This patch adds channel-map-index property to enable handling
CPU:Codec = N:M connection.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
.../devicetree/bindings/sound/audio-graph-port.yaml | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
index 60b5e3fd1115..2a7e0784d591 100644
--- a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
+++ b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
@@ -93,6 +93,19 @@ definitions:
minimum: 1
maximum: 64
+ channel-map-index:
+ description: It indicates CPU/Codec DAIs channel mapping index if number of
+ CPU(N) / Codec(M) were not same in one dai-link. channel-map-index is not
+ needed if the numbers were 1:M or N:1 or N==M. Same indexed CPU <-> Codec
+ will be paired. This is CPUx2 <-> Codecx3 sample.
+ CPUA { ... .channel-map-index = <0>; }
+ [0] CPUA <---> CodecA CPUB { ... .channel-map-index = <1 2>; }
+ [1] CPUB <-+-> CodecB
+ [2] \-> CodecC CodecA { ... .channel-map-index = <0>; }
+ CodecB { ... .channel-map-index = <1>; }
+ CodecC { ... .channel-map-index = <2>; }
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+
ports:
$ref: "#/definitions/port-base"
unevaluatedProperties: false
--
2.25.1
