diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile b/drivers/gpu/drm/hisilicon/hibmc/Makefile
index 95a4ed599d98..35a74cc10c80 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Makefile
+++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_i2c.o \
-	       dp/dp_aux.o dp/dp_link.o dp/dp_hw.o hibmc_drm_dp.o
+	       dp/dp_aux.o dp/dp_link.o dp/dp_hw.o dp/dp_phy.o hibmc_drm_dp.o
 
 obj-$(CONFIG_DRM_HISI_HIBMC) += hibmc-drm.o
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h
index 2c52a4476c4d..00b23301d26e 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h
@@ -38,6 +38,7 @@ struct hibmc_dp_dev {
 	struct mutex lock; /* protects concurrent RW in hibmc_dp_reg_write_field() */
 	struct hibmc_dp_link link;
 	u8 dpcd[DP_RECEIVER_CAP_SIZE];
+	void __iomem *phy_base;
 };
 
 #define dp_field_modify(reg_value, mask, val)				\
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
index 74dd9956144e..c5feef8dc27d 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
@@ -15,5 +15,6 @@
 #define HIBMC_DP_CLK_EN			0x7
 #define HIBMC_DP_SYNC_EN_MASK		0x3
 #define HIBMC_DP_LINK_RATE_CAL		27
+#define HIBMC_DP_SYNC_DELAY(lanes)	((lanes) == 0x2 ? 86 : 46)
 
 #endif
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
index a8d543881c09..0dac4cfdde7c 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
@@ -7,6 +7,7 @@
 #include "dp_comm.h"
 #include "dp_reg.h"
 #include "dp_hw.h"
+#include "dp_phy.h"
 
 static void hibmc_dp_set_tu(struct hibmc_dp_dev *dp, struct drm_display_mode *mode)
 {
@@ -72,6 +73,9 @@ static void hibmc_dp_set_sst(struct hibmc_dp_dev *dp, struct drm_display_mode *m
 				 HIBMC_DP_CFG_STREAM_HTOTAL_SIZE, htotal_size);
 	hibmc_dp_reg_write_field(dp, HIBMC_DP_VIDEO_HORIZONTAL_SIZE,
 				 HIBMC_DP_CFG_STREAM_HBLANK_SIZE, hblank_size);
+	hibmc_dp_reg_write_field(dp, HIBMC_DP_VIDEO_PACKET,
+				 HIBMC_DP_CFG_STREAM_SYNC_CALIBRATION,
+				 HIBMC_DP_SYNC_DELAY(dp->link.cap.lanes));
 }
 
 static void hibmc_dp_link_cfg(struct hibmc_dp_dev *dp, struct drm_display_mode *mode)
@@ -165,8 +169,11 @@ int hibmc_dp_hw_init(struct hibmc_dp *dp)
 
 	hibmc_dp_aux_init(dp_dev);
 
+	if (hibmc_dp_phy_init(dp_dev))
+		return -EAGAIN;
+
 	dp_dev->link.cap.lanes = 0x2;
-	dp_dev->link.cap.link_rate = DP_LINK_BW_2_7;
+	dp_dev->link.cap.link_rate = DP_LINK_BW_8_1;
 
 	/* hdcp data */
 	writel(HIBMC_DP_HDCP, dp_dev->base + HIBMC_DP_HDCP_CFG);
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c
index f6355c16cc0a..1124cd70c320 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c
@@ -6,6 +6,7 @@
 #include <drm/drm_print.h>
 #include "dp_comm.h"
 #include "dp_reg.h"
+#include "dp_phy.h"
 
 #define HIBMC_EQ_MAX_RETRY 5
 
@@ -108,7 +109,11 @@ static int hibmc_dp_link_training_cr_pre(struct hibmc_dp_dev *dp)
 		return ret;
 
 	for (i = 0; i < dp->link.cap.lanes; i++)
-		train_set[i] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+		train_set[i] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
+
+	ret = hibmc_dp_serdes_set_tx_cfg(dp, dp->link.train_set);
+	if (ret)
+		return ret;
 
 	ret = drm_dp_dpcd_write(&dp->aux, DP_TRAINING_LANE0_SET, train_set, dp->link.cap.lanes);
 	if (ret != dp->link.cap.lanes) {
@@ -137,21 +142,28 @@ static bool hibmc_dp_link_get_adjust_train(struct hibmc_dp_dev *dp,
 	return false;
 }
 
-static inline int hibmc_dp_link_reduce_rate(struct hibmc_dp_dev *dp)
+static int hibmc_dp_link_reduce_rate(struct hibmc_dp_dev *dp)
 {
+	u8 rate = 0;
+
 	switch (dp->link.cap.link_rate) {
 	case DP_LINK_BW_2_7:
 		dp->link.cap.link_rate = DP_LINK_BW_1_62;
-		return 0;
+		rate = DP_PHY_BW_1_62;
+		break;
 	case DP_LINK_BW_5_4:
 		dp->link.cap.link_rate = DP_LINK_BW_2_7;
-		return 0;
+		rate = DP_PHY_BW_2_7;
+		break;
 	case DP_LINK_BW_8_1:
 		dp->link.cap.link_rate = DP_LINK_BW_5_4;
-		return 0;
+		rate = DP_PHY_BW_5_4;
+		break;
 	default:
 		return -EINVAL;
 	}
+
+	return hibmc_dp_serdes_rate_switch(rate, dp);
 }
 
 static inline int hibmc_dp_link_reduce_lane(struct hibmc_dp_dev *dp)
@@ -159,6 +171,7 @@ static inline int hibmc_dp_link_reduce_lane(struct hibmc_dp_dev *dp)
 	switch (dp->link.cap.lanes) {
 	case 0x2:
 		dp->link.cap.lanes--;
+		drm_warn(dp->dev, "dp link training reduce to 1 lane\n");
 		break;
 	case 0x1:
 		drm_err(dp->dev, "dp link training reduce lane failed, already reach minimum\n");
@@ -206,6 +219,11 @@ static int hibmc_dp_link_training_cr(struct hibmc_dp_dev *dp)
 		}
 
 		level_changed = hibmc_dp_link_get_adjust_train(dp, lane_status);
+
+		ret = hibmc_dp_serdes_set_tx_cfg(dp, dp->link.train_set);
+		if (ret)
+			return ret;
+
 		ret = drm_dp_dpcd_write(&dp->aux, DP_TRAINING_LANE0_SET, dp->link.train_set,
 					dp->link.cap.lanes);
 		if (ret != dp->link.cap.lanes) {
@@ -255,6 +273,11 @@ static int hibmc_dp_link_training_channel_eq(struct hibmc_dp_dev *dp)
 		}
 
 		hibmc_dp_link_get_adjust_train(dp, lane_status);
+
+		ret = hibmc_dp_serdes_set_tx_cfg(dp, dp->link.train_set);
+		if (ret)
+			return ret;
+
 		ret = drm_dp_dpcd_write(&dp->aux, DP_TRAINING_LANE0_SET,
 					dp->link.train_set, dp->link.cap.lanes);
 		if (ret != dp->link.cap.lanes) {
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_phy.c b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_phy.c
new file mode 100644
index 000000000000..07940b5baf29
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_phy.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+// Copyright (c) 2024 Hisilicon Limited.
+#include <linux/delay.h>
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include "dp_comm.h"
+#include "dp_config.h"
+#include "dp_reg.h"
+#include "dp_phy.h"
+
+int hibmc_dp_serdes_set_tx_cfg(struct hibmc_dp_dev *dp, u8 train_set[HIBMC_DP_LANE_NUM_MAX])
+{
+	u32 serdes_tx_cfg[4][4] = { {DP_PHY_VOL0_PRE0, DP_PHY_VOL0_PRE1,
+				     DP_PHY_VOL0_PRE2, DP_PHY_VOL0_PRE3},
+				    {DP_PHY_VOL1_PRE0, DP_PHY_VOL1_PRE1, DP_PHY_VOL1_PRE2},
+				    {DP_PHY_VOL2_PRE0, DP_PHY_VOL2_PRE1}, {DP_PHY_VOL3_PRE0}};
+	int cfg[2];
+	int i;
+
+	for (i = 0; i < HIBMC_DP_LANE_NUM_MAX; i++) {
+		cfg[i] = serdes_tx_cfg[(train_set[i] & 0x3)]
+			 [(train_set[i] << DP_TRAIN_PRE_EMPHASIS_SHIFT & 0x3)];
+		if (!cfg[i]) {
+			cfg[i] = DP_PHY_VOL3_PRE0;
+			drm_warn(dp->dev, "dp serdes cfg beyonds the allowable range\n");
+		}
+
+		/* lane1 offset is 4 */
+		writel(FIELD_PREP(HIBMC_DP_PMA_TXDEEMPH, cfg[i]),
+		       dp->phy_base + HIBMC_DP_PMA_LANE0_OFFSET + i * 4);
+	}
+
+	usleep_range(300, 500);
+
+	if (readl(dp->phy_base + HIBMC_DP_LANE_STATUS_OFFSET) != DP_PHY_DONE) {
+		drm_err(dp->dev, "dp serdes cfg failed\n");
+		return -EAGAIN;
+	}
+
+	return 0;
+}
+
+int hibmc_dp_serdes_rate_switch(u8 rate, struct hibmc_dp_dev *dp)
+{
+	writel(rate, dp->phy_base + HIBMC_DP_LANE0_RATE_OFFSET);
+	writel(rate, dp->phy_base + HIBMC_DP_LANE1_RATE_OFFSET);
+
+	usleep_range(300, 500);
+
+	if (readl(dp->phy_base + HIBMC_DP_LANE_STATUS_OFFSET) != DP_PHY_DONE) {
+		drm_err(dp->dev, "dp serdes rate switching failed\n");
+		return -EAGAIN;
+	}
+
+	if (rate < DP_PHY_BW_8_1)
+		drm_warn(dp->dev, "reducing serdes rate to :%d\n",
+			 rate ? rate * HIBMC_DP_LINK_RATE_CAL * 10 : 162);
+
+	return 0;
+}
+
+int hibmc_dp_phy_init(struct hibmc_dp_dev *dp)
+{
+	dp->phy_base = dp->base + HIBMC_DP_HOST_OFFSET;
+
+	writel(FIELD_PREP(HIBMC_DP_PMA_TXDEEMPH, DP_PHY_VOL0_PRE0),
+	       dp->phy_base + HIBMC_DP_PMA_LANE0_OFFSET);
+	writel(FIELD_PREP(HIBMC_DP_PMA_TXDEEMPH, DP_PHY_VOL0_PRE0),
+	       dp->phy_base + HIBMC_DP_PMA_LANE1_OFFSET);
+
+	return hibmc_dp_serdes_rate_switch(DP_PHY_BW_8_1, dp);
+}
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_phy.h b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_phy.h
new file mode 100644
index 000000000000..db9fddd24d0e
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_phy.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (c) 2025 Hisilicon Limited. */
+
+#ifndef DP_PHY_H
+#define DP_PHY_H
+
+/* dp phy reg */
+#define HIBMC_DP_HOST_OFFSET		0x10000
+#define HIBMC_DP_LANE0_RATE_OFFSET	0x4
+#define HIBMC_DP_LANE1_RATE_OFFSET	0xc
+#define HIBMC_DP_LANE_STATUS_OFFSET	0x10
+#define HIBMC_DP_PMA_LANE0_OFFSET	0x18
+#define HIBMC_DP_PMA_LANE1_OFFSET	0x1c
+#define HIBMC_DP_PMA_TXDEEMPH		GENMASK(18, 1)
+
+/* dp phy cfg parameter */
+#define DP_PHY_VOL0_PRE0		0x280
+#define DP_PHY_VOL0_PRE1		0x2300
+#define DP_PHY_VOL0_PRE2		0x53c0
+#define DP_PHY_VOL0_PRE3		0x8400
+#define DP_PHY_VOL1_PRE0		0x380
+#define DP_PHY_VOL1_PRE1		0x3440
+#define DP_PHY_VOL1_PRE2		0x6480
+#define DP_PHY_VOL2_PRE0		0x500
+#define DP_PHY_VOL2_PRE1		0x4500
+#define DP_PHY_VOL3_PRE0		0x600
+#define DP_PHY_BW_8_1			0x3
+#define DP_PHY_BW_5_4			0x2
+#define DP_PHY_BW_2_7			0x1
+#define DP_PHY_BW_1_62			0x0
+
+#define DP_PHY_DONE			0x3
+
+int hibmc_dp_phy_init(struct hibmc_dp_dev *dp);
+int hibmc_dp_serdes_rate_switch(u8 rate, struct hibmc_dp_dev *dp);
+int hibmc_dp_serdes_set_tx_cfg(struct hibmc_dp_dev *dp, u8 train_set[HIBMC_DP_LANE_NUM_MAX]);
+
+#endif
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h
index 4a515c726d52..99ba9c951c41 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h
@@ -72,5 +72,6 @@
 #define HIBMC_DP_CFG_STREAM_TU_SYMBOL_FRAC_SIZE	GENMASK(9, 6)
 #define HIBMC_DP_CFG_STREAM_HTOTAL_SIZE		GENMASK(31, 16)
 #define HIBMC_DP_CFG_STREAM_HBLANK_SIZE		GENMASK(15, 0)
+#define HIBMC_DP_CFG_STREAM_SYNC_CALIBRATION GENMASK(31, 20)
 
 #endif
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index e6de6d5edf6b..bade693d9730 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -28,9 +28,7 @@
 #include "hibmc_drm_drv.h"
 #include "hibmc_drm_regs.h"
 
-#define HIBMC_DP_HOST_SERDES_CTRL		0x1f001c
-#define HIBMC_DP_HOST_SERDES_CTRL_VAL		0x8a00
-#define HIBMC_DP_HOST_SERDES_CTRL_MASK		0x7ffff
+#define HIBMC_DP_HOST_SERDES_CTRL	0x1f001c
 
 DEFINE_DRM_GEM_FOPS(hibmc_fops);
 
@@ -122,8 +120,8 @@ static int hibmc_kms_init(struct hibmc_drm_private *priv)
 	}
 
 	/* if DP existed, init DP */
-	if ((readl(priv->mmio + HIBMC_DP_HOST_SERDES_CTRL) &
-	     HIBMC_DP_HOST_SERDES_CTRL_MASK) == HIBMC_DP_HOST_SERDES_CTRL_VAL) {
+	ret = readl(priv->mmio + HIBMC_DP_HOST_SERDES_CTRL);
+	if (ret) {
 		ret = hibmc_dp_init(priv);
 		if (ret)
 			drm_err(dev, "failed to init dp: %d\n", ret);
