diff options
| author | Martin Roth <martinroth@chromium.org> | 2020-10-30 16:43:31 -0600 |
|---|---|---|
| committer | Paul Fagerburg <pfagerburg@chromium.org> | 2020-11-17 16:54:16 +0000 |
| commit | d5c3d9ca82c89830f33ec62dcb15c50ca9ae2523 (patch) | |
| tree | 67fe7b48d3febc183485a401f0af5d6424907430 /Documentation/arch/riscv | |
| parent | 6aaf7db7195659fd2484d60a457275c7eb4b14c7 (diff) | |
mb/google/zork: Power off fingerprint sensor on shutdown
When the system shuts down, turn the fingerprint sensor off. This sets
the GPIOs correctly for the next boot. The fingerprint sensor was
previously left on, and was just powering down when the rails went low.
On suspend, the fingerprint sensor stays awake and puts itself in a low
powerstate mode based on the SLP_Sx_L pin states.
BUG=b:171837716
TEST=Fingerprint sensor still works after S3, GPIO state on the boot
following a shutdown is low.
BRANCH=Zork
Signed-off-by: Martin Roth <martinroth@chromium.org>
Change-Id: I3837b58372d8f4a504535e76bd21c667d68f8995
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47311
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'Documentation/arch/riscv')
0 files changed, 0 insertions, 0 deletions