[coreboot-gerrit] New patch to review for coreboot: lenovo/t60: Enable brightness controls (native graphics)

Francis Rowe (info@gluglug.org.uk) gerrit at coreboot.org
Mon Jun 15 21:02:05 CEST 2015

Francis Rowe (info at gluglug.org.uk) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10552


commit ea22ceb65d9c5122aafb31513d386deb1a018110
Author: Francis Rowe <info at gluglug.org.uk>
Date:   Mon Jun 15 19:59:46 2015 +0100

    lenovo/t60: Enable brightness controls (native graphics)
    This makes the Fn Home/End keys work for controlling the
    brightness of the display. Value obtained by reading
    BLC_PWM_CTL when running the VBIOS (option ROM).
    On i945 legacy brightness control is enabled by a single
    bit in BLC_PWM_CTL. It's bit 16 or bit 0 (the other one
    reverses polarity). Set the bit to enable brightness
    Change-Id: I22e261f2ce28ec81cd208a73e6311ec67146eb72
    Signed-off-by: Francis Rowe <info at gluglug.org.uk>
 src/mainboard/lenovo/t60/devicetree.cb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mainboard/lenovo/t60/devicetree.cb b/src/mainboard/lenovo/t60/devicetree.cb
index fdced26..5f90a73 100644
--- a/src/mainboard/lenovo/t60/devicetree.cb
+++ b/src/mainboard/lenovo/t60/devicetree.cb
@@ -27,7 +27,7 @@ chip northbridge/intel/i945
 	register "gpu_hotplug" = "0x00000220"
 	register "gpu_lvds_use_spread_spectrum_clock" = "1"
 	register "gpu_lvds_is_dual_channel" = "1"
-	register "gpu_backlight" = "0x1280128"
+	register "gpu_backlight" = "0x58BF58BE"
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_mFCPGA478

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