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mb/lenovo/x200: Add panel power sequence values 

Values are taken from the vendor BIOS of my X200s. Notable effect:
Stops display from flashing during native graphics init / Linux mode
setting.

Change-Id: Ie5d9efc010a78dd46317b6bbdb7bfacc2c9d2cbf
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/12886
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Nico Huber 2016-01-09 23:33:30 +01:00 committed by Martin Roth
parent b851cc69d6
commit 3cbe62fe37
1 changed files with 5 additions and 0 deletions
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5
src/mainboard/lenovo/x200/devicetree.cb
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@ -3,6 +3,11 @@ chip northbridge/intel/gm45
register "gfx.ndid" = "3"
register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
register "gpu_panel_power_up_delay" = "250" # T1+T2: 25ms
register "gpu_panel_power_down_delay" = "250" # T3: 25ms
register "gpu_panel_power_backlight_on_delay" = "2500" # T5: 250ms
register "gpu_panel_power_backlight_off_delay" = "2500" # Tx: 250ms
register "gpu_panel_power_cycle_delay" = "3" # T4: 200ms
register "gfx.use_spread_spectrum_clock" = "1"
register "gfx.link_frequency_270_mhz" = "1"