diff options
| author | Avri Altman <avri.altman@wdc.com> | 2024-05-30 17:25:08 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-05-30 20:34:38 -0400 |
| commit | e75ff63300c5e8fac31649f438ebad6af88e0032 (patch) | |
| tree | cae0fb15c07911958a1e8e09a5b783facba64383 /drivers/ufs/core | |
| parent | 9ec54934ce857065e38523a2010e20182e76f515 (diff) | |
scsi: ufs: core: Maximum RTT supported by the host driver
Allow platform vendors to take precedence having their own max rtt support.
This makes sense because the host controller's nortt characteristic may
vary among vendors.
while at it, set this value for Mediatek, as requested by Peter -
https://lore.kernel.org/all/0a57d6bab739d6a10584f2baba115d00dfc9c94c.camel@mediatek.com/
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20240530142510.734-3-avri.altman@wdc.com
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs/core')
| -rw-r--r-- | drivers/ufs/core/ufshcd.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index dda6d7e44436..41bf2e249c83 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8131,6 +8131,8 @@ static void ufshcd_set_rtt(struct ufs_hba *hba) struct ufs_dev_info *dev_info = &hba->dev_info; u32 rtt = 0; u32 dev_rtt = 0; + int host_rtt_cap = hba->vops && hba->vops->max_num_rtt ? + hba->vops->max_num_rtt : hba->nortt; /* RTT override makes sense only for UFS-4.0 and above */ if (dev_info->wspecversion < 0x400) @@ -8146,7 +8148,8 @@ static void ufshcd_set_rtt(struct ufs_hba *hba) if (dev_rtt != DEFAULT_MAX_NUM_RTT) return; - rtt = min_t(int, dev_info->rtt_cap, hba->nortt); + rtt = min_t(int, dev_info->rtt_cap, host_rtt_cap); + if (rtt == dev_rtt) return; |