Based on kernel version 4.3. Page generated on 2015-11-02 12:45 EST.
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 };