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NVIDIA Tegra Graphics Processing Units
Required properties:
- compatible: "nvidia,<gpu>"
Currently recognized values:
- nvidia,gk20a
- nvidia,gm20b
- 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
If the compatible string is "nvidia,gm20b", then the following clock
is also required:
- ref
- 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
Optional properties:
- iommus: A reference to the IOMMU. See ../iommu/iommu.txt for details.
Example for GK20A:
gpu@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";
iommus = <&mc TEGRA_SWGROUP_GPU>;
status = "disabled";
};
Example for GM20B:
gpu@57000000 {
compatible = "nvidia,gm20b";
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";
clocks = <&tegra_car TEGRA210_CLK_GPU>,
<&tegra_car TEGRA210_CLK_PLL_P_OUT5>,
<&tegra_car TEGRA210_CLK_PLL_G_REF>;
clock-names = "gpu", "pwr", "ref";
resets = <&tegra_car 184>;
reset-names = "gpu";
iommus = <&mc TEGRA_SWGROUP_GPU>;
status = "disabled";
};
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