linux-kernel - [PATCH 3/3] arm64: dts: qcom: qcs6490-rb3gen2: add vdda-aux supply for USB QMP PHY

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Message-Id: <20251110115806.2379442-4-quic_amitsi@quicinc.com>
Date: Mon, 10 Nov 2025 17:28:06 +0530
From: Amit Singh <quic_amitsi@...cinc.com>
To: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, vkoul@...nel.org,
        kishon@...nel.org, lumag@...nel.org, neil.armstrong@...aro.org,
        quic_wcheng@...cinc.com
Cc: Amit Singh <quic_amitsi@...cinc.com>, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_riteshk@...cinc.com,
        quic_rajeevny@...cinc.com, quic_vproddut@...cinc.com
Subject: [PATCH 3/3] arm64: dts: qcom: qcs6490-rb3gen2: add vdda-aux supply for USB QMP PHY

Add the missing vdda-aux-supply to the USB QMP PHY node on the
RB3 Gen2 (QCS6490) platform. The auxiliary 3.0 V rail is required for
stable PHY operation and proper power configuration.

Providing this supply avoids fallback to dummy regulators and helps
ensure reliable USB enumeration.

Signed-off-by: Amit Singh <quic_amitsi@...cinc.com>
---
 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index c146161e4bb4..441b5d9d377c 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -1367,6 +1367,7 @@ &usb_1_hsphy {
 };
 
 &usb_1_qmpphy {
+	vdda-aux-supply = <&vreg_l7c_3p0>;
 	vdda-phy-supply = <&vreg_l6b_1p2>;
 	vdda-pll-supply = <&vreg_l1b_0p912>;
 
-- 
2.34.1