linux/drivers/scsi/ufs
Subhash Jadavani 69d72ac836 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.

Reviewed-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-08 17:30:00 -05:00
..
Kconfig scsi: ufs: Kconfig fix 2016-09-29 21:57:08 -04:00
Makefile ufs: add TC G210 pci driver 2016-07-12 23:16:31 -04:00
tc-dwc-g210-pci.c ufs: add TC G210 pci driver 2016-07-12 23:16:31 -04:00
tc-dwc-g210-pltfrm.c ufs: add TC G210 platform driver 2016-07-12 23:16:31 -04:00
tc-dwc-g210.c scsi: ufs: Add missing header dependencies for tc-dwc-g210 2016-09-04 01:28:08 -04:00
tc-dwc-g210.h ufs: add support for Synopsys G210 Test Chip 2016-07-12 23:16:31 -04:00
ufs-qcom.c scsi: ufshcd: Fix possible unclocked register access 2016-11-08 17:29:47 -05:00
ufs-qcom.h scsi: ufs-qcom: add printouts of testbus debug registers 2016-03-14 21:04:45 -04:00
ufs.h scsi: ufs: fix bugs related to null pointer access and array size 2016-11-08 17:29:58 -05:00
ufs_quirks.h scsi: ufs: Enable no vccq quirk for skhynix device 2016-09-28 01:08:05 -04:00
ufshcd-dwc.c ufs: Adding license info do tc-dwc-g210 and ufshcd-dwc to enable loadable module 2016-07-12 23:16:31 -04:00
ufshcd-dwc.h ufs: add support for DesignWare Controller 2016-07-12 23:16:31 -04:00
ufshcd-pci.c scsi: ufshcd: release resources if probe fails 2016-11-08 17:30:00 -05:00
ufshcd-pltfrm.c scsi: ufshcd: release resources if probe fails 2016-11-08 17:30:00 -05:00
ufshcd-pltfrm.h scsi: ufs: make the UFS variant a platform device 2015-11-09 18:00:02 -05:00
ufshcd.c scsi: ufs: change device rails hpm mode ramp up sequence 2016-11-08 17:30:00 -05:00
ufshcd.h scsi: ufshcd: Fix possible unclocked register access 2016-11-08 17:29:47 -05:00
ufshci-dwc.h ufs: add support for DesignWare Controller 2016-07-12 23:16:31 -04:00
ufshci.h ufs: add link status to ufshci 2016-07-12 23:16:31 -04:00
unipro.h ufs: add unipro attributes 2016-07-12 23:16:31 -04:00