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-rw-r--r--Documentation/devicetree/bindings/sound/mt8173-rt5650.txt10
1 files changed, 8 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt b/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
index 5bfa6b60530b..29dce2ac8773 100644
--- a/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
+++ b/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
@@ -1,8 +1,9 @@
-MT8173 with RT5650 CODECS
+MT8173 with RT5650 CODECS and HDMI via I2S
Required properties:
- compatible : "mediatek,mt8173-rt5650"
- mediatek,audio-codec: the phandles of rt5650 codecs
+ and of the hdmi encoder node
- mediatek,platform: the phandle of MT8173 ASoC platform
Optional subnodes:
@@ -12,12 +13,17 @@ Required codec-capture subnode properties:
<&rt5650 0> : Default setting. Connect rt5650 I2S1 for capture. (dai_name = rt5645-aif1)
<&rt5650 1> : Connect rt5650 I2S2 for capture. (dai_name = rt5645-aif2)
+- mediatek,mclk: the MCLK source
+ 0 : external oscillator, MCLK = 12.288M
+ 1 : internal source from mt8173, MCLK = sampling rate*256
+
Example:
sound {
compatible = "mediatek,mt8173-rt5650";
- mediatek,audio-codec = <&rt5650>;
+ mediatek,audio-codec = <&rt5650 &hdmi0>;
mediatek,platform = <&afe>;
+ mediatek,mclk = <0>;
codec-capture {
sound-dai = <&rt5650 1>;
};