[PATCH v2 03/15] phy: qcom-qmp-ufs: Add support for configuring PHY in HS G4 mode

Manivannan Sadhasivam
2022-10-31T18:03:06Z

Add separate tables_hs_g4 instance to allow the PHY driver to configure the
PHY in HS G4 mode. The individual SoC configs need to supply the Rx, Tx and
PCS register setting in tables_hs_g4 and the UFS driver can request the
Hs G4 mode by calling phy_set_mode_ext() with submode set to UFS_HS_G4.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
index 4c6a2b5afc9a..5f2a012707b7 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
@@ -553,6 +553,8 @@ struct qmp_phy_cfg {
const struct qmp_phy_cfg_tables tables;
/* Additional sequence for HS Series B */
const struct qmp_phy_cfg_tables tables_hs_b;
+ /* Additional sequence for HS G4 */
+ const struct qmp_phy_cfg_tables tables_hs_g4;

/* clock ids to be requested */
const char * const *clk_list;
@@ -587,6 +589,7 @@ struct qmp_phy_cfg {
* @pcs_misc: iomapped memory space for lane's pcs_misc
* @qmp: QMP phy to which this lane belongs
* @mode: PHY mode configured by the UFS driver
+ * @submode: PHY submode configured by the UFS driver
*/
struct qmp_phy {
struct phy *phy;
@@ -600,6 +603,7 @@ struct qmp_phy {
void __iomem *pcs_misc;
struct qcom_qmp *qmp;
u32 mode;
+ u32 submode;
};

/**
@@ -993,8 +997,12 @@ static int qmp_ufs_power_on(struct phy *phy)
qmp_ufs_serdes_init(qphy, &cfg->tables_hs_b);

qmp_ufs_lanes_init(qphy, &cfg->tables);
+ if (qphy->submode == UFS_HS_G4)
+ qmp_ufs_lanes_init(qphy, &cfg->tables_hs_g4);

qmp_ufs_pcs_init(qphy, &cfg->tables);
+ if (qphy->submode == UFS_HS_G4)
+ qmp_ufs_pcs_init(qphy, &cfg->tables_hs_g4);

ret = reset_control_deassert(qmp->ufs_reset);
if (ret)
@@ -1083,6 +1091,7 @@ static int qmp_ufs_set_mode(struct phy *phy, enum phy_mode mode, int submode)
struct qmp_phy *qphy = phy_get_drvdata(phy);

qphy->mode = mode;
+ qphy->submode = submode;

return 0;
}
--
2.25.1