Re: [PATCH v5 07/10] phy: qualcomm: qmp-combo: Update QMP PHY with Glymur settings

[Wesley Cheng]

On 10/24/2025 3:04 AM, Abel Vesa wrote:
> On 25-10-06 15:19:59, Wesley Cheng wrote:
> > For SuperSpeed USB to work properly, there is a set of HW settings that
> > need to be programmed into the USB blocks within the QMP PHY.  Ensure that
> > these settings follow the latest settings mentioned in the HW programming
> > guide.  The QMP USB PHY on Glymur is a USB43 based PHY that will have some
> > new ways to define certain registers, such as the replacement of TXA/RXA
> > and TXB/RXB register sets.  This was replaced with the LALB register set.
> >
> > There are also some PHY init updates to modify the PCS MISC register space.
> > Without these, the QMP PHY PLL locking fails.
> >
> > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Wesley Cheng <wesley.cheng@xxxxxxxxxxxxxxxx>
> > ---
> >   drivers/phy/qualcomm/phy-qcom-qmp-combo.c     | 314 ++++++++-
> >   .../phy/qualcomm/phy-qcom-qmp-pcs-aon-v8.h    |  17 +
> >   .../phy/qualcomm/phy-qcom-qmp-pcs-misc-v8.h   |  12 +
> >   .../qualcomm/phy-qcom-qmp-qserdes-lalb-v8.h   | 639 ++++++++++++++++++
> >   .../phy/qualcomm/phy-qcom-qmp-usb43-pcs-v8.h  |  33 +
> >   .../phy-qcom-qmp-usb43-qserdes-com-v8.h       | 224 ++++++
> >   drivers/phy/qualcomm/phy-qcom-qmp.h           |   2 +
> >   7 files changed, 1240 insertions(+), 1 deletion(-)
> >   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-pcs-aon-v8.h
> >   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-pcs-misc-v8.h
> >   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-qserdes-lalb-v8.h
> >   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-usb43-pcs-v8.h
> >   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-usb43-qserdes-com-v8.h
> >
> > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> > index 1caa1fb6a8c7..8216820e388f 100644
> > --- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
> > +++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
>
> [...]
>
> > +static const struct qmp_phy_cfg glymur_usb3dpphy_cfg = {
> > +	.offsets		= &qmp_combo_usb43dp_offsets_v8,
> > +
> > +	.serdes_tbl		= glymur_usb43dp_serdes_tbl,
> > +	.serdes_tbl_num		= ARRAY_SIZE(glymur_usb43dp_serdes_tbl),
> > +	.tx_tbl			= glymur_usb43dp_lalb_tbl,
> > +	.tx_tbl_num		= ARRAY_SIZE(glymur_usb43dp_lalb_tbl),
> > +	.pcs_tbl		= glymur_usb43dp_pcs_tbl,
> > +	.pcs_tbl_num		= ARRAY_SIZE(glymur_usb43dp_pcs_tbl),
> > +	.pcs_usb_tbl		= glymur_usb43dp_pcs_usb_tbl,
> > +	.pcs_usb_tbl_num	= ARRAY_SIZE(glymur_usb43dp_pcs_usb_tbl),
> > +	.pcs_misc_tbl		= glymur_usb43dp_pcs_misc_tbl,
> > +	.pcs_misc_tbl_num	= ARRAY_SIZE(glymur_usb43dp_pcs_misc_tbl),
> > +
> > +	.dp_serdes_tbl		= qmp_v6_n4_dp_serdes_tbl,
> > +	.dp_serdes_tbl_num	= ARRAY_SIZE(qmp_v6_n4_dp_serdes_tbl),
> > +	.dp_tx_tbl		= qmp_v6_n4_dp_tx_tbl,
> > +	.dp_tx_tbl_num		= ARRAY_SIZE(qmp_v6_n4_dp_tx_tbl),
> > +
> > +	.serdes_tbl_rbr		= qmp_v6_n4_dp_serdes_tbl_rbr,
> > +	.serdes_tbl_rbr_num	= ARRAY_SIZE(qmp_v6_n4_dp_serdes_tbl_rbr),
> > +	.serdes_tbl_hbr		= qmp_v6_n4_dp_serdes_tbl_hbr,
> > +	.serdes_tbl_hbr_num	= ARRAY_SIZE(qmp_v6_n4_dp_serdes_tbl_hbr),
> > +	.serdes_tbl_hbr2	= qmp_v6_n4_dp_serdes_tbl_hbr2,
> > +	.serdes_tbl_hbr2_num	= ARRAY_SIZE(qmp_v6_n4_dp_serdes_tbl_hbr2),
> > +	.serdes_tbl_hbr3	= qmp_v6_n4_dp_serdes_tbl_hbr3,
> > +	.serdes_tbl_hbr3_num	= ARRAY_SIZE(qmp_v6_n4_dp_serdes_tbl_hbr3),
> > +
> > +	.swing_hbr_rbr		= &qmp_dp_v6_voltage_swing_hbr_rbr,
> > +	.pre_emphasis_hbr_rbr	= &qmp_dp_v6_pre_emphasis_hbr_rbr,
> > +	.swing_hbr3_hbr2	= &qmp_dp_v5_voltage_swing_hbr3_hbr2,
> > +	.pre_emphasis_hbr3_hbr2	= &qmp_dp_v5_pre_emphasis_hbr3_hbr2,
> > +
> > +	.dp_aux_init		= qmp_v4_dp_aux_init,
> > +	.configure_dp_tx	= qmp_v4_configure_dp_tx,
> > +	.configure_dp_phy	= qmp_v4_configure_dp_phy,
> > +	.calibrate_dp_phy	= qmp_v4_calibrate_dp_phy,
>
> So I see you are adding the DP related config here as well, but it is
> definitely not compatible with v6 N4. I'm assyuming you picked v6 N4 as a default
> just to allow the USB part work for now, right ?
>
> I don't suppose we can drop the DP related config from this patch and
> still have the USB part working, right?
>
> Otherwise, we need to mention the fact that even though the DP part
> is also being added, it is broken.

Hi Abel,

That is correct.  Without these defined, the USB path won't work, and 
we'll need to supplement this if we wanted to add DP support.  Hence, 
why I didn't add any mention of DP altmode in the commit text.  I can 
clarify that we added DP placeholders if that makes it more clear in the 
commit text.

Thanks
Wesley CHeng