diff options
| author | Subhash Jadavani <subhashj@codeaurora.org> | 2015-07-08 16:00:37 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:00:09 -0700 |
| commit | a4948782a575143cc9d6af9eff96c318880d117d (patch) | |
| tree | e74dffb872fe1461b544513fd2ab722f86c989c0 /include/uapi/linux | |
| parent | db99db80a5c6c97e5a225f837330483476028611 (diff) | |
scsi: ufs: change device rails hpm mode ramp up sequence
When we are resuming the UFS device rails in HPM mode, we are first
powering on the VCC rail while VCCQ and VCCQ2 rails still being in LPM
mode. Some UFS devices may take VCC on event as hint that host wants
UFS device to be resumed and may start drawing more power from the
VCCQ/VCCQ2 rails (while they are still in LPM mode) causing voltage drop
on these rails. This change fixes this issue by bringing VCCQ & VCCQ2 rails
out of LPM before powering on VCC rail.
Change-Id: I950591d2a571257e08d7697e2b33dd5968f7333f
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'include/uapi/linux')
0 files changed, 0 insertions, 0 deletions