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| author | Subhash Jadavani <subhashj@codeaurora.org> | 2017-04-04 19:32:13 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-12 10:41:17 (GMT) |
| commit | bedc629494cdd55d1ef7d6d8bff294f8b07b919b (patch) | |
| tree | 139b2b4bf6255621b1966fe9ad4c7eb5928b5047 /drivers/scsi/ufs/ufs-qcom.h | |
| parent | 5c6b8ad1ab251d14545853b9bb4b3282d182aa67 (diff) | |
| download | linux-bedc629494cdd55d1ef7d6d8bff294f8b07b919b.tar.xz | |
scsi: ufs: add quirk to increase host PA_SaveConfigTime
[ Upstream commit 56d4a1866d748732fd8d690b2c2156bbc9c9eb02 ]
The maximum value PA_SaveConfigTime is 250 (10us) but this is not enough
for some vendors. Gear switch from PWM to HS may fail even with this
max. PA_SaveConfigTime. Gear switch can be issued by host controller as
an error recovery and any software delay will not help on this case so
we need to increase PA_SaveConfigTime to >32us as per vendor
recommendation. This change adds a quirk to increase the
PA_SaveConfigTime parameter.
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi/ufs/ufs-qcom.h')
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h index a19307a..fe517cd 100644 --- a/drivers/scsi/ufs/ufs-qcom.h +++ b/drivers/scsi/ufs/ufs-qcom.h @@ -142,6 +142,7 @@ enum ufs_qcom_phy_init_type { UFS_QCOM_DBG_PRINT_TEST_BUS_EN) /* QUniPro Vendor specific attributes */ +#define PA_VS_CONFIG_REG1 0x9000 #define DME_VS_CORE_CLK_CTRL 0xD002 /* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */ #define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8) |