diff options
Diffstat (limited to 'resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch')
| -rw-r--r-- | resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch b/resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch new file mode 100644 index 00000000..28bdf451 --- /dev/null +++ b/resources/libreboot/patch/0011-mainboard-lenovo-t400-Increase-backlight-frequency-t.patch @@ -0,0 +1,32 @@ +From f50edfa55ae12a6575c502b00f9f42e283cc9c4b Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Mon, 6 Apr 2015 22:02:18 -0500 +Subject: [PATCH 11/22] mainboard/lenovo/t400: Increase backlight frequency to + reduce flicker + +TEST: Booted Lenovo T400 with LED backlight and verified the absence +of any visible flicker along with proper operation of the brightness +control. + +Change-Id: Ifb485f4aad385aac794978527fd7d246f444ea08 +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/mainboard/lenovo/t400/devicetree.cb | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/src/mainboard/lenovo/t400/devicetree.cb b/src/mainboard/lenovo/t400/devicetree.cb +index cc27d25..6280b91 100644 +--- a/src/mainboard/lenovo/t400/devicetree.cb ++++ b/src/mainboard/lenovo/t400/devicetree.cb +@@ -5,6 +5,8 @@ chip northbridge/intel/gm45 + register "gfx.link_frequency_270_mhz" = "1" + register "gfx.lvds_num_lanes" = "4" + ++ register "gfx.backlight" = "0x620062" ++ + device cpu_cluster 0 on + chip cpu/intel/socket_BGA956 + device lapic 0 on end +-- +1.9.1 + |