diff options
| author | Ed Tsai <ed.tsai@mediatek.com> | 2026-03-10 03:52:28 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-03-11 04:34:59 +0300 |
| commit | 6ab94d0194ddca662da69cf42b98dcf74690ed92 (patch) | |
| tree | 33dfbecd2dc0a3a55270504b7ffaf66794af1f43 /include | |
| parent | 096cd6b7adf21791827a045d464242d93a6fd54e (diff) | |
| download | linux-6ab94d0194ddca662da69cf42b98dcf74690ed92.tar.xz | |
scsi: ufs: core: Add quirks for VCC ramp-up delay
On some platforms, the VCC regulator has a slow ramp-up time. Add a delay
after enabling VCC to ensure voltage has fully stabilized before we enable
the clocks.
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ed Tsai <ed.tsai@mediatek.com>
Link: https://patch.msgid.link/20260310005230.4001904-4-ed.tsai@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/ufs/ufshcd.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 182f301c11e7..cb6f1537a3f3 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -690,6 +690,12 @@ enum ufshcd_quirks { * because it causes link startup to become unreliable. */ UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE = 1 << 26, + + /* + * On some platforms, the VCC regulator has a slow ramp-up time. Add a + * delay after enabling VCC to ensure it's stable. + */ + UFSHCD_QUIRK_VCC_ON_DELAY = 1 << 27, }; enum ufshcd_caps { |