[PATCH v6 5/7] dt-bindings: sound: qcom,sm8250: allow TDM slot properties

Allow standard dai-tdm-slot-* properties in the CPU and codec child
nodes of a DAI link.

The QCOM machine driver parses these child nodes to configure TDM slots
on the active CPU and codec DAIs.  The properties are already defined by
the common tdm-slot binding, but qcom,sm8250.yaml currently rejects them
because the CPU and codec child nodes set additionalProperties: false.

Permit dai-tdm-slot-num, dai-tdm-slot-width and dai-tdm-slot-[rt]x-mask
there so boards using TDM backends can describe the slot layout without
schema warnings.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Prasad Kumpatla <[email protected]>
---
 .../bindings/sound/qcom,sm8250.yaml           | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml b/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml
index d12ac528c33f..1d251b591781 100644
--- a/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml
@@ -93,6 +93,19 @@ patternProperties:
           sound-dai:
             maxItems: 1
 
+          dai-tdm-slot-num:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Number of slots in use
+
+          dai-tdm-slot-width:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Width, in bits, of each slot
+
+        patternProperties:
+          '^dai-tdm-slot-[rt]x-mask$':
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            description: Slot mask for active TDM slots
+
       platform:
         description: Holds subnode which indicates platform dai.
         type: object
@@ -112,6 +125,19 @@ patternProperties:
             minItems: 1
             maxItems: 8
 
+          dai-tdm-slot-num:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Number of slots in use
+
+          dai-tdm-slot-width:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Width, in bits, of each slot
+
+        patternProperties:
+          '^dai-tdm-slot-[rt]x-mask$':
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            description: Slot mask for active TDM slots
+
     required:
       - link-name
       - cpu
-- 
2.34.1