[PATCH v4 4/9] ASoC: dt-bindings: wcd938x-sdw: add bindings for wcd938x-sdw

[Srinivas Kandagatla]

Qualcomm WCD9380/WCD9385 Codec is a standalone Hi-Fi audio codec IC
connected over SoundWire. This device has two SoundWire devices RX and
TX respectively. This bindings is for those slave devices on WCD9380/WCD9385.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
 .../bindings/sound/qcom,wcd938x-sdw.yaml      | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd938x-sdw.yaml

diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd938x-sdw.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd938x-sdw.yaml
new file mode 100644
index 000000000000..fff33c65491b
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/qcom,wcd938x-sdw.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,wcd938x-sdw.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for Qualcomm SoundWire Slave devices on WCD9380/WCD9385
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
+
+description: |
+  Qualcomm WCD9380/WCD9385 Codec is a standalone Hi-Fi audio codec IC.
+  It has RX and TX Soundwire slave devices. This bindings is for the
+  slave devices.
+
+properties:
+  compatible:
+    const: sdw20217010d00
+
+  reg:
+    maxItems: 1
+
+  qcom,direction:
+    description: direction of the SoundWire device instance
+    enum:
+      - rx
+      - tx
+
+  qcom,port-mapping:
+    description: |
+      Specifies static port mapping between slave and master ports.
+      In the order of slave port index.
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 4
+    maxItems: 5
+
+required:
+  - compatible
+  - reg
+  - qcom,direction
+  - qcom,port-mapping
+
+additionalProperties: false
+
+examples:
+  - |
+    soundwire at 3230000 {
+        #address-cells = <2>;
+        #size-cells = <0>;
+        reg = <0x03230000 0x2000>;
+
+        codec at 0,3 {
+            compatible = "sdw20217010d00";
+            reg  = <0 3>;
+            qcom,direction = "tx";
+            qcom,port-mapping = <2 3 4 5>;
+        };
+    };
+
+...
-- 
2.21.0