From 8fc88fbd471044d66cb2fd85dc0d431866ed7448 Mon Sep 17 00:00:00 2001 From: Luca Weiss Date: Wed, 7 May 2025 10:01:41 +0200 Subject: [PATCH] arm64: dts: qcom: qcm6490-fairphone-fp5: Add DisplayPort sound support 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 Reviewed-by: Dmitry Baryshkov Signed-off-by: Luca Weiss Link: https://lore.kernel.org/r/20250507-fp5-dp-sound-v4-5-4098e918a29e@fairphone.com Signed-off-by: Bjorn Andersson --- .../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 9e8f9fb57c472..e115b6a52b299 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 #include #include +#include +#include #include "sc7280.dtsi" #include "pm7250b.dtsi" #include "pm7325.dtsi" @@ -1147,6 +1149,35 @@ 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"; -- 2.50.1