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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/video/intel-gma.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/video/intel-gma.txt b/doc/device-tree-bindings/video/intel-gma.txt new file mode 100644 index 0000000..914be4f --- /dev/null +++ b/doc/device-tree-bindings/video/intel-gma.txt @@ -0,0 +1,40 @@ +Intel GMA Bindings +================== + +This is the Intel Graphics Media Accelerator. This binding supports selection +of display parameters only. + + +Required properties: + - compatible : "intel,gma"; + +Optional properties: + - intel,dp-hotplug : values for digital port hotplug, one cell per value for + ports B, C and D + - intel,panel-port-select : output port to use: 0=LVDS 1=DP_B 2=DP_C 3=DP_D + - intel,panel-power-cycle-delay : T4 time sequence (6 = 500ms) + + The following delays are in units of 0.1ms: + - intel,panel-power-up-delay : T1+T2 time sequence + - intel,panel-power-down-delay : T3 time sequence + - intel,panel-power-backlight-on-delay : T5 time sequence + - intel,panel-power-backlight-off-delay : Tx time sequence + + - intel,cpu-backlight : Value for CPU Backlight PWM + - intel,pch-backlight : Value for PCH Backlight PWM + +Example +------- + +gma { + compatible = "intel,gma"; + intel,dp_hotplug = <0 0 0x06>; + intel,panel-port-select = <1>; + intel,panel-power-cycle-delay = <6>; + intel,panel-power-up-delay = <2000>; + intel,panel-power-down-delay = <500>; + intel,panel-power-backlight-on-delay = <2000>; + intel,panel-power-backlight-off-delay = <2000>; + intel,cpu-backlight = <0x00000200>; + intel,pch-backlight = <0x04000000>; +}; |