[PATCH v2] ASoC: dt-bindings: cirrus,cs4270: Convert to dtschema

[Animesh Agarwal]

Convert the Cirrus Logic CS4270 audio CODEC bindings to DT schema. Add
missing va-supply, vd-supply and vlc-supply properties, because they
are already being used in the DTS and the driver for this device.

Cc: Daniel Baluta <daniel.baluta@xxxxxxx>
Signed-off-by: Animesh Agarwal <animeshagarwal28@xxxxxxxxx>

---
Changes in v2:
  - Added proper description for power supply properties.
  - Added ref to dai-common.
  - Added '#sound-dai-cells'.
  - Dropped unused labels in example.
  - Replaced example node name to a generic name.
---
 .../bindings/sound/cirrus,cs4270.yaml         | 59 +++++++++++++++++++
 .../devicetree/bindings/sound/cs4270.txt      | 21 -------
 2 files changed, 59 insertions(+), 21 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs4270.yaml
 delete mode 100644 Documentation/devicetree/bindings/sound/cs4270.txt

diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs4270.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs4270.yaml
new file mode 100644
index 000000000000..336e11773694
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cirrus,cs4270.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,cs4270.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS4270 audio CODEC
+
+maintainers:
+  - patches@xxxxxxxxxxxxxxxxxxxxx
+
+description:
+  The CS4270 is a stereo audio codec. The driver for this device currently only
+  supports I2C.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: cirrus,cs4270
+
+  reg:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 0
+
+  reset-gpios:
+    description:
+      This pin will be deasserted before communication to the codec starts.
+    maxItems: 1
+
+  va-supply:
+    description: Analog power supply.
+
+  vd-supply:
+    description: Digital power supply.
+
+  vlc-supply:
+    description: Serial Control Port power supply.
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      codec@48 {
+          compatible = "cirrus,cs4270";
+          reg = <0x48>;
+      };
+    };
diff --git a/Documentation/devicetree/bindings/sound/cs4270.txt b/Documentation/devicetree/bindings/sound/cs4270.txt
deleted file mode 100644
index c33770ec4c3c..000000000000
--- a/Documentation/devicetree/bindings/sound/cs4270.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-CS4270 audio CODEC
-
-The driver for this device currently only supports I2C.
-
-Required properties:
-
-  - compatible : "cirrus,cs4270"
-
-  - reg : the I2C address of the device for I2C
-
-Optional properties:
-
-  - reset-gpios : a GPIO spec for the reset pin. If specified, it will be
-		  deasserted before communication to the codec starts.
-
-Example:
-
-codec: cs4270@48 {
-	compatible = "cirrus,cs4270";
-	reg = <0x48>;
-};
-- 
2.45.2