diff options
| author | Stanley Wu <stanley1.wu@lcfc.corp-partner.google.com> | 2022-12-13 16:58:26 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-12-15 13:36:18 +0000 |
| commit | 8d728c2090614511a0586194bccc30d1e628fe0a (patch) | |
| tree | 480232ba4771442950a9ca94692405d67222337a | |
| parent | 5dfec718290609dc0fd0331070ad703107e0b7e7 (diff) | |
mb/google/nissa/var/pujjo: Modify WWAN warm reset sequence
pujjo support FM101 WWAN, add delay of FCPO# to meet warm reset toff
minimum 500ms requirement.
BUG=b:260380268
TEST=Build and boot on pujjo
Signed-off-by: Stanley Wu <stanley1.wu@lcfc.corp-partner.google.com>
Change-Id: I63e599e76bd8a15ca44717823411576fa4df1c26
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70720
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
| -rw-r--r-- | src/mainboard/google/brya/variants/pujjo/gpio.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/variants/pujjo/gpio.c b/src/mainboard/google/brya/variants/pujjo/gpio.c index 390ff166af..f104b92e25 100644 --- a/src/mainboard/google/brya/variants/pujjo/gpio.c +++ b/src/mainboard/google/brya/variants/pujjo/gpio.c @@ -33,8 +33,14 @@ static const struct pad_config override_gpio_table[] = { static const struct pad_config early_gpio_table[] = { /* A13 : GPP_A13 ==> GSC_SOC_INT_ODL */ PAD_CFG_GPI_APIC(GPP_A13, NONE, PLTRST, LEVEL, INVERT), + /* + * WWAN_EN is asserted in ramstage to meet the 500 ms warm reset toff + * requirement. WWAN_EN must be asserted before WWAN_RST_L is released + * (with min delay 0 ms), so this works as long as the pin used for + * WWAN_EN comes before the pin used for WWAN_RST_L. + */ /* D6 : SRCCLKREQ1# ==> WWAN_EN */ - PAD_CFG_GPO(GPP_D6, 1, DEEP), + PAD_CFG_GPO(GPP_D6, 0, DEEP), /* E12 : THC0_SPI1_IO1 ==> SOC_WP_OD */ PAD_CFG_GPI_GPIO_DRIVER(GPP_E12, NONE, DEEP), /* F12 : WWAN_RST_L */ |