diff options
| author | Dino Li <Dino.Li@ite.com.tw> | 2020-09-08 14:56:10 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-10-08 06:05:02 +0000 |
| commit | 44f69459ded7bd93933a660c1f216f1ad0ae443e (patch) | |
| tree | f57dbe0cb389e82316b82faa99c022ab03d58e9a /chip/it83xx/gpio.c | |
| parent | a54cd39627e62e60af73e2d3ef51504f43d1fb0e (diff) | |
| download | chrome-ec-44f69459ded7bd93933a660c1f216f1ad0ae443e.tar.gz | |
it83xx: enable selecting EC's VCC
The VCC is the power source of EC's GPM0~6, will connect to 1.8v or
3.3v depended on platform design.
This change was made to ensure voltage level setting of GPM0~6 matches
the corresponded VCC level. So we can enable internal pull-up no matter
VCC is connected to 1.8v or 3.3v
BUG=b:168783892
BRANCH=none
TEST=- buildall.
- The level setting is correct on these boards:
asurada, drawcia, and reef_it8320
Change-Id: I4eae368e569987381a0437494262d588436bb011
Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2397931
Reviewed-by: Eric Yilun Lin <yllin@chromium.org>
Diffstat (limited to 'chip/it83xx/gpio.c')
| -rw-r--r-- | chip/it83xx/gpio.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/chip/it83xx/gpio.c b/chip/it83xx/gpio.c index 3dd6d16268..90d8b717b7 100644 --- a/chip/it83xx/gpio.c +++ b/chip/it83xx/gpio.c @@ -667,6 +667,24 @@ void gpio_pre_init(void) IT83XX_GPIO_GCR = 0x06; +#if !defined(CONFIG_IT83XX_VCC_1P8V) && !defined(CONFIG_IT83XX_VCC_3P3V) +#error Please select voltage level of VCC for EC. +#endif + +#if defined(CONFIG_IT83XX_VCC_1P8V) && defined(CONFIG_IT83XX_VCC_3P3V) +#error Must select only one voltage level of VCC for EC. +#endif + /* The power level of GPM6 follows VCC */ + IT83XX_GPIO_GCR29 |= BIT(0); + + /* The power level (VCC) of GPM0~6 is 1.8V */ + if (IS_ENABLED(CONFIG_IT83XX_VCC_1P8V)) + IT83XX_GPIO_GCR30 |= BIT(4); + + /* The power level (VCC) of GPM0~6 is 3.3V */ + if (IS_ENABLED(CONFIG_IT83XX_VCC_3P3V)) + IT83XX_GPIO_GCR30 &= ~BIT(4); + #if IT83XX_USBPD_PHY_PORT_COUNT < CONFIG_USB_PD_ITE_ACTIVE_PORT_COUNT #error "ITE pd active port count should be less than physical port count !" #endif |