From 6f7d621678f22133c9825565fedc77d19198b08c Mon Sep 17 00:00:00 2001 From: Kein Yuan Date: Thu, 1 May 2014 20:20:06 -0700 Subject: [PATCH] Rambi: Set SOC_DISP_ON as GPIO to avoid LCD_VCC glitch To avoid LCD_VCC glitch on cold reset, set SOC_DISP_ON as GPIO output high. After gfx initialize was done set it to native funtion 2. BUG=chrome-os-partner:25159 BRANCH=firmware-rambi-5216.B TEST=Tested on Rambi and squawks, no LCD_VCC glitch anymore. Change-Id: If16af498e910a8da1d77a9a66456eb767286a61a Original-Change-Id: Icf62588fa0338f89fafb3fe9246c26f16bcdaa60 Signed-off-by: Kein Yuan Reviewed-on: https://chromium-review.googlesource.com/197985 Reviewed-by: Aaron Durbin Reviewed-by: Shawn Nematbakhsh Commit-Queue: Shawn Nematbakhsh Tested-by: Shawn Nematbakhsh --- src/mainboard/google/rambi/gpio.c | 2 +- src/mainboard/google/rambi/mainboard.c | 10 ++++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/src/mainboard/google/rambi/gpio.c b/src/mainboard/google/rambi/gpio.c index a3c0d2d243..77f56f7c94 100644 --- a/src/mainboard/google/rambi/gpio.c +++ b/src/mainboard/google/rambi/gpio.c @@ -33,7 +33,7 @@ static const struct soc_gpio_map gpncore_gpio_map[] = { GPIO_FUNC2, /* S0_NC06 - EDP_HPD_L */ GPIO_INPUT, /* S0_NC07 - DDI1_DDCDATA - STRAP */ GPIO_NC, /* S0_NC08 - NC */ - GPIO_FUNC2, /* S0_NC09 - SOC_DISP_ON_C */ + GPIO_OUT_HIGH, /* S0_NC09 - SOC_DISP_ON_C */ GPIO_FUNC2, /* S0_NC10 - SOC_EDP_BLON_C */ GPIO_FUNC2, /* S0_NC11 - SOC_DPST_PWM_C */ GPIO_NC, /* S0_NC12 - NC */ diff --git a/src/mainboard/google/rambi/mainboard.c b/src/mainboard/google/rambi/mainboard.c index 03a75a3d58..45ab9e8fe4 100644 --- a/src/mainboard/google/rambi/mainboard.c +++ b/src/mainboard/google/rambi/mainboard.c @@ -36,6 +36,8 @@ #include #include "ec.h" #include "onboard.h" +#include +#include void mainboard_suspend_resume(void) { @@ -175,3 +177,11 @@ struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, }; +static void edp_vdden_cb(void *unused) +{ + ncore_select_func(SOC_DDI1_VDDEN_PAD, PAD_FUNC2); +} + +BOOT_STATE_INIT_ENTRIES(edp_vdden_bscb) = { + BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, edp_vdden_cb, NULL), +};