Add the required nodes for sound playback via a connected external display (DisplayPort over USB-C).
In user space just the following route needs to be set (e.g. using ALSA UCM):
amixer -c0 cset name='DISPLAY_PORT_RX Audio Mixer MultiMedia1' 1
Afterwards one can play audio on the MultiMedia1 sound device, e.g.:
aplay -D plughw:0,0 test.wav
Signed-off-by: Luca Weiss luca.weiss@fairphone.com --- arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts index 9e8f9fb57c4723a24704a8239a86c6081910916b..e115b6a52b299ef663ccfb614785f8f89091f39d 100644 --- a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts +++ b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts @@ -14,6 +14,8 @@ #include <dt-bindings/leds/common.h> #include <dt-bindings/pinctrl/qcom,pmic-gpio.h> #include <dt-bindings/regulator/qcom,rpmh-regulator.h> +#include <dt-bindings/sound/qcom,q6asm.h> +#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h> #include "sc7280.dtsi" #include "pm7250b.dtsi" #include "pm7325.dtsi" @@ -1147,6 +1149,35 @@ &sdhc_2 { status = "okay"; };
+&sound { + compatible = "fairphone,fp5-sndcard"; + model = "Fairphone 5"; + + mm1-dai-link { + link-name = "MultiMedia1"; + + cpu { + sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA1>; + }; + }; + + displayport-rx-dai-link { + link-name = "DisplayPort Playback"; + + codec { + sound-dai = <&mdss_dp>; + }; + + cpu { + sound-dai = <&q6afedai DISPLAY_PORT_RX>; + }; + + platform { + sound-dai = <&q6routing>; + }; + }; +}; + &spi13 { status = "okay";