ASoC: dt-bindings: hisilicon: Convert hi6210 I2S to dt-schema

Convert the Hisilicon hi6210 I2S controller hardware binding from
legacy plain text to modern YAML dt-schema format.

During the conversion, the order of the dma-names properties in the
example was corrected to "tx", "rx" to match the official property
description, resolving a contradiction in the original text binding.

Signed-off-by: Chaitanya Sabnis <chaitanya.msabnis@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260327092106.4233-1-chaitanya.msabnis@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt

@@ -1,42 +0,0 @@
-* Hisilicon 6210 i2s controller
-
-Required properties:
-
-- compatible: should be one of the following:
-   - "hisilicon,hi6210-i2s"
-- reg: physical base address of the i2s controller unit and length of
-   memory mapped region.
-- interrupts: should contain the i2s interrupt.
-- clocks: a list of phandle + clock-specifier pairs, one for each entry
-  in clock-names.
-- clock-names: should contain following:
-   - "dacodec"
-   - "i2s-base"
-- dmas: DMA specifiers for tx dma. See the DMA client binding,
-  Documentation/devicetree/bindings/dma/dma.txt
-- dma-names: should be "tx" and "rx"
-- hisilicon,sysctrl-syscon: phandle to sysctrl syscon
-- #sound-dai-cells: Should be set to 1 (for multi-dai)
-   - The dai cell indexes reference the following interfaces:
-       0: S2 interface
-       (Currently that is the only one available, but more may be
-        supported in the future)
-
-Example for the hi6210 i2s controller:
-
-i2s0: i2s@f7118000{
-	compatible = "hisilicon,hi6210-i2s";
-	reg = <0x0 0xf7118000 0x0 0x8000>; /* i2s unit */
-	interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; /* 155 "DigACodec_intr"-32 */
-	clocks = <&sys_ctrl HI6220_DACODEC_PCLK>,
-		 <&sys_ctrl HI6220_BBPPLL0_DIV>;
-	clock-names = "dacodec", "i2s-base";
-	dmas = <&dma0 15 &dma0 14>;
-	dma-names = "rx", "tx";
-	hisilicon,sysctrl-syscon = <&sys_ctrl>;
-	#sound-dai-cells = <1>;
-};
-
-Then when referencing the i2s controller:
-	sound-dai = <&i2s0 0>; /* index 0 => S2 interface */
-

Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.yaml

@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/hisilicon,hi6210-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon hi6210 I2S controller
+
+maintainers:
+  - John Stultz <john.stultz@linaro.org>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: hisilicon,hi6210-i2s
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: dacodec
+      - const: i2s-base
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  hisilicon,sysctrl-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to sysctrl syscon
+
+  "#sound-dai-cells":
+    const: 1
+    description: |
+      The dai cell indexes reference the following interfaces:
+        0: S2 interface
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+  - hisilicon,sysctrl-syscon
+  - "#sound-dai-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/hi6220-clock.h>
+
+    i2s@f7118000 {
+        compatible = "hisilicon,hi6210-i2s";
+        reg = <0xf7118000 0x8000>;
+        interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&sys_ctrl HI6220_DACODEC_PCLK>,
+                 <&sys_ctrl HI6220_BBPPLL0_DIV>;
+        clock-names = "dacodec", "i2s-base";
+        dmas = <&dma0 14>, <&dma0 15>;
+        dma-names = "tx", "rx";
+        hisilicon,sysctrl-syscon = <&sys_ctrl>;
+        #sound-dai-cells = <1>;
+    };