There will be multiple boards sharing this machine driver.
Use compatible string to specify the use case.
"rockchip,rockchip-audio-max98090" for max98090-only.
"rockchip,rockchip-audio-hdmi" for HDMI-only
"rockchip,rockchip-audio-max98090-hdmi" for max98090 plus
Move these properties to optional because they are not needed for
HDMI-only use case.
"rockchip,audio-codec": The phandle of the MAX98090 audio codec
"rockchip,headset-codec": The phandle of Ext chip for jack detection
The machine driver change will add support for HDMI codec in
rockchip-max98090.
Add one optional property "rockchip,hdmi-codec" to let user specify HDMI
device node in DTS so machine driver can find hdmi-codec device node for
codec DAI.
Signed-off-by: Cheng-Yi Chiang <cychiang@xxxxxxxxxxxx>
---
.../bindings/sound/rockchip-max98090.txt | 38 +++++++++++++++++--
1 file changed, 35 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/rockchip-max98090.txt b/Documentation/devicetree/bindings/sound/rockchip-max98090.txt
index a805aa99ad75..75f438741ca6 100644
--- a/Documentation/devicetree/bindings/sound/rockchip-max98090.txt
+++ b/Documentation/devicetree/bindings/sound/rockchip-max98090.txt
@@ -1,15 +1,29 @@
ROCKCHIP with MAX98090 CODEC
Required properties:
-- compatible: "rockchip,rockchip-audio-max98090"
+- compatible: Set this property to one of the strings below depending on the
+ usage on the board:
+ "rockchip,rockchip-audio-max98090" for max98090-only.
+ "rockchip,rockchip-audio-hdmi" for HDMI-only
+ "rockchip,rockchip-audio-max98090-hdmi" for max98090 plus HDMI.
- rockchip,model: The user-visible name of this sound complex
- rockchip,i2s-controller: The phandle of the Rockchip I2S controller that's
connected to the CODEC
-- rockchip,audio-codec: The phandle of the MAX98090 audio codec
-- rockchip,headset-codec: The phandle of Ext chip for jack detection
+
+Optional properties:
+- rockchip,audio-codec: The phandle of the MAX98090 audio codec. This is
+ required if compatible string is set to the one
+ with max98090.
+- rockchip,headset-codec: The phandle of Ext chip for jack detection. This is
+ required if compatible string is set to the one
+ with max98090.
+- rockchip,hdmi-codec: The phandle of HDMI device for HDMI codec. This is
+ required if compatible string is set to the one with
+ HDMI.
Example:
+/* For max98090-only board. */
sound {
compatible = "rockchip,rockchip-audio-max98090";
rockchip,model = "ROCKCHIP-I2S";
@@ -17,3 +31,21 @@ sound {
rockchip,audio-codec = <&max98090>;
rockchip,headset-codec = <&headsetcodec>;
};
+
+/* For HDMI-only board. */
+sound {
+ compatible = "rockchip,rockchip-audio-hdmi";
+ rockchip,model = "ROCKCHIP-I2S";
+ rockchip,i2s-controller = <&i2s>;
+ rockchip,hdmi-codec = <&hdmi>;
+};
+
+/* For max98090 plus HDMI board. */
+sound {
+ compatible = "rockchip,rockchip-audio-max98090-hdmi";
+ rockchip,model = "ROCKCHIP-I2S";
+ rockchip,i2s-controller = <&i2s>;
+ rockchip,audio-codec = <&max98090>;
+ rockchip,headset-codec = <&headsetcodec>;
+ rockchip,hdmi-codec = <&hdmi>;
+};
--
2.24.0.rc0.303.g954a862665-goog
