ASoC: qcom: dt-bindings: Add sdm845 machine bindings

Add devicetree bindings documentation file for SDM845 sound card.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/qcom,sdm845.txt b/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
new file mode 100644 (file)
index 0000000..408c483
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+++ b/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
@@ -0,0 +1,80 @@
+* Qualcomm Technologies Inc. SDM845 ASoC sound card driver
+
+This binding describes the SDM845 sound card, which uses qdsp for audio.
+
+- compatible:
+       Usage: required
+       Value type: <stringlist>
+       Definition: must be "qcom,sdm845-sndcard"
+
+- audio-routing:
+       Usage: Optional
+       Value type: <stringlist>
+       Definition:  A list of the connections between audio components.
+                 Each entry is a pair of strings, the first being the
+                 connection's sink, the second being the connection's
+                 source. Valid names could be power supplies, MicBias
+                 of codec and the jacks on the board.
+
+- model:
+       Usage: required
+       Value type: <stringlist>
+       Definition: The user-visible name of this sound card.
+
+= dailinks
+Each subnode of sndcard represents either a dailink, and subnodes of each
+dailinks would be cpu/codec/platform dais.
+
+- link-name:
+       Usage: required
+       Value type: <string>
+       Definition: User friendly name for dai link
+
+= CPU, PLATFORM, CODEC dais subnodes
+- cpu:
+       Usage: required
+       Value type: <subnode>
+       Definition: cpu dai sub-node
+
+- codec:
+       Usage: required
+       Value type: <subnode>
+       Definition: codec dai sub-node
+
+- platform:
+       Usage: Optional
+       Value type: <subnode>
+       Definition: platform dai sub-node
+
+- sound-dai:
+       Usage: required
+       Value type: <phandle>
+       Definition: dai phandle/s and port of CPU/CODEC/PLATFORM node.
+
+Example:
+
+audio {
+       compatible = "qcom,sdm845-sndcard";
+       model = "sdm845-snd-card";
+       pinctrl-names = "default", "sleep";
+       pinctrl-0 = <&pri_mi2s_active &pri_mi2s_ws_active>;
+       pinctrl-1 = <&pri_mi2s_sleep &pri_mi2s_ws_sleep>;
+
+       mm1-dai-link {
+               link-name = "MultiMedia1";
+               cpu {
+                       sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA1>;
+               };
+       };
+
+       pri-mi2s-dai-link {
+               link-name = "PRI MI2S Playback";
+               cpu {
+                       sound-dai = <&q6afedai PRIMARY_MI2S_RX>;
+               };
+
+               platform {
+                       sound-dai = <&q6routing>;
+               };
+       };
+};