librem5: Set the SoC voltages lower

They're still in the operating range and appear stable on my devices. YMMV.

arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts

@@ -35,7 +35,7 @@ reg_camera1_pwr_en: regulator-camera1-pwr-en {
 
 &a53_opp_table {
 	opp-1000000000 {
-		opp-microvolt = <1000000>;
+		opp-microvolt = <930000>;
 	};
 };
 

arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi

@@ -1107,8 +1107,8 @@ buck1_reg: BUCK1 {
 				regulator-boot-on;
 				regulator-ramp-delay = <1250>;
 				rohm,dvs-run-voltage = <900000>;
-				rohm,dvs-idle-voltage = <850000>;
-				rohm,dvs-suspend-voltage = <800000>;
+				rohm,dvs-idle-voltage = <820000>;
+				rohm,dvs-suspend-voltage = <820000>;
 				regulator-always-on;
 			};
 
@@ -1118,7 +1118,7 @@ buck2_reg: BUCK2 {
 				regulator-max-microvolt = <1300000>;
 				regulator-boot-on;
 				regulator-ramp-delay = <1250>;
-				rohm,dvs-run-voltage = <1000000>;
+				rohm,dvs-run-voltage = <930000>;
 				rohm,dvs-idle-voltage = <900000>;
 				regulator-always-on;
 			};
@@ -1128,14 +1128,14 @@ buck3_reg: BUCK3 {
 				regulator-min-microvolt = <700000>;
 				regulator-max-microvolt = <1300000>;
 				regulator-boot-on;
-				rohm,dvs-run-voltage = <900000>;
+				rohm,dvs-run-voltage = <860000>;
 			};
 
 			buck4_reg: BUCK4 {
 				regulator-name = "buck4";
 				regulator-min-microvolt = <700000>;
 				regulator-max-microvolt = <1300000>;
-				rohm,dvs-run-voltage = <1000000>;
+				rohm,dvs-run-voltage = <860000>;
 			};
 
 			buck5_reg: BUCK5 {
@@ -1746,3 +1746,9 @@ &wdog1 {
 	fsl,ext-reset-output;
 	status = "okay";
 };
+
+&a53_opp_table {
+	opp-1500000000 {
+		opp-microvolt = <930000>;
+	};
+};