linux-kernel - [PATCH v2 4/5] arm64: dts: qcom: sm6350: Add q6usbdai node

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Message-Id: <20250501-fp4-usb-audio-offload-v2-4-30f4596281cd@fairphone.com>
Date: Thu, 01 May 2025 08:48:50 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Felipe Balbi <balbi@...nel.org>, 
 Srinivas Kandagatla <srini@...nel.org>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...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-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 linux-arm-msm@...r.kernel.org, linux-sound@...r.kernel.org, 
 Luca Weiss <luca.weiss@...rphone.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Subject: [PATCH v2 4/5] arm64: dts: qcom: sm6350: 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.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 arch/arm64/boot/dts/qcom/sm6350.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
index 375f964e793626115609996aa25ea4e0fefe6c5e..92a2f6e0c3d856eb2549a89509486979a7439cd8 100644
--- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
@@ -1351,6 +1351,13 @@ q6afecc: clock-controller {
 							compatible = "qcom,q6afe-clocks";
 							#clock-cells = <2>;
 						};
+
+						q6usbdai: usbd {
+							compatible = "qcom,q6usb";
+							iommus = <&apps_smmu 0x100f 0x0>;
+							#sound-dai-cells = <1>;
+							qcom,usb-audio-intr-idx = /bits/ 16 <2>;
+						};
 					};
 
 					q6asm: service@7 {
@@ -1979,6 +1986,7 @@ usb_1_dwc3: usb@...0000 {
 				reg = <0 0x0a600000 0 0xcd00>;
 				interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
 				iommus = <&apps_smmu 0x540 0x0>;
+				num-hc-interrupters = /bits/ 16 <3>;
 				snps,dis_u2_susphy_quirk;
 				snps,dis_enblslpm_quirk;
 				snps,has-lpm-erratum;

-- 
2.49.0