1 Intel GMA Bindings 2 ================== 3 4 This is the Intel Graphics Media Accelerator. This binding supports selection 5 of display parameters only. 6 7 8 Required properties: 9 - compatible : "intel,gma"; 10 11 Optional properties: 12 - intel,dp-hotplug : values for digital port hotplug, one cell per value for 13 ports B, C and D 14 - intel,panel-port-select : output port to use: 0=LVDS 1=DP_B 2=DP_C 3=DP_D 15 - intel,panel-power-cycle-delay : T4 time sequence (6 = 500ms) 16 17 The following delays are in units of 0.1ms: 18 - intel,panel-power-up-delay : T1+T2 time sequence 19 - intel,panel-power-down-delay : T3 time sequence 20 - intel,panel-power-backlight-on-delay : T5 time sequence 21 - intel,panel-power-backlight-off-delay : Tx time sequence 22 23 - intel,cpu-backlight : Value for CPU Backlight PWM 24 - intel,pch-backlight : Value for PCH Backlight PWM 25 26 Example 27 ------- 28 29 gma { 30 compatible = "intel,gma"; 31 intel,dp_hotplug = <0 0 0x06>; 32 intel,panel-port-select = <1>; 33 intel,panel-power-cycle-delay = <6>; 34 intel,panel-power-up-delay = <2000>; 35 intel,panel-power-down-delay = <500>; 36 intel,panel-power-backlight-on-delay = <2000>; 37 intel,panel-power-backlight-off-delay = <2000>; 38 intel,cpu-backlight = <0x00000200>; 39 intel,pch-backlight = <0x04000000>; 40 }; 41
