mb/google/zork: Configure GPIO_40 as drive low in sleep path

This change configures GPIO_40 (NVME_AUX_RESET_L) as drive low in
sleep path so that the PERST# to NVMe device keeps asserted until
coreboot reconfigures it as high on S3 resume path. This is similar to
the earlier change for PCIE_RST1_L but helps platforms that use
NVME_AUX_RESET_L instead of PCIE_RST1_L. GPIO_40 lives in S5 domain,
hence it retains state across S3 entry/exit.

Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ie79e946eee8f393863630226ae2183e653030415
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2261117
Reviewed-by: Aaron Durbin <adurbin@google.com>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42935
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh 2020-06-23 11:11:30 -07:00
parent 1247616304
commit 7340efcf19
1 changed files with 2 additions and 0 deletions

View File

@ -36,6 +36,8 @@ static const struct soc_amd_gpio gpio_sleep_table[] = {
PAD_GPO(GPIO_5, LOW),
/* PCIE_RST1_L */
PAD_GPO(GPIO_27, LOW),
/* NVME_AUX_RESET_L */
PAD_GPO(GPIO_40, LOW),
/* EN_PWR_CAMERA */
PAD_GPO(GPIO_76, LOW),
};