[PATCH v2 15/15] ASoC: dt-bindings: rockchip: i2s: Document property TRCM

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This patch documents property 'rockchip,trcm-sync-tx-only/rx-only'
which is used to specify the lrck.

Signed-off-by: Sugar Zhang <sugar.zhang@xxxxxxxxxxxxxx>
---

Changes in v2:
- split property trcm into single 'trcm-sync-tx-only' and
  'trcm-sync-rx-only' suggested by Nicolas.
- drop change-id

 Documentation/devicetree/bindings/sound/rockchip-i2s.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml b/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
index 11e911a..20f3237 100644
--- a/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
@@ -101,6 +101,14 @@ properties:
       Required property for controllers which support multi channel
       playback/capture.
 
+  rockchip,trcm-sync-tx-only:
+    type: boolean
+    description: Use TX LRCK for both TX and RX.
+
+  rockchip,trcm-sync-rx-only:
+    type: boolean
+    description: Use RX LRCK for both TX and RX.
+
   "#sound-dai-cells":
     const: 0
 
-- 
2.7.4






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