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| author | Stanley Chu <stanley.chu@mediatek.com> | 2020-02-20 14:48:48 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-02-29 02:41:52 +0100 |
| commit | b3222c326c965f94b2e8e8ac73dc395ca82cd088 (patch) | |
| tree | b7d371769a4addebb2c926ec5dbdef1d640d0acc /drivers/scsi/ufs/ufs-mediatek.h | |
| parent | scsi: ufs-qcom: Apply QUIRK_HOST_TACTIVATE for WDC UFS devices (diff) | |
| download | linux-b3222c326c965f94b2e8e8ac73dc395ca82cd088.tar.xz linux-b3222c326c965f94b2e8e8ac73dc395ca82cd088.zip | |
scsi: ufs: ufs-mediatek: add waiting time for reference clock
Some delays may be required either after gating or before ungating
reference clock for device according to vendor requirements.
Note that in UFS 3.0, the delay time after gating reference
clock can be defined by attribute bRefClkGatingWaitTime. Use the
formal value instead if it can be queried from device.
Link: https://lore.kernel.org/r/20200220134848.8807-2-stanley.chu@mediatek.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/ufs/ufs-mediatek.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-mediatek.h b/drivers/scsi/ufs/ufs-mediatek.h index 492414e5f481..4c787b99fe41 100644 --- a/drivers/scsi/ufs/ufs-mediatek.h +++ b/drivers/scsi/ufs/ufs-mediatek.h @@ -92,6 +92,8 @@ struct ufs_mtk_host { struct ufs_hba *hba; struct phy *mphy; bool ref_clk_enabled; + u16 ref_clk_ungating_wait_us; + u16 ref_clk_gating_wait_us; }; #endif /* !_UFS_MEDIATEK_H */ |