arm64: dts: rockchip: Add vdec support for RK3328

The RK3328 has an vdec device with dedicated iommu.
Describe the vdec device, the required power-domains
and enable the iommu in the devicetree.
Signed-off-by: Christopher Obbard <chris.obbard@collabora.com>
Link: https://lore.kernel.org/r/20220425184510.1138446-4-chris.obbard@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3328.dtsi

@@ -306,6 +306,10 @@ power-domain@RK3328_PD_HEVC {
 			};
 			power-domain@RK3328_PD_VIDEO {
 				reg = <RK3328_PD_VIDEO>;
+				clocks = <&cru ACLK_RKVDEC>,
+					 <&cru HCLK_RKVDEC>,
+					 <&cru SCLK_VDEC_CABAC>,
+					 <&cru SCLK_VDEC_CORE>;
 				#power-domain-cells = <0>;
 			};
 			power-domain@RK3328_PD_VPU {
@@ -660,6 +664,20 @@ vpu_mmu: iommu@ff350800 {
 		power-domains = <&power RK3328_PD_VPU>;
 	};
 
+	vdec: video-codec@ff360000 {
+		compatible = "rockchip,rk3328-vdec", "rockchip,rk3399-vdec";
+		reg = <0x0 0xff360000 0x0 0x400>;
+		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru ACLK_RKVDEC>, <&cru HCLK_RKVDEC>,
+			 <&cru SCLK_VDEC_CABAC>, <&cru SCLK_VDEC_CORE>;
+		clock-names = "axi", "ahb", "cabac", "core";
+		assigned-clocks = <&cru ACLK_RKVDEC>, <&cru SCLK_VDEC_CABAC>,
+				  <&cru SCLK_VDEC_CORE>;
+		assigned-clock-rates = <400000000>, <400000000>, <300000000>;
+		iommus = <&vdec_mmu>;
+		power-domains = <&power RK3328_PD_VIDEO>;
+	};
+
 	vdec_mmu: iommu@ff360480 {
 		compatible = "rockchip,iommu";
 		reg = <0x0 0xff360480 0x0 0x40>, <0x0 0xff3604c0 0x0 0x40>;
@@ -667,7 +685,7 @@ vdec_mmu: iommu@ff360480 {
 		clocks = <&cru ACLK_RKVDEC>, <&cru HCLK_RKVDEC>;
 		clock-names = "aclk", "iface";
 		#iommu-cells = <0>;
-		status = "disabled";
+		power-domains = <&power RK3328_PD_VIDEO>;
 	};
 
 	vop: vop@ff370000 {