From a5c417ecd8174b0c8bfaa3f89acbad97efc9de34 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Wed, 14 Jan 2015 17:36:08 -0800 Subject: [PATCH] samus: Set current backlight PWM value With recent changes in the 3.14 kernel and the switch to not using X the panel backlight is not geting turned on until chrome is started which means the splash screen is not visible. If we set the backlight PWM in coreboot then it will at least turn on for the early boot process. BUG=chrome-os-partner:31549 BRANCH=samus TEST=boot on samus in normal mode and see the boot splash logo Change-Id: I81e6b90617acb181b4de3365f8f56ec3b846b78b Signed-off-by: Stefan Reinauer Original-Commit-Id: f850fe3faff268a64f18e6bd176ec1126b921e3b Original-Change-Id: I622bef8af9bb6b753fe228b33ecdc4aae76af131 Original-Signed-off-by: Duncan Laurie Original-Reviewed-on: https://chromium-review.googlesource.com/240853 Original-Reviewed-by: Shawn N Reviewed-on: http://review.coreboot.org/9491 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/mainboard/google/samus/devicetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mainboard/google/samus/devicetree.cb b/src/mainboard/google/samus/devicetree.cb index 93ae51b8ff..a511c27e9a 100644 --- a/src/mainboard/google/samus/devicetree.cb +++ b/src/mainboard/google/samus/devicetree.cb @@ -11,7 +11,7 @@ chip soc/intel/broadwell # Set backlight PWM values for eDP register "gpu_cpu_backlight" = "0x00000200" - register "gpu_pch_backlight" = "0x04000000" + register "gpu_pch_backlight" = "0x04000200" # Enable Panel and configure power delays register "gpu_panel_port_select" = "1" # eDP