| Simon Glass | effcf06 | 2014-11-14 20:56:36 -0700 | [diff] [blame^] | 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 | }; |