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phy: qcom: Program SSC only if supported by sink 

Some legacy eDP sinks may not support SSC. The support for SSC is
indicated through an opts flag from the controller driver. This
change will enable SSC only if the sink supports it.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20220207161612.REPOST.v1.3.Ie81d594ec2327dae6410db359cc492484bab171f@changeid
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Sankeerth Billakanti 2022-02-07 16:17:04 -08:00 committed by Vinod Koul
parent cc62512c1b
commit 4a4c3cc146
1 changed files with 5 additions and 3 deletions
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8
drivers/phy/qualcomm/phy-qcom-edp.c
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@ -335,9 +335,11 @@ static int qcom_edp_phy_power_on(struct phy *phy)
writel(0x00, edp->tx0 + TXn_LANE_MODE_1);
writel(0x00, edp->tx1 + TXn_LANE_MODE_1);
ret = qcom_edp_configure_ssc(edp);
if (ret)
return ret;
if (edp->dp_opts.ssc) {
ret = qcom_edp_configure_ssc(edp);
if (ret)
return ret;
}
ret = qcom_edp_configure_pll(edp);
if (ret)