diff options
| author | Jimmy Zhang <jimmzhang@nvidia.com> | 2014-04-21 15:58:45 -0700 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2014-12-19 23:46:50 +0100 |
| commit | 75f701799a789b3d80eb90a441539be55fd0f5b2 (patch) | |
| tree | 5c38f50432a3a3005a5a35003f35d2f2bd9d9565 /src/mainboard/google/nyan/devicetree.cb | |
| parent | 8548a4888a479d0d6ad715967589003ce220a484 (diff) | |
| download | coreboot-75f701799a789b3d80eb90a441539be55fd0f5b2.tar.xz | |
nyan*: Add fast link training functions
Some panels (including those on Big DVT) cannot work fine without link training
before sending the video signals, especially multi-lane Full HD panels. We need
to use the fast link training functions from kernel to support them.
BRANCH=Nyan
BUG=chrome-os-partner:28128, chrome-os-partner:28129
TEST=tested on nyan, nyan_big dvt.
Vince verified on Full HD panels.
Signed-off-by: Jimmy Zhang <jimmzhang@nvidia.com>
Original-Change-Id: Ifde8daf0ebdc6fb407610d3563f3311b2a72dbc4
Original-Reviewed-on: https://chromium-review.googlesource.com/196162
Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Original-Commit-Queue: Hung-Te Lin <hungte@chromium.org>
Original-Tested-by: Hung-Te Lin <hungte@chromium.org>
(cherry picked from commit 992132ff3431fc7abba10cc8e910e36d4f3a3f7a)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I5ed091ae7a872fd674ab21f9f80267052fcd24b1
Reviewed-on: http://review.coreboot.org/7864
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/google/nyan/devicetree.cb')
| -rw-r--r-- | src/mainboard/google/nyan/devicetree.cb | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/google/nyan/devicetree.cb b/src/mainboard/google/nyan/devicetree.cb index e7ae54d52b..8919941360 100644 --- a/src/mainboard/google/nyan/devicetree.cb +++ b/src/mainboard/google/nyan/devicetree.cb @@ -88,7 +88,7 @@ chip soc/nvidia/tegra124 register "link_bw" = "10" # "10" is defined as SOR_LINK_SPEED_G2_7 in sor.h - register "drive_current" = "0x13131313" - register "preemphasis" = "0x00000000" + register "drive_current" = "0x40404040" + register "preemphasis" = "0x0f0f0f0f" register "postcursor" = "0" end |