CHERRY-PICK: CHROMIUM: arm64: dts: mt8173-elm: Add ps8640_fixed_1v2 ramp delay
This fixed regulator actually takes 2 ms to ramp up when enabled.
If we don't wait for the regulator to settle and take the PS8640
out of reset too early, sometimes the bridge will fail to start
properly, and the eDP panel will stay black.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
BUG=chrome-os-partner:53825
TEST=boot to ui on elm
TEST=Use magnet over F1 to repeatedly trigger lid close/open events
Note: magnet must stay over magnet for ~0.5 to avoid triggering
crbug.com/620208
=> display comes on every time
Change-Id: I7685ea804b49f7d22239957bcd2869088f0c98a4
Reviewed-on: https://chromium-review.googlesource.com/352491
Commit-Ready: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: cawa cheng <cawa.cheng@mediatek.com>
Tested-by: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: jitao shi <jitao.shi@mediatek.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: jitao shi <jitao.shi@mediatek.com>
(cherry picked from commit c2671409d6754d36783cf00682c870220d545d83)
Reviewed-on: https://chromium-review.googlesource.com/355891
Reviewed-by: Hsu Wei-Cheng <mojahsu@chromium.org>
Commit-Queue: Hsu Wei-Cheng <mojahsu@chromium.org>
Tested-by: Hsu Wei-Cheng <mojahsu@chromium.org>
1 file changed
