mb/google/glados: Use ACPI brightness controls
Enables ACPI backlight controls under Windows.
Test: build/boot chell variant, verify screen backlight
controls available and functional under Windows 10.
Change-Id: Ida0102ac828254ae195528a8f1de078abed4a491
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40121
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb
index e9c1cac..4e85e21 100644
--- a/src/mainboard/google/glados/devicetree.cb
+++ b/src/mainboard/google/glados/devicetree.cb
@@ -1,5 +1,8 @@
chip soc/intel/skylake
+ # IGD Displays
+ register "gfx" = "GMA_STATIC_DISPLAYS(0)"
+
register "gpu_pp_up_delay_ms" = "200"
register "gpu_pp_down_delay_ms" = " 50"
register "gpu_pp_cycle_delay_ms" = "500"