Add the device tree binding documentation for the GK20A GPU used in
Tegra K1 SoCs.
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
Acked-by: Stephen Warren <swarren@xxxxxxxxxx>
---
.../devicetree/bindings/gpu/nvidia,gk20a.txt | 43 ++++++++++++++++++++++
1 file changed, 43 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
diff --git a/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt b/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
new file mode 100644
index 000000000000..23bfe8e1f7cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
@@ -0,0 +1,43 @@
+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";
+ };
--
2.0.0
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