[PATCH] ASoC: dt-bindings: rockchip: Convert rk3399-gru-sound to YAML

[Anushka Badhe <anushkabadhe@gmail.com>]

Convert the rockchip,rk3399-gru-sound.txt DT binding to YAML Schema.

During conversion, property rockchip,cpu was changed from phandle to
phandle-array to properly validate existing DTS usage.

Signed-off-by: Anushka Badhe <anushkabadhe@gmail.com>
---
This was the error reported by dtbs_check when rockchip,cpu was defined as phandle:

sound (rockchip,rk3399-gru-sound): rockchip,cpu:0: [211, 212] is too
long from schema $id:
http://devicetree.org/schemas/sound/rockchip,rk3399-gru-sound.yaml

This error was found when verifying against
rockchip/rk3399-gru-kevin.dtb

 .../sound/rockchip,rk3399-gru-sound.txt       | 22 ---------
 .../sound/rockchip,rk3399-gru-sound.yaml      | 47 +++++++++++++++++++
 2 files changed, 47 insertions(+), 22 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
 create mode 100644 Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.yaml

diff --git a/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
deleted file mode 100644
index 72d3cf4c2606..000000000000
--- a/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-ROCKCHIP with MAX98357A/RT5514/DA7219 codecs on GRU boards
-
-Required properties:
-- compatible: "rockchip,rk3399-gru-sound"
-- rockchip,cpu: The phandle of the Rockchip I2S controller that's
-  connected to the codecs
-- rockchip,codec: The phandle of the audio codecs
-
-Optional properties:
-- dmic-wakeup-delay-ms : specify delay time (ms) for DMIC ready.
-  If this option is specified, which means it's required dmic need
-  delay for DMIC to ready so that rt5514 can avoid recording before
-  DMIC send valid data
-
-Example:
-
-sound {
-	compatible = "rockchip,rk3399-gru-sound";
-	rockchip,cpu = <&i2s0>;
-	rockchip,codec = <&max98357a &rt5514 &da7219>;
-	dmic-wakeup-delay-ms = <20>;
-};
diff --git a/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.yaml b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.yaml
new file mode 100644
index 000000000000..10001fd2f886
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/rockchip,rk3399-gru-sound.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROCKCHIP with MAX98357A/RT5514/DA7219 codecs on GRU boards
+
+maintainers:
+  - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+  compatible:
+    const: rockchip,rk3399-gru-sound
+
+  rockchip,cpu:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      The phandle of the Rockchip I2S controller that's connected to the codecs
+
+  rockchip,codec:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: The phandle of the audio codecs
+
+  dmic-wakeup-delay-ms:
+    description:
+      specify delay time (ms) for DMIC ready.
+      If this option is specified, which means it's required dmic need
+      delay for DMIC to ready so that rt5514 can avoid recording before
+      DMIC sends valid data
+
+required:
+  - compatible
+  - rockchip,cpu
+  - rockchip,codec
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+      compatible = "rockchip,rk3399-gru-sound";
+      rockchip,cpu = <&i2s0>;
+      rockchip,codec = <&max98357a &rt5514 &da7219>;
+      dmic-wakeup-delay-ms = <20>;
+    };
+
-- 
2.43.0


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