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samsung/lumpy: add cpu/gpu pwm backlight register values 

Required for functional internal display on lumpy using
libgfxinit or Tianocore GOP driver

Test: boot/build lumpy, verify internal display functional
prior to OS driver loading.

Change-Id: If62a4ae58082548e8a645d1a2de40705bdd2946e
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Matt DeVillier 2018-12-31 15:07:42 -06:00 committed by Nico Huber
parent e55e61f889
commit eaea9c987c
1 changed files with 4 additions and 0 deletions
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4
src/mainboard/samsung/lumpy/devicetree.cb
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@ -14,6 +14,10 @@ chip northbridge/intel/sandybridge
register "gpu_panel_power_backlight_on_delay" = "2100" # T5: 210ms
register "gpu_panel_power_backlight_off_delay" = "2100" # TD: 210ms
# Set backlight PWM values
register "gpu_cpu_backlight" = "0x000001e8"
register "gpu_pch_backlight" = "0x03d00000"
register "max_mem_clock_mhz" = "666"
device cpu_cluster 0 on