linux-kernel - [PATCH 4/6] arm64: dts: qcom: monaco-evk: fix the SerDes PHY regulators

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Message-Id: <20251124-sgmiieth_serdes_regulator-v1-4-73ae8f9cbe2a@oss.qualcomm.com>
Date: Mon, 24 Nov 2025 14:55:20 +0530
From: Mohd Ayaan Anwar <mohd.anwar@....qualcomm.com>
To: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Wasim Nazir <wasim.nazir@....qualcomm.com>,
        Mohd Ayaan Anwar <quic_mohdayaa@...cinc.com>,
        Yijie Yang <quic_yijiyang@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Mohd Ayaan Anwar <mohd.anwar@....qualcomm.com>
Subject: [PATCH 4/6] arm64: dts: qcom: monaco-evk: fix the SerDes PHY
 regulators

The Qualcomm SerDes PHY, present on multiple boards, has two regulators
providing supplies of 1.2V (L5A) and 0.9V (L4A). Update the node to
reflect the same instead of incorrectly voting for only L4A.

Fixes: 117d6bc9326b ("arm64: dts: qcom: qcs8300: Add Monaco EVK board")
Signed-off-by: Mohd Ayaan Anwar <mohd.anwar@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/monaco-evk.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
index bb35893da73d141465a325dcfb5542fc032c95a1..4b51a73cb5e95ab09deb9c94b4cdf06bf4c09a7b 100644
--- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
@@ -429,7 +429,8 @@ &remoteproc_gpdsp {
 };
 
 &serdes0 {
-	phy-supply = <&vreg_l4a>;
+	phy-supply = <&vreg_l5a>;
+	vdda-0p9-supply = <&vreg_l4a>;
 
 	status = "okay";
 };

-- 
2.34.1