Hello build bot (Jenkins), Paul Menzel, Duncan Laurie, Angel Pons, Alexander Couzens, Patrick Rudolph,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/39769
to look at the new patch set (#7).
Change subject: nb/intel/haswell: Implement proper backlight PWM config ......................................................................
nb/intel/haswell: Implement proper backlight PWM config
Further backport the backlight-PWM handling from Skylake. Beside configuring the PWM frequency in Hz, we also use the PCH's logic for the brightness setting via BLM_PCH_OVERRIDE_ENABLE. Linux would toggle it anyway and that might confuse our ASL code.
We assume that the 183Hz value that was set before for Slippy variants was overridden by Linux with the 200Hz VBT value, like it was for the Broadwell Chromebooks. So we set 200Hz for them in the devicetrees. The calculated value for the T440p of 220Hz seems sane and also matches the VBT.
Change-Id: I17dfe1a3610d5e2918c617cf5d10896692fdccb3 Signed-off-by: Nico Huber nico.h@gmx.de --- M src/drivers/intel/gma/i915_reg.h M src/mainboard/google/slippy/variants/falco/devicetree.cb M src/mainboard/google/slippy/variants/leon/devicetree.cb M src/mainboard/google/slippy/variants/peppy/devicetree.cb M src/mainboard/google/slippy/variants/wolf/devicetree.cb M src/mainboard/lenovo/t440p/devicetree.cb M src/northbridge/intel/haswell/chip.h M src/northbridge/intel/haswell/gma.c 8 files changed, 49 insertions(+), 24 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/39769/7