arm64: dts: allwinner: h6: add voltage range to OPP table

Some boards have a fixed regulator and can't reach the voltage set
by the OPP table.

Add a range where the minimal voltage is the target and the maximal
voltage is 1.2V.
Suggested-by: Ondřej Jirman <megous@megous.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

arch/arm64/boot/dts/allwinner/sun50i-h6-cpu-opp.dtsi

@@ -12,90 +12,90 @@ opp@480000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <480000000>;
 
-			opp-microvolt-speed0 = <880000>;
-			opp-microvolt-speed1 = <820000>;
-			opp-microvolt-speed2 = <820000>;
+			opp-microvolt-speed0 = <880000 880000 1200000>;
+			opp-microvolt-speed1 = <820000 820000 1200000>;
+			opp-microvolt-speed2 = <820000 820000 1200000>;
 		};
 
 		opp@720000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <720000000>;
 
-			opp-microvolt-speed0 = <880000>;
-			opp-microvolt-speed1 = <820000>;
-			opp-microvolt-speed2 = <820000>;
+			opp-microvolt-speed0 = <880000 880000 1200000>;
+			opp-microvolt-speed1 = <820000 820000 1200000>;
+			opp-microvolt-speed2 = <820000 820000 1200000>;
 		};
 
 		opp@816000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <816000000>;
 
-			opp-microvolt-speed0 = <880000>;
-			opp-microvolt-speed1 = <820000>;
-			opp-microvolt-speed2 = <820000>;
+			opp-microvolt-speed0 = <880000 880000 1200000>;
+			opp-microvolt-speed1 = <820000 820000 1200000>;
+			opp-microvolt-speed2 = <820000 820000 1200000>;
 		};
 
 		opp@888000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <888000000>;
 
-			opp-microvolt-speed0 = <880000>;
-			opp-microvolt-speed1 = <820000>;
-			opp-microvolt-speed2 = <820000>;
+			opp-microvolt-speed0 = <880000 880000 1200000>;
+			opp-microvolt-speed1 = <820000 820000 1200000>;
+			opp-microvolt-speed2 = <820000 820000 1200000>;
 		};
 
 		opp@1080000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <1080000000>;
 
-			opp-microvolt-speed0 = <940000>;
-			opp-microvolt-speed1 = <880000>;
-			opp-microvolt-speed2 = <880000>;
+			opp-microvolt-speed0 = <940000 940000 1200000>;
+			opp-microvolt-speed1 = <880000 880000 1200000>;
+			opp-microvolt-speed2 = <880000 880000 1200000>;
 		};
 
 		opp@1320000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <1320000000>;
 
-			opp-microvolt-speed0 = <1000000>;
-			opp-microvolt-speed1 = <940000>;
-			opp-microvolt-speed2 = <940000>;
+			opp-microvolt-speed0 = <1000000 1000000 1200000>;
+			opp-microvolt-speed1 = <940000 940000 1200000>;
+			opp-microvolt-speed2 = <940000 940000 1200000>;
 		};
 
 		opp@1488000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <1488000000>;
 
-			opp-microvolt-speed0 = <1060000>;
-			opp-microvolt-speed1 = <1000000>;
-			opp-microvolt-speed2 = <1000000>;
+			opp-microvolt-speed0 = <1060000 1060000 1200000>;
+			opp-microvolt-speed1 = <1000000 1000000 1200000>;
+			opp-microvolt-speed2 = <1000000 1000000 1200000>;
 		};
 
 		opp@1608000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <1608000000>;
 
-			opp-microvolt-speed0 = <1090000>;
-			opp-microvolt-speed1 = <1030000>;
-			opp-microvolt-speed2 = <1030000>;
+			opp-microvolt-speed0 = <1090000 1090000 1200000>;
+			opp-microvolt-speed1 = <1030000 1030000 1200000>;
+			opp-microvolt-speed2 = <1030000 1030000 1200000>;
 		};
 
 		opp@1704000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <1704000000>;
 
-			opp-microvolt-speed0 = <1120000>;
-			opp-microvolt-speed1 = <1060000>;
-			opp-microvolt-speed2 = <1060000>;
+			opp-microvolt-speed0 = <1120000 1120000 1200000>;
+			opp-microvolt-speed1 = <1060000 1060000 1200000>;
+			opp-microvolt-speed2 = <1060000 1060000 1200000>;
 		};
 
 		opp@1800000000 {
 			clock-latency-ns = <244144>; /* 8 32k periods */
 			opp-hz = /bits/ 64 <1800000000>;
 
-			opp-microvolt-speed0 = <1160000>;
-			opp-microvolt-speed1 = <1100000>;
-			opp-microvolt-speed2 = <1100000>;
+			opp-microvolt-speed0 = <1160000 1160000 1200000>;
+			opp-microvolt-speed1 = <1100000 1100000 1200000>;
+			opp-microvolt-speed2 = <1100000 1100000 1200000>;
 		};
 	};
 };