diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index dc1ba143ccf2..62e2d7616f20 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -47,6 +47,17 @@ memory@40000000 {
 		reg = <0 0x40000000 0 0x80000000>;
 	};
 
+	/* system critical LDO 1.8V power rail */
+	pp1800_ldo_z2: regulator-pp1800-ldo-z2 {
+		compatible = "regulator-fixed";
+		regulator-name = "pp1800_ldo_z2";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&pp3300_z2>;
+	};
+
 	pp3300_disp_x: regulator-pp3300-disp-x {
 		compatible = "regulator-fixed";
 		regulator-name = "pp3300_disp_x";
@@ -762,6 +773,7 @@ flash@0 {
 		spi-max-frequency = <52000000>;
 		spi-rx-bus-width = <2>;
 		spi-tx-bus-width = <2>;
+		vcc-supply = <&pp1800_ldo_z2>;
 	};
 };