[PATCH v5 07/10] scsi: ufs: ufs-qcom: Set initial PHY gear to max HS gear for HW ver 5 and newer

Can Guo
2023-11-23T08:52:31Z

Set the initial PHY gear to max HS gear for hosts with HW ver 5 and newer.

This patch is not changing any functionalities or logic but only a
preparation patch for the next patch in this series.

Signed-off-by: Can Guo <quic_cang@quicinc.com>
---
drivers/ufs/host/ufs-qcom.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 6756f8d..7bbccf4 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1067,6 +1067,20 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba)
hba->quirks |= UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH;
}

+static void ufs_qcom_set_phy_gear(struct ufs_qcom_host *host)
+{
+ struct ufs_host_params *host_params = &host->host_params;
+
+ host->phy_gear = host_params->hs_tx_gear;
+
+ /*
+ * Power up the PHY using the minimum supported gear (UFS_HS_G2).
+ * Switching to max gear will be performed during reinit if supported.
+ */
+ if (host->hw_ver.major < 0x5)
+ host->phy_gear = UFS_HS_G2;
+}
+
static void ufs_qcom_set_host_params(struct ufs_hba *hba)
{
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
@@ -1303,6 +1317,7 @@ static int ufs_qcom_init(struct ufs_hba *hba)
ufs_qcom_set_caps(hba);
ufs_qcom_advertise_quirks(hba);
ufs_qcom_set_host_params(hba);
+ ufs_qcom_set_phy_gear(host);

err = ufs_qcom_ice_init(host);
if (err)
@@ -1320,12 +1335,6 @@ static int ufs_qcom_init(struct ufs_hba *hba)
dev_warn(dev, "%s: failed to configure the testbus %d\n",
__func__, err);

- /*
- * Power up the PHY using the minimum supported gear (UFS_HS_G2).
- * Switching to max gear will be performed during reinit if supported.
- */
- host->phy_gear = UFS_HS_G2;
-
return 0;

out_variant_clear:
--
2.7.4