[PATCH 3/4] ASoC: dt-bindings: Add bindings for Richtek rt9123p

[cy_huang]

From: ChiYuan Huang <cy_huang@xxxxxxxxxxx>

Document the ASoC Richtek rt9123p.

Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
---
 .../bindings/sound/richtek,rt9123p.yaml       | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/richtek,rt9123p.yaml

diff --git a/Documentation/devicetree/bindings/sound/richtek,rt9123p.yaml b/Documentation/devicetree/bindings/sound/richtek,rt9123p.yaml
new file mode 100644
index 000000000000..836cd369a68c
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/richtek,rt9123p.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/richtek,rt9123p.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9123P Audio Amplifier
+
+maintainers:
+  - ChiYuan Huang <cy_huang@xxxxxxxxxxx>
+
+description:
+  RT9123P is a RT9123 variant which does not support I2C control.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt9123p
+
+  '#sound-dai-cells':
+    const: 0
+
+  enable-gpios:
+    maxItems: 1
+
+  enable-delay:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Delay time for 'ENABLE' pin changes intended to make I2S clocks ready to
+      prevent speaker pop noise. The unit is in millisecond.
+    default: 0
+
+required:
+  - compatible
+  - '#sound-dai-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    amplifier {
+        compatible = "richtek,rt9123p";
+        enable-gpios = <&gpio 26 GPIO_ACTIVE_HIGH>;
+        #sound-dai-cells = <0>;
+    };
-- 
2.34.1