diff options
| author | Jitao Shi <jitao.shi@mediatek.com> | 2020-05-07 18:44:19 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-05-11 08:35:34 +0000 |
| commit | 4d472a76c7c57b28c158cb731887a98ae2ff6807 (patch) | |
| tree | ec3514acd78245bcdf1628e1257fc190b003a428 /src/mainboard | |
| parent | ed849ed82c8935c634b681952441ca69c36cdc21 (diff) | |
mb/google/kukui: Fix backlight flash white before show logo
Turn backlight off before panel poweron.
BUG=b:155107047
TEST=make # board = kukui
BRANCH=kukui
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Change-Id: I0f31923bd7c1dfa26d4b1bbd0a230ae400b08ca3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41146
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/kukui/panel_anx7625.c | 5 | ||||
| -rw-r--r-- | src/mainboard/google/kukui/panel_ps8640.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/mainboard/google/kukui/panel_anx7625.c b/src/mainboard/google/kukui/panel_anx7625.c index c75f260e17..b900881bdb 100644 --- a/src/mainboard/google/kukui/panel_anx7625.c +++ b/src/mainboard/google/kukui/panel_anx7625.c @@ -14,6 +14,11 @@ static void power_on_anx7625(void) { + /* Disable backlight before turning on bridge */ + gpio_output(GPIO(PERIPHERAL_EN13), 0); + gpio_output(GPIO(DISP_PWM), 0); + + /* Turn on bridge */ gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 0); gpio_output(GPIO_PP1200_MIPIBRDG_EN, 1); gpio_output(GPIO_VDDIO_MIPIBRDG_EN, 1); diff --git a/src/mainboard/google/kukui/panel_ps8640.c b/src/mainboard/google/kukui/panel_ps8640.c index 43ea68e0cf..1f7506e060 100644 --- a/src/mainboard/google/kukui/panel_ps8640.c +++ b/src/mainboard/google/kukui/panel_ps8640.c @@ -13,6 +13,11 @@ static void power_on_ps8640(void) { + /* Disable backlight before turning on bridge */ + gpio_output(GPIO(PERIPHERAL_EN13), 0); + gpio_output(GPIO(DISP_PWM), 0); + + /* Turn on bridge */ gpio_output(GPIO_MIPIBRDG_RST_L_1V8, 0); gpio_output(GPIO_PP1200_MIPIBRDG_EN, 1); gpio_output(GPIO_VDDIO_MIPIBRDG_EN, 1); |