[coreboot-gerrit] New patch to review for coreboot: mb/lenovo/x200: Add panel power sequence values

[Nico Huber (nico.h@gmx.de)]

Nico Huber (nico.h at gmx.de) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12886

-gerrit

commit 9acf33a1dd62afa757452de7764072289bd56911
Author: Nico Huber <nico.h at gmx.de>
Date:   Sat Jan 9 23:33:30 2016 +0100

    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 at gmx.de>
---
 src/mainboard/lenovo/x200/devicetree.cb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mainboard/lenovo/x200/devicetree.cb b/src/mainboard/lenovo/x200/devicetree.cb
index 36a1939..92c41d7 100644
--- a/src/mainboard/lenovo/x200/devicetree.cb
+++ b/src/mainboard/lenovo/x200/devicetree.cb
@@ -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"