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[REPOST,v1,3/3] phy: qcom: Program SSC only if supported by sink

Message ID 20220207161612.REPOST.v1.3.Ie81d594ec2327dae6410db359cc492484bab171f@changeid
State Accepted
Commit 4a4c3cc146b12fea3a25748c43abfb461978bcee
Headers show
Series Add support for eDP PHY on SC7280 platform | expand

Commit Message

Doug Anderson Feb. 8, 2022, 12:17 a.m. UTC 
From: Sankeerth Billakanti <quic_sbillaka@quicinc.com>

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>
---

 drivers/phy/qualcomm/phy-qcom-edp.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c
index 21cafbb623f8..cacd32f6e0cc 100644
--- a/drivers/phy/qualcomm/phy-qcom-edp.c
+++ b/drivers/phy/qualcomm/phy-qcom-edp.c
@@ -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)