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mb/google/nissa: Skip locking for GPP_F14 GPIO 

There is an existing issue for nissa boards where wake up from
RTC wake is not working during suspend_stress_test.

This issue was root caused to the patch which was setting GPE_EN
bits for the GPIOs before locking.
Reference: https://review.coreboot.org/c/coreboot/+/64089

Later issue was found to be with GPP_F14 configuration for nissa
boards. When coreboot skips setting GPE_EN bit for GPP_F14, RTC
wake works properly. Another way to make it work is to skip locking
GPP_F14 GPIO to allow kernel to configure it properly.

This patch skips the locking for GPP_F14 to allow kernel to
configure it later. This fixes the issue of RTC wake not working.

Note: This patch provides workaround for the existing issue and
BUG will be closed once actual reason is identified and proper
fix is available.

BUG=b:234097956
BRANCH=None
TEST=RTC wake works on Nivviks board with the patch.

Change-Id: Ie8091ab8acf2b3f064cb79bdf4700f6b4c1674a5
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65086
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
This commit is contained in:
Maulik V Vaghela 2022-06-10 19:55:24 +05:30 committed by Felix Held
parent efe749f380
commit 58c063ebd0
1 changed files with 1 additions and 1 deletions
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2
src/mainboard/google/brya/variants/baseboard/nissa/gpio.c
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@ -236,7 +236,7 @@ static const struct pad_config gpio_table[] = {
/* F13 : GSXSLOAD ==> SOC_PEN_DETECT_R_ODL */
PAD_CFG_GPI_INT_LOCK(GPP_F13, NONE, EDGE_BOTH, LOCK_CONFIG),
/* F14 : GSXDIN ==> TCHPAD_INT_ODL */
PAD_CFG_GPI_IRQ_WAKE_LOCK(GPP_F14, NONE, LEVEL, INVERT, LOCK_CONFIG),
PAD_CFG_GPI_IRQ_WAKE(GPP_F14, NONE, PWROK, LEVEL, INVERT),
/* F15 : GSXSRESET# ==> SOC_PEN_DETECT_ODL */
PAD_CFG_GPI_SCI_HIGH_LOCK(GPP_F15, NONE, EDGE_BOTH, LOCK_CONFIG),
/* F16 : NC */