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| author | Can Guo <cang@codeaurora.org> | 2020-02-10 19:40:49 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-02-12 19:42:37 -0500 |
| commit | 09f17791e640dcb8b29cc0b3279e73f48985c2be (patch) | |
| tree | 81223302e3d92ee9b5e5e74e6461031c9fb701a2 /drivers/scsi/ufs/ufs.h | |
| parent | c63d6099a7959ecc919b2549dc6b71f53521f819 (diff) | |
| download | lwn-09f17791e640dcb8b29cc0b3279e73f48985c2be.tar.gz lwn-09f17791e640dcb8b29cc0b3279e73f48985c2be.zip | |
scsi: ufs: Add dev ref clock gating wait time support
In UFS version 3.0, a newly added attribute bRefClkGatingWaitTime defines
the minimum time for which the reference clock is required by device during
transition to LS-MODE or HIBERN8 state. Make this change to reflect the new
requirement by adding delays before turning off the clock.
Link: https://lore.kernel.org/r/1581392451-28743-7-git-send-email-cang@codeaurora.org
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufs.h')
| -rw-r--r-- | drivers/scsi/ufs/ufs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index cfe380348bf0..990cb48e2403 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -167,6 +167,7 @@ enum attr_idn { QUERY_ATTR_IDN_FFU_STATUS = 0x14, QUERY_ATTR_IDN_PSA_STATE = 0x15, QUERY_ATTR_IDN_PSA_DATA_SIZE = 0x16, + QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME = 0x17, }; /* Descriptor idn for Query requests */ @@ -534,6 +535,8 @@ struct ufs_dev_info { u16 wmanufacturerid; /*UFS device Product Name */ u8 *model; + u16 wspecversion; + u32 clk_gating_wait_us; }; /** |