linux-kernel - [PATCH 4/8] arm64: dts: qcom: x1e80100-dell-xps13-9345: mark l12b and l15b always-on

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Message-ID: <20250227081357.25971-5-johan+linaro@kernel.org>
Date: Thu, 27 Feb 2025 09:13:53 +0100
From: Johan Hovold <johan+linaro@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan+linaro@...nel.org>,
	stable@...r.kernel.org,
	Aleksandrs Vinarskis <alex.vinarskis@...il.com>
Subject: [PATCH 4/8] arm64: dts: qcom: x1e80100-dell-xps13-9345: mark l12b and l15b always-on

The l12b and l15b supplies are used by components that are not (fully)
described (and some never will be) and must never be disabled.

Mark the regulators as always-on to prevent them from being disabled,
for example, when consumers probe defer or suspend.

Note that these supplies currently have no consumers described in
mainline.

Fixes: f5b788d0e8cd ("arm64: dts: qcom: Add support for X1-based Dell XPS 13 9345")
Cc: stable@...r.kernel.org	# 6.13
Cc: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
index 86e87f03b0ec..90f588ed7d63 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
@@ -359,6 +359,7 @@ vreg_l12b_1p2: ldo12 {
 			regulator-min-microvolt = <1200000>;
 			regulator-max-microvolt = <1200000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-always-on;
 		};
 
 		vreg_l13b_3p0: ldo13 {
@@ -380,6 +381,7 @@ vreg_l15b_1p8: ldo15 {
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+			regulator-always-on;
 		};
 
 		vreg_l17b_2p5: ldo17 {
-- 
2.45.3