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| author | Keith Short <keithshort@chromium.org> | 2019-12-06 16:15:10 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-12-09 22:08:07 +0000 |
| commit | 0f1b8b632422baf788f47f2fc99330fbf438468c (patch) | |
| tree | 3bb0c052f7fa10cdf6fc26b173f3f809431f8f30 | |
| parent | 2affbe3cede4946af052f0901af1a37b103660e1 (diff) | |
| download | chrome-ec-0f1b8b632422baf788f47f2fc99330fbf438468c.tar.gz | |
volteer: Delay assertion of SYS_PWROK
Delay the assertion of the PCH_SYS_PWROK signal by 50ms after assertion
of PG_EC_ALL_SYS_PWRGD is detected.
BUG=b:144478941, b:144867384
BRANCH=none
TEST=make buildall
TEST=instrument Ice Lake power module, confirm 50ms delay from
PG_EC_ALL_SYS_PWRGD to PCH_SYS_PWROK
Change-Id: Ib6a04cc5e1b27f3c53b5d8b00da7f0653225b0e4
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1956148
Reviewed-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Abe Levkoy <alevkoy@chromium.org>
| -rw-r--r-- | baseboard/volteer/baseboard.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/baseboard/volteer/baseboard.c b/baseboard/volteer/baseboard.c index ee0765f65a..a34c0e446f 100644 --- a/baseboard/volteer/baseboard.c +++ b/baseboard/volteer/baseboard.c @@ -535,3 +535,14 @@ void board_overcurrent_event(int port, int is_overcurrented) { /* TODO: b/140561826 - check correct operation for Volteer */ } + +/* + * Delay assertion of PCH_SYS_PWROK from assertion of the PG_EC_ALL_SYS_PWRGD + * input. This ensures PCH_SYS_PWROK is asserted only after all rails have + * stabilized. See b/144478941 for full discussion. + */ +__override void board_icl_tgl_all_sys_pwrgood(void) +{ + msleep(50); +} + |