diff options
| author | Wei Li <liwei213@huawei.com> | 2018-11-08 09:08:29 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-08 21:22:52 -0500 |
| commit | 8e4829c6f7470722c1f5a1dc5769ebe09ef036d6 (patch) | |
| tree | 47d388c02b777ba93c860fecf3a5be23df8a3e5a /drivers/scsi/ufs/ufs_quirks.h | |
| parent | f2ffd4e5bc7b629b312be48fbe3c3a2afbd67e4a (diff) | |
scsi: ufs: Fix hynix ufs bug with quirk on hi36xx SoC
Hynix ufs has deviations on hi36xx platform which will result in ufs bursts
transfer failures.
To fix the problem, the Hynix device must set the register
VS_DebugSaveConfigTime to 0x10, which will set time reference for
SaveConfigTime is 250 ns. The time reference for SaveConfigTime is 40 ns by
default.
This patch is necessary to boot on HiKey960 boards that use Hynix UFS chips
(H28U62301AMR model: hB8aL1).
Cc: Vinayak Holikatti <vinholikatti@gmail.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Wei Li <liwei213@huawei.com>
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[jstultz: Forward ported from older code, slight tweak to commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufs_quirks.h')
| -rw-r--r-- | drivers/scsi/ufs/ufs_quirks.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h index 71f73d1d1ad1..5d2dfdb41a6f 100644 --- a/drivers/scsi/ufs/ufs_quirks.h +++ b/drivers/scsi/ufs/ufs_quirks.h @@ -131,4 +131,10 @@ struct ufs_dev_fix { */ #define UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME (1 << 8) +/* + * Some UFS devices require VS_DebugSaveConfigTime is 0x10, + * enabling this quirk ensure this. + */ +#define UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME (1 << 9) + #endif /* UFS_QUIRKS_H_ */ |