diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
index 682c6ad2574d..62158eac45d0 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
@@ -1302,8 +1302,8 @@ mt6366_regulators: regulators {
 
 			vcore {
 				regulator-name = "pp0750_dvdd_core";
-				regulator-min-microvolt = <550000>;
-				regulator-max-microvolt = <800000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <200>;
 				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
@@ -1313,8 +1313,8 @@ vcore {
 
 			mt6366_vdram1_reg: vdram1 {
 				regulator-name = "pp1125_emi_vdd2";
-				regulator-min-microvolt = <1125000>;
-				regulator-max-microvolt = <1125000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <2087500>;
 				regulator-ramp-delay = <12500>;
 				regulator-enable-ramp-delay = <0>;
 				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
@@ -1322,6 +1322,16 @@ mt6366_vdram1_reg: vdram1 {
 				regulator-always-on;
 			};
 
+			mt6366_vpa_reg: vpa {
+				regulator-name = "ppvar_dvdd_vpa";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3650000>;
+				regulator-ramp-delay = <50000>;
+				regulator-enable-ramp-delay = <250>;
+				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
+							   MT6397_BUCK_MODE_FORCE_PWM>;
+			};
+
 			mt6366_vgpu_reg: vgpu {
 				/*
 				 * Called "ppvar_dvdd_gpu" in the schematic.
@@ -1330,19 +1340,17 @@ mt6366_vgpu_reg: vgpu {
 				 */
 				regulator-name = "ppvar_dvdd_vgpu";
 				regulator-min-microvolt = <500000>;
-				regulator-max-microvolt = <950000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <200>;
 				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
 							   MT6397_BUCK_MODE_FORCE_PWM>;
-				regulator-coupled-with = <&mt6366_vsram_gpu_reg>;
-				regulator-coupled-max-spread = <10000>;
 			};
 
 			mt6366_vproc11_reg: vproc11 {
 				regulator-name = "ppvar_dvdd_proc_bc_mt6366";
-				regulator-min-microvolt = <600000>;
-				regulator-max-microvolt = <1200000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <200>;
 				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
@@ -1352,8 +1360,8 @@ mt6366_vproc11_reg: vproc11 {
 
 			mt6366_vproc12_reg: vproc12 {
 				regulator-name = "ppvar_dvdd_proc_lc";
-				regulator-min-microvolt = <600000>;
-				regulator-max-microvolt = <1200000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <200>;
 				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
@@ -1361,10 +1369,21 @@ mt6366_vproc12_reg: vproc12 {
 				regulator-always-on;
 			};
 
+			mt6366_vmodem_reg: vmodem {
+				regulator-name = "ppvar_vmodem";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
+				regulator-ramp-delay = <6250>;
+				regulator-enable-ramp-delay = <900>;
+				regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
+							   MT6397_BUCK_MODE_FORCE_PWM>;
+				regulator-always-on;
+			};
+
 			mt6366_vs1_reg: vs1 {
 				regulator-name = "pp2000_vs1";
-				regulator-min-microvolt = <2000000>;
-				regulator-max-microvolt = <2000000>;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <2587500>;
 				regulator-ramp-delay = <12500>;
 				regulator-enable-ramp-delay = <0>;
 				regulator-always-on;
@@ -1372,8 +1391,8 @@ mt6366_vs1_reg: vs1 {
 
 			mt6366_vs2_reg: vs2 {
 				regulator-name = "pp1350_vs2";
-				regulator-min-microvolt = <1350000>;
-				regulator-max-microvolt = <1350000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <2087500>;
 				regulator-ramp-delay = <12500>;
 				regulator-enable-ramp-delay = <0>;
 				regulator-always-on;
@@ -1397,7 +1416,7 @@ mt6366_vaud28_reg: vaud28 {
 			mt6366_vaux18_reg: vaux18 {
 				regulator-name = "pp1840_vaux18";
 				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <1840000>;
+				regulator-max-microvolt = <1800000>;
 				regulator-enable-ramp-delay = <270>;
 			};
 
@@ -1410,8 +1429,8 @@ mt6366_vbif28_reg: vbif28 {
 
 			mt6366_vcn18_reg: vcn18 {
 				regulator-name = "pp1800_vcn18_x";
-				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <1800000>;
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2100000>;
 				regulator-enable-ramp-delay = <270>;
 			};
 
@@ -1424,8 +1443,8 @@ mt6366_vcn28_reg: vcn28 {
 
 			mt6366_vefuse_reg: vefuse {
 				regulator-name = "pp1800_vefuse";
-				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <1800000>;
+				regulator-min-microvolt = <1700000>;
+				regulator-max-microvolt = <1900000>;
 				regulator-enable-ramp-delay = <270>;
 			};
 
@@ -1438,15 +1457,15 @@ mt6366_vfe28_reg: vfe28 {
 
 			mt6366_vemc_reg: vemc {
 				regulator-name = "pp3000_vemc";
-				regulator-min-microvolt = <3000000>;
-				regulator-max-microvolt = <3000000>;
+				regulator-min-microvolt = <2900000>;
+				regulator-max-microvolt = <3300000>;
 				regulator-enable-ramp-delay = <60>;
 			};
 
 			mt6366_vibr_reg: vibr {
 				regulator-name = "pp2800_vibr_x";
-				regulator-min-microvolt = <2800000>;
-				regulator-max-microvolt = <2800000>;
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <3300000>;
 				regulator-enable-ramp-delay = <60>;
 			};
 
@@ -1482,30 +1501,30 @@ mt6366_vmc_reg: vmc {
 
 			mt6366_vmddr_reg: vmddr {
 				regulator-name = "pm0750_emi_vmddr";
-				regulator-min-microvolt = <700000>;
-				regulator-max-microvolt = <750000>;
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2100000>;
 				regulator-enable-ramp-delay = <325>;
 				regulator-always-on;
 			};
 
 			mt6366_vmch_reg: vmch {
 				regulator-name = "pp3000_vmch";
-				regulator-min-microvolt = <3000000>;
-				regulator-max-microvolt = <3000000>;
+				regulator-min-microvolt = <2900000>;
+				regulator-max-microvolt = <3300000>;
 				regulator-enable-ramp-delay = <60>;
 			};
 
 			mt6366_vcn33_reg: vcn33 {
 				regulator-name = "pp3300_vcn33_x";
 				regulator-min-microvolt = <3300000>;
-				regulator-max-microvolt = <3300000>;
+				regulator-max-microvolt = <3500000>;
 				regulator-enable-ramp-delay = <270>;
 			};
 
 			vdram2 {
 				regulator-name = "pp0600_emi_vddq";
 				regulator-min-microvolt = <600000>;
-				regulator-max-microvolt = <600000>;
+				regulator-max-microvolt = <1800000>;
 				regulator-enable-ramp-delay = <3300>;
 				regulator-always-on;
 			};
@@ -1518,6 +1537,7 @@ mt6366_vrf12_reg: vrf12 {
 			};
 
 			mt6366_vrf18_reg: vrf18 {
+				compatible = "regulator-fixed";
 				regulator-name = "pp1800_vrf18_x";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
@@ -1526,8 +1546,8 @@ mt6366_vrf18_reg: vrf18 {
 
 			vsim1 {
 				regulator-name = "pp1860_vsim1_x";
-				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <1860000>;
+				regulator-min-microvolt = <1700000>;
+				regulator-max-microvolt = <3100000>;
 				regulator-enable-ramp-delay = <540>;
 			};
 
@@ -1540,18 +1560,17 @@ mt6366_vsim2_reg: vsim2 {
 
 			mt6366_vsram_gpu_reg: vsram-gpu {
 				regulator-name = "pp0900_dvdd_sram_gpu";
-				regulator-min-microvolt = <850000>;
-				regulator-max-microvolt = <1050000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <240>;
-				regulator-coupled-with = <&mt6366_vgpu_reg>;
-				regulator-coupled-max-spread = <10000>;
+				regulator-always-on;
 			};
 
 			mt6366_vsram_others_reg: vsram-others {
 				regulator-name = "pp0900_dvdd_sram_core";
-				regulator-min-microvolt = <900000>;
-				regulator-max-microvolt = <900000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <240>;
 				regulator-always-on;
@@ -1559,8 +1578,8 @@ mt6366_vsram_others_reg: vsram-others {
 
 			mt6366_vsram_proc11_reg: vsram-proc11 {
 				regulator-name = "pp0900_dvdd_sram_bc";
-				regulator-min-microvolt = <850000>;
-				regulator-max-microvolt = <1120000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <240>;
 				regulator-always-on;
@@ -1568,8 +1587,8 @@ mt6366_vsram_proc11_reg: vsram-proc11 {
 
 			mt6366_vsram_proc12_reg: vsram-proc12 {
 				regulator-name = "pp0900_dvdd_sram_lc";
-				regulator-min-microvolt = <850000>;
-				regulator-max-microvolt = <1120000>;
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1293750>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <240>;
 				regulator-always-on;
@@ -1578,7 +1597,7 @@ mt6366_vsram_proc12_reg: vsram-proc12 {
 			vusb {
 				regulator-name = "pp3070_vusb";
 				regulator-min-microvolt = <3000000>;
-				regulator-max-microvolt = <3070000>;
+				regulator-max-microvolt = <3100000>;
 				regulator-enable-ramp-delay = <270>;
 				regulator-always-on;
 			};
@@ -1586,7 +1605,7 @@ vusb {
 			vxo22 {
 				regulator-name = "pp2240_vxo22";
 				regulator-min-microvolt = <2200000>;
-				regulator-max-microvolt = <2240000>;
+				regulator-max-microvolt = <2200000>;
 				regulator-enable-ramp-delay = <120>;
 				/* Feeds DCXO internally */
 				regulator-always-on;
