[PATCH] arm64: dts: qcom: x1e80100-romulus: Keep L12B and L15B always on

From: Konrad Dybcio
Date: Tue Mar 04 2025 - 12:42:09 EST


From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

These regulators power some electronic components onboard. They're
most likely kept online by other pieces of firmware, but you can never
be sure enough.

Fixes: 09d77be56093 ("arm64: dts: qcom: Add support for X1-based Surface Laptop 7 devices")
Reported-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
index 5867953c73564ca7ae1279b73f6834aa1d732792..6a883fafe3c77a45e045beba8357d67caa88dabf 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
@@ -510,6 +510,7 @@ vreg_l12b: ldo12 {
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-always-on;
};

vreg_l13b: ldo13 {
@@ -531,6 +532,7 @@ vreg_l15b: ldo15 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ regulator-always-on;
};

vreg_l16b: ldo16 {

---
base-commit: 20d5c66e1810e6e8805ec0d01373afb2dba9f51a
change-id: 20250304-topic-sl7_vregs_aon-1201ee52ce83

Best regards,
--
Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>