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arm64: dts: qcom: qcm6490-fairphone-fp5: Add DisplayPort sound support

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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 <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20250507-fp5-dp-sound-v4-5-4098e918a29e@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Luca Weiss
2025-05-07 10:01:41 +02:00
committed by Bjorn Andersson
parent b033426974
commit 8fc88fbd47
1 changed files with 31 additions and 0 deletions
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31
arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
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@@ -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";