Re: [PATCH v2 02/15] phy: qcom-qmp-ufs: Add support for configuring PHY in HS Series B mode

Manivannan Sadhasivam
2022-11-22T16:21:31Z

On Fri, Nov 11, 2022 at 12:31:15PM +0530, Vinod Koul wrote:
> On 31-10-22, 23:32, Manivannan Sadhasivam wrote:
> > 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>
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > ---
> > drivers/phy/qualcomm/phy-qcom-qmp-ufs.c | 18 ++++++++++++++++++
> > 1 file changed, 18 insertions(+)
> >
> > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> > index cdfda4e6d575..4c6a2b5afc9a 100644
> > --- a/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> > +++ b/drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
> > @@ -20,6 +20,8 @@
> > #include <linux/reset.h>
> > #include <linux/slab.h>
> >
> > +#include <ufs/unipro.h>
> > +
> > #include <dt-bindings/phy/phy.h>
> >
> > #include "phy-qcom-qmp.h"
> > @@ -549,6 +551,8 @@ struct qmp_phy_cfg {
> >
> > /* Main init sequence for PHY blocks - serdes, tx, rx, pcs */
> > const struct qmp_phy_cfg_tables tables;
> > + /* Additional sequence for HS Series B */
> > + const struct qmp_phy_cfg_tables tables_hs_b;
>
> what am i missing, where was tables_hs_b added?
>

This patch adds the infrastructure for HS_B mode. The actual table is added in
patch 5/15.

Thanks,
Mani

> >
> > /* clock ids to be requested */
> > const char * const *clk_list;
> > @@ -582,6 +586,7 @@ struct qmp_phy_cfg {
> > * @rx2: iomapped memory space for second lane's rx (in dual lane PHYs)
> > * @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
> > */
> > struct qmp_phy {
> > struct phy *phy;
> > @@ -594,6 +599,7 @@ struct qmp_phy {
> > void __iomem *rx2;
> > void __iomem *pcs_misc;
> > struct qcom_qmp *qmp;
> > + u32 mode;
> > };
> >
> > /**
> > @@ -983,6 +989,8 @@ static int qmp_ufs_power_on(struct phy *phy)
> > int ret;
> >
> > qmp_ufs_serdes_init(qphy, &cfg->tables);
> > + if (qphy->mode == PHY_MODE_UFS_HS_B)
> > + qmp_ufs_serdes_init(qphy, &cfg->tables_hs_b);
> >
> > qmp_ufs_lanes_init(qphy, &cfg->tables);
> >
> > @@ -1070,6 +1078,15 @@ 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_phy *qphy = phy_get_drvdata(phy);
> > +
> > + qphy->mode = mode;
> > +
> > + return 0;
> > +}
> > +
> > static int qmp_ufs_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
> > {
> > struct qcom_qmp *qmp = dev_get_drvdata(dev);
> > @@ -1105,6 +1122,7 @@ static int qmp_ufs_clk_init(struct device *dev, const struct qmp_phy_cfg *cfg)
> > static const struct phy_ops qcom_qmp_ufs_ops = {
> > .power_on = qmp_ufs_enable,
> > .power_off = qmp_ufs_disable,
> > + .set_mode = qmp_ufs_set_mode,
> > .owner = THIS_MODULE,
> > };
> >
> > --
> > 2.25.1
>
> --
> ~Vinod

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