Kernel-4.18.0-80.el8_etnaviv-dr

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/master interface clock
    • “reg”: AHB/slave interface clock
            (only required if GPU can gate slave interface independently)
      
    • “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@130000 {
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>;
};