linux-kernel - [PATCH DNM 2/2] arm64: dts: qcom: qcm6490-fairphone-fp5: Add DisplayPort sound support

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Date: Fri, 10 May 2024 14:27:09 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: cros-qcom-dts-watchers@...omium.org, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>, 
 Mohammad Rafi Shaik <quic_mohs@...cinc.com>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH DNM 2/2] 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).

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
Depends on a bunch of patches upstream doing bringup of Display (DSI),
DisplayPort, GPU, and then finally audio could land. But we're blocked
on DPU 1:1:1 topology for all of that unfortunately.

And also machine driver for sound just exists a bit hackily.
---
 arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts
index 05bbf1da5cb8..2bbbcaeff95e 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,q6afe.h>
+#include <dt-bindings/sound/qcom,q6asm.h>
 #include "sc7280.dtsi"
 #include "pm7250b.dtsi"
 #include "pm7325.dtsi"
@@ -774,6 +776,12 @@ &pon_resin {
 	status = "okay";
 };
 
+&q6afedai {
+	dai@104 {
+		reg = <DISPLAY_PORT_RX>;
+	};
+};
+
 &qup_spi13_cs {
 	drive-strength = <6>;
 	bias-disable;
@@ -847,6 +855,34 @@ &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";
+
+		cpu {
+			sound-dai = <&q6afedai DISPLAY_PORT_RX>;
+		};
+
+		platform {
+			sound-dai = <&q6routing>;
+		};
+
+		codec {
+			sound-dai = <&mdss_dp>;
+		};
+	};
+};
+
 &spi13 {
 	status = "okay";
 

-- 
2.45.0