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@xxxxxxxxxxxxxx>
> ---
> 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];
> + }
>
