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+Etnaviv DRM master device
+=========================
+
+The Etnaviv DRM master device is a virtual device needed to list all
+Vivante GPU cores that comprise the GPU subsystem.
+
+Required properties:
+- compatible: Should be one of
+ "fsl,imx-gpu-subsystem"
+ "marvell,dove-gpu-subsystem"
+- cores: Should contain a list of phandles pointing to Vivante GPU devices
+
+example:
+
+gpu-subsystem {
+ compatible = "fsl,imx-gpu-subsystem";
+ cores = <&gpu_2d>, <&gpu_3d>;
+};
+
+
+Vivante GPU core devices
+========================
+
+Required properties:
+- compatible: Should be "vivante,gc"
+ A more specific compatible is not needed, as the cores contain chip
+ identification registers at fixed locations, which provide all the
+ necessary information to the driver.
+- reg: should be register base and length as documented in the
+ datasheet
+- interrupts: Should contain the cores interrupt line
+- clocks: should contain one clock for entry in clock-names
+ see Documentation/devicetree/bindings/clock/clock-bindings.txt
+- clock-names:
+ - "bus": AXI/register clock
+ - "core": GPU core clock
+ - "shader": Shader clock (only required if GPU has feature PIPE_3D)
+
+Optional properties:
+- power-domains: a power domain consumer specifier according to
+ Documentation/devicetree/bindings/power/power_domain.txt
+
+example:
+
+gpu_3d: gpu@00130000 {
+ compatible = "vivante,gc";
+ reg = <0x00130000 0x4000>;
+ interrupts = <0 9 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6QDL_CLK_GPU3D_AXI>,
+ <&clks IMX6QDL_CLK_GPU3D_CORE>,
+ <&clks IMX6QDL_CLK_GPU3D_SHADER>;
+ clock-names = "bus", "core", "shader";
+ power-domains = <&gpc 1>;
+};