linux-kernel - [PATCH 9/9] arm64: dts: qcom: qcs6490-rb3gen2: Enable EUD debug functionality

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Message-Id: <20260116232106.2234978-10-elson.serrao@oss.qualcomm.com>
Date: Fri, 16 Jan 2026 15:21:06 -0800
From: Elson Serrao <elson.serrao@....qualcomm.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.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>,
        Souradeep Chowdhury <quic_schowdhu@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 9/9] arm64: dts: qcom: qcs6490-rb3gen2: Enable EUD debug functionality

On this board, EUD resides on the primary High-Speed USB data path between
the connector and the DWC3 controller. Update the device tree connections
to correctly map the connector and controller endpoints, and describe
role-switch capability on the EUD primary path.

Signed-off-by: Elson Serrao <elson.serrao@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index f29a352b0288..2fc2d0aed8dd 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -194,7 +194,7 @@ port@0 {
 					reg = <0>;
 
 					pmic_glink_hs_in: endpoint {
-						remote-endpoint = <&usb_1_dwc3_hs>;
+						remote-endpoint = <&eud_con0>;
 					};
 				};
 
@@ -1176,13 +1176,29 @@ &usb_1 {
 };
 
 &usb_1_dwc3_hs {
-	remote-endpoint = <&pmic_glink_hs_in>;
+	remote-endpoint = <&eud_usb0>;
 };
 
 &usb_1_dwc3_ss {
 	remote-endpoint = <&usb_dp_qmpphy_usb_ss_in>;
 };
 
+&eud_con0 {
+	remote-endpoint = <&pmic_glink_hs_in>;
+};
+
+&eud_usb0 {
+	remote-endpoint = <&usb_1_dwc3_hs>;
+};
+
+&eud {
+	status = "okay";
+};
+
+&eud0 {
+	usb-role-switch;
+};
+
 &usb_1_hsphy {
 	vdda-pll-supply = <&vreg_l10c_0p88>;
 	vdda33-supply = <&vreg_l2b_3p072>;
-- 
2.34.1