Commit 88f4d3aa authored by Ram Kumar Dwivedi's avatar Ram Kumar Dwivedi Committed by Martin K. Petersen
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scsi: ufs: ufs-qcom: Add support for limiting HS gear and rate 



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: default avatarRam Kumar Dwivedi <quic_rdwivedi@quicinc.com>
Reviewed-by: default avatarAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 1cc577e6

drivers/ufs/host/ufs-qcom.c

+13 −0
Original line number Diff line number Diff line
@@ -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)