[deliverable/linux.git] / Documentation / devicetree / bindings / drm / msm / gpu.txt

Qualcomm adreno/snapdragon GPU

Required properties:
- compatible: "qcom,adreno-3xx"
- reg: Physical base address and length of the controller's registers.
- interrupts: The interrupt signal from the gpu.
- clocks: device clocks
  See ../clocks/clock-bindings.txt for details.
- clock-names: the following clocks are required:
  * "core_clk"
  * "iface_clk"
  * "mem_iface_clk"
- qcom,chipid: gpu chip-id.  Note this may become optional for future
  devices if we can reliably read the chipid from hw
- qcom,gpu-pwrlevels: list of operating points
  - compatible: "qcom,gpu-pwrlevels"
  - for each qcom,gpu-pwrlevel:
    - qcom,gpu-freq: requested gpu clock speed
    - NOTE: downstream android driver defines additional parameters to
      configure memory bandwidth scaling per OPP.

Example:

/ {
	...

	gpu: qcom,kgsl-3d0@4300000 {
		compatible = "qcom,adreno-3xx";
		reg = <0x04300000 0x20000>;
		reg-names = "kgsl_3d0_reg_memory";
		interrupts = <GIC_SPI 80 0>;
		interrupt-names = "kgsl_3d0_irq";
		clock-names =
		    "core_clk",
		    "iface_clk",
		    "mem_iface_clk";
		clocks =
		    <&mmcc GFX3D_CLK>,
		    <&mmcc GFX3D_AHB_CLK>,
		    <&mmcc MMSS_IMEM_AHB_CLK>;
		qcom,chipid = <0x03020100>;
		qcom,gpu-pwrlevels {
			compatible = "qcom,gpu-pwrlevels";
			qcom,gpu-pwrlevel@0 {
				qcom,gpu-freq = <450000000>;
			};
			qcom,gpu-pwrlevel@1 {
				qcom,gpu-freq = <27000000>;
			};
		};
	};
};
Commit	Line	Data
41e69778 RC	1	Qualcomm adreno/snapdragon GPU
	2
	3	Required properties:
	4	- compatible: "qcom,adreno-3xx"
	5	- reg: Physical base address and length of the controller's registers.
	6	- interrupts: The interrupt signal from the gpu.
	7	- clocks: device clocks
	8	See ../clocks/clock-bindings.txt for details.
	9	- clock-names: the following clocks are required:
	10	* "core_clk"
	11	* "iface_clk"
	12	* "mem_iface_clk"
	13	- qcom,chipid: gpu chip-id. Note this may become optional for future
	14	devices if we can reliably read the chipid from hw
	15	- qcom,gpu-pwrlevels: list of operating points
	16	- compatible: "qcom,gpu-pwrlevels"
	17	- for each qcom,gpu-pwrlevel:
	18	- qcom,gpu-freq: requested gpu clock speed
	19	- NOTE: downstream android driver defines additional parameters to
	20	configure memory bandwidth scaling per OPP.
	21
	22	Example:
	23
	24	/ {
	25	...
	26
	27	gpu: qcom,kgsl-3d0@4300000 {
	28	compatible = "qcom,adreno-3xx";
	29	reg = <0x04300000 0x20000>;
	30	reg-names = "kgsl_3d0_reg_memory";
	31	interrupts = <GIC_SPI 80 0>;
	32	interrupt-names = "kgsl_3d0_irq";
	33	clock-names =
	34	"core_clk",
	35	"iface_clk",
	36	"mem_iface_clk";
	37	clocks =
	38	<&mmcc GFX3D_CLK>,
	39	<&mmcc GFX3D_AHB_CLK>,
	40	<&mmcc MMSS_IMEM_AHB_CLK>;
	41	qcom,chipid = <0x03020100>;
	42	qcom,gpu-pwrlevels {
	43	compatible = "qcom,gpu-pwrlevels";
	44	qcom,gpu-pwrlevel@0 {
	45	qcom,gpu-freq = <450000000>;
	46	};
	47	qcom,gpu-pwrlevel@1 {
	48	qcom,gpu-freq = <27000000>;
	49	};
	50	};
	51	};
	52	};