arm64: dts: renesas: r8a77995: Add IPMMU power domains

Add power domain information to the R-Car D3 IPMMU device nodes.
As specified by the data sheet, all the IPMMU devices are always on.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a77995.dtsi

@@ -408,6 +408,7 @@ ipmmu_ds0: mmu@e6740000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xe6740000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 0>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -415,6 +416,7 @@ ipmmu_ds1: mmu@e7740000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xe7740000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 1>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -422,6 +424,7 @@ ipmmu_hc: mmu@e6570000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xe6570000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 2>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -430,6 +433,7 @@ ipmmu_mm: mmu@e67b0000 {
 			reg = <0 0xe67b0000 0 0x1000>;
 			interrupts = <GIC_SPI 196 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -437,6 +441,7 @@ ipmmu_mp: mmu@ec670000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xec670000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 4>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -444,6 +449,7 @@ ipmmu_pv0: mmu@fd800000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xfd800000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 6>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -451,6 +457,7 @@ ipmmu_rt: mmu@ffc80000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xffc80000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 10>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -458,6 +465,7 @@ ipmmu_vc0: mmu@fe6b0000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xfe6b0000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 12>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -465,6 +473,7 @@ ipmmu_vi0: mmu@febd0000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xfebd0000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 14>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
@@ -472,6 +481,7 @@ ipmmu_vp0: mmu@fe990000 {
 			compatible = "renesas,ipmmu-r8a77995";
 			reg = <0 0xfe990000 0 0x1000>;
 			renesas,ipmmu-main = <&ipmmu_mm 16>;
+			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};