diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index c34d716aa64c..2276b0a78268 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -161,7 +161,7 @@ analogix_dp_set_lane_lane_pre_emphasis(struct analogix_dp_device *dp,
 
 static int analogix_dp_link_start(struct analogix_dp_device *dp)
 {
-	u8 buf[4];
+	u8 buf[4], dpcd = 0;
 	int lane, lane_count, pll_tries, retval;
 
 	lane_count = dp->link_train.lane_count;
@@ -183,6 +183,30 @@ static int analogix_dp_link_start(struct analogix_dp_device *dp)
 	if (retval < 0)
 		return retval;
 
+	/* possibly enable downspread on the sink */
+	retval = drm_dp_dpcd_readb(&dp->aux, DP_MAX_DOWNSPREAD, &dpcd);
+	if (retval < 0)
+		return retval;
+
+	if (dpcd & DP_MAX_DOWNSPREAD_0_5) {
+		DRM_DEV_INFO(dp->dev, "Enable downspread on the sink\n");
+
+		analogix_dp_ssc_enable(dp);
+
+		retval = drm_dp_dpcd_writeb(&dp->aux, DP_DOWNSPREAD_CTRL,
+					    DP_SPREAD_AMP_0_5);
+		if (retval < 0)
+			return retval;
+	} else {
+		DRM_DEV_INFO(dp->dev, "Disable downspread on the sink\n");
+
+		analogix_dp_ssc_disable(dp);
+
+		retval = drm_dp_dpcd_writeb(&dp->aux, DP_DOWNSPREAD_CTRL, 0);
+		if (retval < 0)
+			return retval;
+	}
+
 	/* Set TX pre-emphasis to minimum */
 	for (lane = 0; lane < lane_count; lane++)
 		analogix_dp_set_lane_lane_pre_emphasis(dp,
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index 7d566136d384..85b2dde04755 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -251,4 +251,6 @@ void analogix_dp_set_video_format(struct analogix_dp_device *dp);
 void analogix_dp_video_bist_enable(struct analogix_dp_device *dp);
 ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
 			     struct drm_dp_aux_msg *msg);
+void analogix_dp_ssc_enable(struct analogix_dp_device *dp);
+void analogix_dp_ssc_disable(struct analogix_dp_device *dp);
 #endif /* _ANALOGIX_DP_CORE_H */
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index a0c3247c0aaa..ad5c6505884f 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -1076,3 +1076,29 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
 
 	return num_transferred;
 }
+
+void analogix_dp_ssc_enable(struct analogix_dp_device *dp)
+{
+	u8 reg;
+
+	/* 4500ppm */
+	writel(0x19, dp->reg_base + ANALOIGX_DP_SSC_REG);
+	/*
+	 * To apply updated SSC parameters into SSC operation,
+	 * firmware must disable and enable this bit.
+	 */
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	reg |= SSC_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	reg &= ~SSC_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+void analogix_dp_ssc_disable(struct analogix_dp_device *dp)
+{
+	u8 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	reg |= SSC_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
index bbb312fc8094..0598ec649a1a 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
@@ -46,6 +46,7 @@
 #define ANALOGIX_DP_PLL_REG_4			0x9ec
 #define ANALOGIX_DP_PLL_REG_5			0xa00
 
+#define ANALOIGX_DP_SSC_REG			0x104
 #define ANALOGIX_DP_PD				0x12c
 
 #define ANALOGIX_DP_LANE_MAP			0x35C