diff options
| author | Ting Shen <phoenixshen@google.com> | 2020-08-24 18:25:11 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-08-25 07:15:49 +0000 |
| commit | 585918da5621a50a256c8140c55cf7899141e207 (patch) | |
| tree | 201dca47ac7a51b8dace79c1cb08007f536ddd18 /chip/it83xx/clock.c | |
| parent | 9dafd43be882202d413a444a4e193bf5ffcae670 (diff) | |
| download | chrome-ec-585918da5621a50a256c8140c55cf7899141e207.tar.gz | |
it83xx: fix incorrect reset cause when boot from z-state
Add the following features to support z-state for Asurada.
1) Call chip_save_reset_flags() before entering
board_hibernate_late() to make sure the hibernate flag
saved before ec powered off.
2) Handle the second ec reset correctly if
CONFIG_BOARD_RESET_AFTER_POWER_ON enabled.
BUG=b:163963220
TEST=Check the reset cause under following cases:
1) boot from z-state -> reset-pin power-on hibernate initial-pwr
2) boot from cutoff -> reset-pin power-on initial-pwr
3) `ecrst pulse` in cr50 console
-> reset-pin power-on initial-pwr
BRANCH=none
Signed-off-by: Ting Shen <phoenixshen@google.com>
Change-Id: I176075ea2b3f6b2abbfe22e47f3019ee23af57a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2371751
Tested-by: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>
Diffstat (limited to 'chip/it83xx/clock.c')
| -rw-r--r-- | chip/it83xx/clock.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/chip/it83xx/clock.c b/chip/it83xx/clock.c index c3fc6ffbf4..7c3bf25844 100644 --- a/chip/it83xx/clock.c +++ b/chip/it83xx/clock.c @@ -488,8 +488,14 @@ void __enter_hibernate(uint32_t seconds, uint32_t microseconds) * may not return at all. On those boards, power to the EC is likely * being turn off entirely. */ - if (board_hibernate_late) + if (board_hibernate_late) { + /* + * Set reset flag in case board_hibernate_late() doesn't + * return. + */ + chip_save_reset_flags(EC_RESET_FLAG_HIBERNATE); board_hibernate_late(); + } if (seconds || microseconds) { /* At least 1 ms for hibernate. */ |