diff options
| -rw-r--r-- | src/mainboard/google/veyron_danger/board.h | 1 | ||||
| -rw-r--r-- | src/mainboard/google/veyron_danger/mainboard.c | 13 |
2 files changed, 13 insertions, 1 deletions
diff --git a/src/mainboard/google/veyron_danger/board.h b/src/mainboard/google/veyron_danger/board.h index 10bcf459b2..a2f400091d 100644 --- a/src/mainboard/google/veyron_danger/board.h +++ b/src/mainboard/google/veyron_danger/board.h @@ -25,6 +25,7 @@ #define GPIO_BACKLIGHT GPIO(7, A, 3) #define GPIO_RESET GPIO(0, B, 5) +#define GPIO_LCDC_BL GPIO(7, A, 7) void setup_chromeos_gpios(void); diff --git a/src/mainboard/google/veyron_danger/mainboard.c b/src/mainboard/google/veyron_danger/mainboard.c index b664d55804..9bb5cb1a59 100644 --- a/src/mainboard/google/veyron_danger/mainboard.c +++ b/src/mainboard/google/veyron_danger/mainboard.c @@ -93,6 +93,17 @@ static void configure_vop(void) /* lcdc(vop) iodomain select 1.8V */ write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 0)); + /* + * BL_EN gates VCC_LCD. This might be changed in future revisions + * of the board so that the display can be stablized before we + * turn on the backlight. + * + * To minimize display corruption, turn off LCDC_BL before + * powering on the backlight. + */ + gpio_output(GPIO_BACKLIGHT, 1); /* BL_EN */ + gpio_output(GPIO_LCDC_BL, 0); + rk808_configure_switch(2, 1); /* VCC18_LCD (HDMI_AVDD_1V8) */ rk808_configure_ldo(7, 1000); /* VDD10_LCD (HDMI_AVDD_1V0) */ rk808_configure_switch(1, 1); /* VCC33_LCD */ @@ -135,5 +146,5 @@ void lb_board(struct lb_header *header) void mainboard_power_on_backlight(void) { - gpio_output(GPIO_BACKLIGHT, 1); /* BL_EN */ + gpio_output(GPIO_LCDC_BL, 1); } |