+
+  cell-index:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2]
+    description: The SSI index
+
+  ac97-gpios:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: Please refer to soc-ac97link.txt
+
+  codec-handle:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to a 'codec' node that defines an audio
+      codec connected to this SSI.  This node is typically
+      a child of an I2C or other control node.
+
+  fsl,fifo-depth:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The number of elements in the transmit and receive FIFOs.
+      This number is the maximum allowed value for SFCSR[TFWM0].
+    enum: [8, 15]
+
+  fsl,fiq-stream-filter:
+    type: boolean
+    description:
+      Disabled DMA and use FIQ instead to filter the codec stream.
+      This is necessary for some boards where an incompatible codec
+      is connected to this SSI, e.g. on pca100 and pcm043.
+
+  fsl,mode:
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [ ac97-slave, ac97-master, i2s-slave, i2s-master,
+            lj-slave, lj-master, rj-slave, rj-master ]
+    description: |
+      "ac97-slave" - AC97 mode, SSI is clock slave
+      "ac97-master" - AC97 mode, SSI is clock master
+      "i2s-slave" - I2S mode, SSI is clock slave
+      "i2s-master" - I2S mode, SSI is clock master
+      "lj-slave" - Left justified mode, SSI is clock slave
+      "lj-master" - Left justified mode, SSI is clock master
+      "rj-slave" - Right justified mode, SSI is clock slave
+      "rj-master" - Right justified mode, SSI is clock master
+
+  fsl,ssi-asynchronous:
+    type: boolean
+    description: If specified, the SSI is to be programmed in asynchronous
+      mode.  In this mode, pins SRCK, STCK, SRFS, and STFS must
+      all be connected to valid signals.  In synchronous mode,
+      SRCK and SRFS are ignored.  Asynchronous mode allows
+      playback and capture to use different sample sizes and
+      sample rates.  Some drivers may require that SRCK and STCK
+      be connected together, and SRFS and STFS be connected
+      together.  This would still allow different sample sizes,
+      but not different sample rates.
+
+  fsl,playback-dma:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle to a node for the DMA channel to use for
+      playback of audio.  This is typically dictated by SOC
+      design. Only used on Power Architecture.
+
+  fsl,capture-dma:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle to a node for the DMA channel to use for
+      capture (recording) of audio.  This is typically dictated
+      by SOC design. Only used on Power Architecture.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - fsl,fifo-depth
+
+allOf:
+  - $ref: dai-common.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/imx6qdl-clock.h>
+    ssi@2028000 {
+        compatible = "fsl,imx6q-ssi", "fsl,imx51-ssi";
+        reg = <0x02028000 0x4000>;
+        interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clks IMX6QDL_CLK_SSI1_IPG>,
+                 <&clks IMX6QDL_CLK_SSI1>;
+        clock-names = "ipg", "baud";
+        dmas = <&sdma 37 1 0>, <&sdma 38 1 0>;
+        dma-names = "rx", "tx";
+        #sound-dai-cells = <0>;
+        fsl,fifo-depth = <15>;
+    };