ARM: dts: rockchip: add rk3036 gpu node

The rk3036 uses a Mali400 GPU with one pixel processor.
This adds the core node for it, which can be enabled
in board devicetrees.

Rockchip Mali GPUs use only one clock line for both bus and core.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3036.dtsi

@@ -152,6 +152,25 @@
 		};
 	};
 
+	gpu: gpu@10090000 {
+		compatible = "rockchip,rk3036-mali", "arm,mali-400";
+		reg = <0x10090000 0x10000>;
+		interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "gp",
+				  "gpmmu",
+				  "pp0",
+				  "pp0mmu";
+		assigned-clocks = <&cru SCLK_GPU>;
+		assigned-clock-rates = <100000000>;
+		clocks = <&cru SCLK_GPU>, <&cru SCLK_GPU>;
+		clock-names = "core", "bus";
+		resets = <&cru SRST_GPU>;
+		status = "disabled";
+	};
+
 	vop: vop@10118000 {
 		compatible = "rockchip,rk3036-vop";
 		reg = <0x10118000 0x19c>;