linux_dsm_epyc7002/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt

ARM Mali Midgard GPU
====================

Required properties:

- compatible :
  * Must contain one of the following:
    + "arm,mali-t604"
    + "arm,mali-t624"
    + "arm,mali-t628"
    + "arm,mali-t720"
    + "arm,mali-t760"
    + "arm,mali-t820"
    + "arm,mali-t830"
    + "arm,mali-t860"
    + "arm,mali-t880"
  * which must be preceded by one of the following vendor specifics:
    + "allwinner,sun50i-h6-mali"
    + "amlogic,meson-gxm-mali"
    + "samsung,exynos5433-mali"
    + "rockchip,rk3288-mali"
    + "rockchip,rk3399-mali"

- reg : Physical base address of the device and length of the register area.

- interrupts : Contains the three IRQ lines required by Mali Midgard devices.

- interrupt-names : Contains the names of IRQ resources in the order they were
  provided in the interrupts property. Must contain: "job", "mmu", "gpu".


Optional properties:

- clocks : Phandle to clock for the Mali Midgard device.

- clock-names : Specify the names of the clocks specified in clocks
  when multiple clocks are present.
    * core: clock driving the GPU itself (When only one clock is present,
      assume it's this clock.)
    * bus: bus clock for the GPU

- mali-supply : Phandle to regulator for the Mali device. Refer to
  Documentation/devicetree/bindings/regulator/regulator.txt for details.

- operating-points-v2 : Refer to Documentation/devicetree/bindings/opp/opp.txt
  for details.

- #cooling-cells: Refer to Documentation/devicetree/bindings/thermal/thermal.txt
  for details.

- resets : Phandle of the GPU reset line.

Vendor-specific bindings
------------------------

The Mali GPU is integrated very differently from one SoC to
another. In order to accommodate those differences, you have the option
to specify one more vendor-specific compatible, among:

- "allwinner,sun50i-h6-mali"
  Required properties:
  - clocks : phandles to core and bus clocks
  - clock-names : must contain "core" and "bus"
  - resets: phandle to GPU reset line

- "amlogic,meson-gxm-mali"
  Required properties:
  - resets : Should contain phandles of :
    + GPU reset line
    + GPU APB glue reset line

Example for a Mali-T760:

gpu@ffa30000 {
	compatible = "rockchip,rk3288-mali", "arm,mali-t760";
	reg = <0xffa30000 0x10000>;
	interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
		     <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
		     <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
	interrupt-names = "job", "mmu", "gpu";
	clocks = <&cru ACLK_GPU>;
	mali-supply = <&vdd_gpu>;
	operating-points-v2 = <&gpu_opp_table>;
	power-domains = <&power RK3288_PD_GPU>;
	#cooling-cells = <2>;
};

gpu_opp_table: opp_table0 {
	compatible = "operating-points-v2";

	opp@533000000 {
		opp-hz = /bits/ 64 <533000000>;
		opp-microvolt = <1250000>;
	};
	opp@450000000 {
		opp-hz = /bits/ 64 <450000000>;
		opp-microvolt = <1150000>;
	};
	opp@400000000 {
		opp-hz = /bits/ 64 <400000000>;
		opp-microvolt = <1125000>;
	};
	opp@350000000 {
		opp-hz = /bits/ 64 <350000000>;
		opp-microvolt = <1075000>;
	};
	opp@266000000 {
		opp-hz = /bits/ 64 <266000000>;
		opp-microvolt = <1025000>;
	};
	opp@160000000 {
		opp-hz = /bits/ 64 <160000000>;
		opp-microvolt = <925000>;
	};
	opp@100000000 {
		opp-hz = /bits/ 64 <100000000>;
		opp-microvolt = <912500>;
	};
};