| Message ID | 1613604031-27798-1-git-send-email-khsieh@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | [1/2] phy/qualcomm: add hbr3_hbr2 voltage and premphasis swing table | expand |
Quoting Kuogee Hsieh (2021-02-17 15:20:31) > Add hbr3_hbr2 voltage and premphasis swing table to support > HBR3 link rate. > > Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> > --- > drivers/phy/qualcomm/phy-qcom-qmp.c | 23 +++++++++++++++++++++-- > 1 file changed, 21 insertions(+), 2 deletions(-) > > diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c > index 0939a9e..c920143 100644 > --- a/drivers/phy/qualcomm/phy-qcom-qmp.c > +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c > @@ -2965,6 +2965,20 @@ static void qcom_qmp_phy_dp_aux_init(struct qmp_phy *qphy) > qphy->pcs + QSERDES_V3_DP_PHY_AUX_INTERRUPT_MASK); > } > > +static const u8 qmp_dp_v3_pre_emphasis_hbr3_hbr2[4][4] = { > + { 0x00, 0x0C, 0x15, 0x1A }, > + { 0x02, 0x0E, 0x16, 0xFF }, > + { 0x02, 0x11, 0xFF, 0xFF }, > + { 0x04, 0xFF, 0xFF, 0xFF } Lowercase hex please. > +}; > + > +static const u8 qmp_dp_v3_voltage_swing_hbr3_hbr2[4][4] = { > + { 0x02, 0x12, 0x16, 0x1A }, > + { 0x09, 0x19, 0x1F, 0xFF }, > + { 0x10, 0x1F, 0xFF, 0xFF }, > + { 0x1F, 0xFF, 0xFF, 0xFF } > +}; Lowercase hex please. > + > static const u8 qmp_dp_v3_pre_emphasis_hbr_rbr[4][4] = { > { 0x00, 0x0c, 0x14, 0x19 }, > { 0x00, 0x0b, 0x12, 0xff }, > @@ -3000,8 +3014,13 @@ static void qcom_qmp_phy_configure_dp_tx(struct qmp_phy *qphy) > drvr_en = 0x10; > } > > - voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level]; > - pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level]; > + if (dp_opts->link_rate <= 2700) { > + voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level]; > + pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level]; > + } else { > + voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr3_hbr2[v_level][p_level]; > + pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr3_hbr2[v_level][p_level]; > + } >
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c index 0939a9e..c920143 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c @@ -2965,6 +2965,20 @@ static void qcom_qmp_phy_dp_aux_init(struct qmp_phy *qphy) qphy->pcs + QSERDES_V3_DP_PHY_AUX_INTERRUPT_MASK); } +static const u8 qmp_dp_v3_pre_emphasis_hbr3_hbr2[4][4] = { + { 0x00, 0x0C, 0x15, 0x1A }, + { 0x02, 0x0E, 0x16, 0xFF }, + { 0x02, 0x11, 0xFF, 0xFF }, + { 0x04, 0xFF, 0xFF, 0xFF } +}; + +static const u8 qmp_dp_v3_voltage_swing_hbr3_hbr2[4][4] = { + { 0x02, 0x12, 0x16, 0x1A }, + { 0x09, 0x19, 0x1F, 0xFF }, + { 0x10, 0x1F, 0xFF, 0xFF }, + { 0x1F, 0xFF, 0xFF, 0xFF } +}; + static const u8 qmp_dp_v3_pre_emphasis_hbr_rbr[4][4] = { { 0x00, 0x0c, 0x14, 0x19 }, { 0x00, 0x0b, 0x12, 0xff }, @@ -3000,8 +3014,13 @@ static void qcom_qmp_phy_configure_dp_tx(struct qmp_phy *qphy) drvr_en = 0x10; } - voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level]; - pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level]; + if (dp_opts->link_rate <= 2700) { + voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr_rbr[v_level][p_level]; + pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr_rbr[v_level][p_level]; + } else { + voltage_swing_cfg = qmp_dp_v3_voltage_swing_hbr3_hbr2[v_level][p_level]; + pre_emphasis_cfg = qmp_dp_v3_pre_emphasis_hbr3_hbr2[v_level][p_level]; + } /* TODO: Move check to config check */ if (voltage_swing_cfg == 0xFF && pre_emphasis_cfg == 0xFF)
Add hbr3_hbr2 voltage and premphasis swing table to support HBR3 link rate. Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> --- drivers/phy/qualcomm/phy-qcom-qmp.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-)