[PATCH 2/3] arm64: dts: mediatek: mt8395-genio-common: add MT6315 PMIC supplies

From: Louis-Alexis Eyraud

Date: Tue Apr 14 2026 - 07:49:12 EST

Mediatek Genio 1200-EVK board has two MT6315 PMICs, powered by the
board system power rail (VSYS) and connected to the SPMI interface.

Add VSYS regulator node for system power rail and the supply inputs of
these two PMICs.

Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
index 62c336e21500..01e153137a6f 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
@@ -201,6 +201,14 @@ wifi_fixed_3v3: regulator-2 {
enable-active-high;
regulator-always-on;
};
+
+ /* system wide 4.2V power rail */
+ reg_vsys: regulator-vsys {
+ compatible = "regulator-fixed";
+ regulator-name = "vsys";
+ regulator-always-on;
+ regulator-boot-on;
+ };
};

&adsp {
@@ -1238,6 +1246,11 @@ mt6315_6: pmic@6 {
compatible = "mediatek,mt6315-regulator";
reg = <0x6 SPMI_USID>;

+ pvdd1-supply = <&reg_vsys>;
+ pvdd2-supply = <&reg_vsys>;
+ pvdd3-supply = <&reg_vsys>;
+ pvdd4-supply = <&reg_vsys>;
+
regulators {
mt6315_6_vbuck1: vbuck1 {
regulator-name = "Vbcpu";
@@ -1254,6 +1267,11 @@ mt6315_7: pmic@7 {
compatible = "mediatek,mt6315-regulator";
reg = <0x7 SPMI_USID>;

+ pvdd1-supply = <&reg_vsys>;
+ pvdd2-supply = <&reg_vsys>;
+ pvdd3-supply = <&reg_vsys>;
+ pvdd4-supply = <&reg_vsys>;
+
regulators {
mt6315_7_vbuck1: vbuck1 {
regulator-name = "Vgpu";

--
2.53.0