intel-gma.txt 1.2 KB

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