Add hbr3_hbr2 voltage and premphasis swing table to support
HBR3 link rate.
Changes in V2:
-- replaced upper case with lower case at hbr3_hbr2 table
Changes in v3:
-- replace space with tab at hbr3_hbr2 table
Signed-off-by: Kuogee Hsieh <khsieh@xxxxxxxxxxxxxx>
Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
---
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..6aaa59c 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)
--
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a Linux Foundation Collaborative Project
