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>
---
drivers/ufs/host/ufs-qcom.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 1a93351fb70e..b5d7904597d9 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -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)
--
2.50.1