[PATCH v5 04/23] phy: qcom-qmp-ufs: Add support for configuring PHY in HS Series B mode

Manivannan Sadhasivam
2022-12-22T14:10:52Z

Add separate tables_hs_b instance to allow the PHY driver to configure the
PHY in HS Series B mode. The individual SoC configs need to supply the
serdes register setting in tables_hs_b and the UFS driver can request the
Series B mode by calling phy_set_mode() with mode set to PHY_MODE_UFS_HS_B.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
index 516027e356f0..2d5dd336aeb2 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
@@ -547,6 +547,8 @@ struct qmp_phy_cfg {

/* Main init sequence for PHY blocks - serdes, tx, rx, pcs */
const struct qmp_phy_cfg_tbls tbls;
+ /* Additional sequence for HS Series B */
+ const struct qmp_phy_cfg_tbls tbls_hs_b;

/* clock ids to be requested */
const char * const *clk_list;
@@ -580,6 +582,7 @@ struct qmp_ufs {
struct reset_control *ufs_reset;

struct phy *phy;
+ u32 mode;
};

static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
@@ -841,6 +844,8 @@ static void qmp_ufs_pcs_init(struct qmp_ufs *qmp, const struct qmp_phy_cfg_tbls
static void qmp_ufs_init_registers(struct qmp_ufs *qmp, const struct qmp_phy_cfg *cfg)
{
qmp_ufs_serdes_init(qmp, &cfg->tbls);
+ if (qmp->mode == PHY_MODE_UFS_HS_B)
+ qmp_ufs_serdes_init(qmp, &cfg->tbls_hs_b);
qmp_ufs_lanes_init(qmp, &cfg->tbls);
qmp_ufs_pcs_init(qmp, &cfg->tbls);
}
@@ -1011,9 +1016,19 @@ static int qmp_ufs_disable(struct phy *phy)
return qmp_ufs_exit(phy);
}

+static int qmp_ufs_set_mode(struct phy *phy, enum phy_mode mode, int submode)
+{
+ struct qmp_ufs *qmp = phy_get_drvdata(phy);
+
+ qmp->mode = mode;
+
+ return 0;
+}
+
static const struct phy_ops qcom_qmp_ufs_phy_ops = {
.power_on = qmp_ufs_enable,
.power_off = qmp_ufs_disable,
+ .set_mode = qmp_ufs_set_mode,
.owner = THIS_MODULE,
};

--
2.25.1