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scsi: ufs: ufs-qcom: Add support for limiting HS gear and rate

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Add support to limit Tx/Rx gear and rate during UFS initialization based
on DT property.

Also update the phy_gear to ensure PHY calibrations align with the
required gear and rate.

Signed-off-by: Ram Kumar Dwivedi <quic_rdwivedi@quicinc.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ram Kumar Dwivedi
2025-09-24 22:27:47 -04:00
committed by Martin K. Petersen
parent 1cc577e64d
commit 88f4d3aa29
1 changed files with 13 additions and 0 deletions
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drivers/ufs/host/ufs-qcom.c
+13
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@@ -1092,6 +1092,18 @@ static void ufs_qcom_set_phy_gear(struct ufs_qcom_host *host)
}
}
static void ufs_qcom_parse_gear_limits(struct ufs_hba *hba)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
struct ufs_host_params *host_params = &host->host_params;
u32 hs_gear_old = host_params->hs_tx_gear;
ufshcd_parse_gear_limits(hba, host_params);
if (host_params->hs_tx_gear != hs_gear_old) {
host->phy_gear = host_params->hs_tx_gear;
}
}
static void ufs_qcom_set_host_params(struct ufs_hba *hba)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
@@ -1333,6 +1345,7 @@ static int ufs_qcom_init(struct ufs_hba *hba)
ufs_qcom_advertise_quirks(hba);
ufs_qcom_set_host_params(hba);
ufs_qcom_set_phy_gear(host);
ufs_qcom_parse_gear_limits(hba);
err = ufs_qcom_ice_init(host);
if (err)