Commit 3f2ec77c authored by Kuogee Hsieh's avatar Kuogee Hsieh Committed by Vinod Koul
Browse files

phy: qcom-qmp: add hbr3_hbr2 voltage and premphasis swing table 



Add hbr3_hbr2 voltage and premphasis swing table to support
HBR3 link rate.

Signed-off-by: default avatarKuogee Hsieh <khsieh@codeaurora.org>
Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1615914761-12300-1-git-send-email-khsieh@codeaurora.org


Fixes: 52e013d0 ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 446c200e

drivers/phy/qualcomm/phy-qcom-qmp.c

+21 −2
Original line number Diff line number Diff line
@@ -3375,6 +3375,20 @@ 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 },
@@ -3410,8 +3424,13 @@ static void qcom_qmp_phy_configure_dp_tx(struct qmp_phy *qphy) 
		drvr_en = 0x10;

	}



	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)