linux-kernel - [PATCH 1/2] arm64: dts: qcom: sc7280: Add q6usbdai node

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Message-Id: <20250801-fp5-usb-audio-offload-v1-1-240fc213d3d3@fairphone.com>
Date: Fri, 01 Aug 2025 15:51:05 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: cros-qcom-dts-watchers@...omium.org, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Wesley Cheng <quic_wcheng@...cinc.com>, 
 Stephan Gerhold <stephan.gerhold@...aro.org>
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 1/2] arm64: dts: qcom: sc7280: Add q6usbdai node

Add a node for q6usb which handles USB audio offloading, allowing to
play audio via a USB-C headset with lower power consumption and enabling
some other features.

We also need to set num-hc-interrupters for the dwc3 for the q6usb to be
able to use its sideband interrupter.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 arch/arm64/boot/dts/qcom/sc7280.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index 64a2abd3010018e94eb50c534a509d6b4cf2473b..c019f58d2f438f23b4be2e879ecd78850e3df1ef 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -3862,6 +3862,13 @@ q6afecc: clock-controller {
 							compatible = "qcom,q6afe-clocks";
 							#clock-cells = <2>;
 						};
+
+						q6usbdai: usbd {
+							compatible = "qcom,q6usb";
+							iommus = <&apps_smmu 0x180f 0x0>;
+							#sound-dai-cells = <1>;
+							qcom,usb-audio-intr-idx = /bits/ 16 <2>;
+						};
 					};
 
 					q6asm: service@7 {
@@ -4303,6 +4310,7 @@ usb_1_dwc3: usb@...0000 {
 				reg = <0 0x0a600000 0 0xe000>;
 				interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
 				iommus = <&apps_smmu 0xe0 0x0>;
+				num-hc-interrupters = /bits/ 16 <3>;
 				snps,dis_u2_susphy_quirk;
 				snps,dis_enblslpm_quirk;
 				snps,parkmode-disable-ss-quirk;

-- 
2.50.1