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Commit 2b372f56 authored by Alexandre Courbot's avatar Alexandre Courbot Committed by Thierry Reding
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ARM: tegra: of: add GK20A device tree binding 



Add the device tree binding documentation for the GK20A GPU used in
Tegra K1 SoCs.

Signed-off-by: default avatarAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
parent 49f2747b

Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt

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NVIDIA GK20A Graphics Processing Unit



Required properties:

- compatible: "nvidia,<chip>-<gpu>"

  Currently recognized values:

  - nvidia,tegra124-gk20a

- reg: Physical base address and length of the controller's registers.

  Must contain two entries:

  - first entry for bar0

  - second entry for bar1

- interrupts: Must contain an entry for each entry in interrupt-names.

  See ../interrupt-controller/interrupts.txt for details.

- interrupt-names: Must include the following entries:

  - stall

  - nonstall

- vdd-supply: regulator for supply voltage.

- clocks: Must contain an entry for each entry in clock-names.

  See ../clocks/clock-bindings.txt for details.

- clock-names: Must include the following entries:

  - gpu

  - pwr

- resets: Must contain an entry for each entry in reset-names.

  See ../reset/reset.txt for details.

- reset-names: Must include the following entries:

  - gpu



Example:



	gpu@0,57000000 {

		compatible = "nvidia,gk20a";

		reg = <0x0 0x57000000 0x0 0x01000000>,

		      <0x0 0x58000000 0x0 0x01000000>;

		interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,

			     <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>;

		interrupt-names = "stall", "nonstall";

		vdd-supply = <&vdd_gpu>;

		clocks = <&tegra_car TEGRA124_CLK_GPU>,

			 <&tegra_car TEGRA124_CLK_PLL_P_OUT5>;

		clock-names = "gpu", "pwr";

		resets = <&tegra_car 184>;

		reset-names = "gpu";

		status = "disabled";

	};