diff --git a/drivers/gpu/drm/phytium/phytium_crtc.c b/drivers/gpu/drm/phytium/phytium_crtc.c
index e1464b437e6d3..964c448cdb76a 100644
--- a/drivers/gpu/drm/phytium/phytium_crtc.c
+++ b/drivers/gpu/drm/phytium/phytium_crtc.c
@@ -348,11 +348,16 @@ static void phytium_crtc_gamma_set(struct drm_crtc *crtc)
 	uint32_t active_line = 0, timeout = 500;
 	int i;
 
+	if (!state)
+		return;
+
 	if (state->gamma_lut) {
 		if (WARN((state->gamma_lut->length/sizeof(struct drm_color_lut) != GAMMA_INDEX_MAX),
 			"gamma size is not match\n"))
 			return;
 		lut = (struct drm_color_lut *)state->gamma_lut->data;
+		if (!lut)
+			return;
 
 		config = phytium_readl_reg(priv, group_offset, PHYTIUM_DC_FRAMEBUFFER_CONFIG);
 		if (config & FRAMEBUFFER_OUTPUT) {
@@ -360,6 +365,8 @@ static void phytium_crtc_gamma_set(struct drm_crtc *crtc)
 			uint32_t frame_time;
 			uint32_t value_a, value_b;
 
+			if (!mode)
+				return;
 			frame_time = mode->crtc_vtotal * mode->crtc_htotal / mode->crtc_clock;
 			value_b = (frame_time - 2) * mode->crtc_vtotal;
 			local_irq_save(flags);
diff --git a/drivers/gpu/drm/phytium/phytium_dp.c b/drivers/gpu/drm/phytium/phytium_dp.c
index 1bbd391887f89..c800a7ac83442 100644
--- a/drivers/gpu/drm/phytium/phytium_dp.c
+++ b/drivers/gpu/drm/phytium/phytium_dp.c
@@ -20,6 +20,7 @@
 #include "pe220x_dp.h"
 #include "phytium_panel.h"
 #include "phytium_reg.h"
+#include "phytium_crtc.h"
 
 static void phytium_dp_aux_init(struct phytium_dp_device *phytium_dp);
 static void handle_plugged_change(struct phytium_dp_device *phytium_dp, bool plugged);
@@ -310,19 +311,25 @@ static int phytium_connector_add_common_modes(struct phytium_dp_device *phytium_
 
 static int phytium_connector_get_modes(struct drm_connector *connector)
 {
+	struct drm_device *dev = connector->dev;
+	struct phytium_display_private *priv = dev->dev_private;
 	struct phytium_dp_device *phytium_dp = connector_to_dp_device(connector);
 	struct edid *edid;
 	int ret = 0;
 
-	if (phytium_dp->is_edp)
+	if (phytium_dp->is_edp) {
 		edid = phytium_dp->edp_edid;
-	else
+	} else if (priv->info.bmc_mode) {
 		edid = drm_get_edid(connector, &phytium_dp->aux.ddc);
+	} else {
+		edid = phytium_dp->detect_edid;
+	}
 
 	if (edid && drm_edid_is_valid(edid)) {
 		drm_connector_update_edid_property(connector, edid);
 		ret = drm_add_edid_modes(connector, edid);
-		phytium_dp->has_audio = drm_detect_monitor_audio(edid);
+		if (priv->info.bmc_mode)
+			phytium_dp->has_audio = drm_detect_monitor_audio(edid);
 		phytium_get_native_mode(phytium_dp);
 		if (dc_fake_mode_enable)
 			ret += phytium_connector_add_common_modes(phytium_dp);
@@ -331,7 +338,7 @@ static int phytium_connector_get_modes(struct drm_connector *connector)
 		phytium_dp->has_audio = false;
 	}
 
-	if (!phytium_dp->is_edp)
+	if (priv->info.bmc_mode)
 		kfree(edid);
 
 	return ret;
@@ -1723,8 +1730,33 @@ static void phytium_dp_handle_test_request(struct phytium_dp_device *phytium_dp)
 
 }
 
+static void phytium_dp_unset_edid(struct drm_connector *connector)
+{
+	struct phytium_dp_device *phytium_dp = connector_to_dp_device(connector);
+
+	kfree(phytium_dp->detect_edid);
+	phytium_dp->detect_edid = NULL;
+	phytium_dp->has_audio = false;
+}
+
+static enum drm_connector_status phytium_dp_set_edid(struct drm_connector *connector)
+{
+	struct phytium_dp_device *phytium_dp = connector_to_dp_device(connector);
+
+	phytium_dp_unset_edid(connector);
+	phytium_dp->detect_edid = drm_get_edid(connector, &phytium_dp->aux.ddc);
+	if (!phytium_dp->detect_edid)
+		return connector_status_disconnected;
+
+	phytium_dp->has_audio = drm_detect_monitor_audio(phytium_dp->detect_edid);
+
+	return connector_status_connected;
+}
+
 static int phytium_dp_long_pulse(struct drm_connector *connector, bool hpd_raw_state)
 {
+	struct drm_device *dev = connector->dev;
+	struct phytium_display_private *priv = dev->dev_private;
 	struct phytium_dp_device *phytium_dp = connector_to_dp_device(connector);
 	enum drm_connector_status status = connector->status;
 	bool video_enable = false;
@@ -1759,6 +1791,12 @@ static int phytium_dp_long_pulse(struct drm_connector *connector, bool hpd_raw_s
 		video_enable = phytium_dp_hw_video_is_enable(phytium_dp);
 		phytium_dp_start_link_train(phytium_dp);
 
+		if (!priv->info.bmc_mode) {
+			status = phytium_dp_set_edid(connector);
+			if (status == connector_status_disconnected)
+				goto out;
+		}
+
 		if (video_enable) {
 			mdelay(2);
 			phytium_dp_hw_enable_video(phytium_dp);
@@ -2177,6 +2215,99 @@ void phytium_dp_adjust_link_train_parameter(struct phytium_dp_device *phytium_dp
 		       phytium_dp->link_rate, phytium_dp->link_lane_count);
 }
 
+static void
+phytium_dp_modify_dc_hsync_time(struct phytium_dp_device *phytium_dp)
+{
+	struct drm_device *dev = NULL;
+	struct phytium_display_private *priv = NULL;
+	struct drm_connector *connector = NULL;
+	struct drm_crtc *crtc = NULL;
+	struct phytium_crtc *phytium_crtc = NULL;
+	struct drm_display_mode temp_mode = phytium_dp->mode;
+	int phys_pipe = 0, back_porch = 0, lines_add = 0;
+	int config = 0, fifo_value = 0;
+	uint32_t group_offset;
+
+	dev = phytium_dp->dev;
+	if (!dev) {
+		DRM_INFO("%s: dev is null\n", __func__);
+		return;
+	}
+
+	priv = dev->dev_private;
+	if (!priv) {
+		DRM_INFO("%s: priv is null\n", __func__);
+		return;
+	}
+
+	connector = &phytium_dp->connector;
+	if (!connector) {
+		DRM_INFO("%s: connector is null\n", __func__);
+		return;
+	}
+
+	crtc = connector->state->crtc;
+	if (!crtc)
+		return;
+
+	group_offset = priv->dp_reg_base[phytium_dp->port];
+	fifo_value = phytium_readl_reg(priv, group_offset, PHYTIUM_DP_DATA_CONTROL);
+	if (fifo_value != PHYTIUM_DP_DEFAULT_FIFO_VALUE) {
+		pr_info("fifo value changed,no hsync change\n");
+		return;
+	}
+
+
+	DRM_DEBUG_KMS("before modify hdisplay:%d,h_start:%d,h_end:%d,h_total:%d\n",
+				temp_mode.crtc_hdisplay, temp_mode.crtc_hsync_start,
+				temp_mode.crtc_hsync_end, temp_mode.crtc_htotal);
+
+
+	phytium_crtc = to_phytium_crtc(crtc);
+	phys_pipe = phytium_crtc->phys_pipe;
+	group_offset = priv->dc_reg_base[phys_pipe];
+	back_porch = temp_mode.crtc_htotal - temp_mode.crtc_hsync_end;
+	lines_add = phytium_dp->link_lane_count * HSYNC_LANE_COUNT_MULTI -
+			(temp_mode.crtc_hsync_end - temp_mode.crtc_hsync_start);
+
+	if (lines_add > 0) {
+		if (lines_add < back_porch) {
+			temp_mode.crtc_hsync_end += lines_add;
+		} else {
+			temp_mode.crtc_hsync_end += (back_porch - HSYNC_MIN_ADJ_OFFSET);
+			temp_mode.crtc_hsync_start -=
+				(lines_add - back_porch + HSYNC_MIN_ADJ_OFFSET);
+
+			if (temp_mode.crtc_hsync_start < temp_mode.crtc_hdisplay)
+				temp_mode.crtc_hsync_start =
+					temp_mode.crtc_hdisplay + HSYNC_MIN_ADJ_OFFSET;
+		}
+	} else {
+		if ((temp_mode.crtc_hsync_end + lines_add) > temp_mode.crtc_hsync_start) {
+			temp_mode.crtc_hsync_end += lines_add;
+		} else {
+			if ((temp_mode.crtc_hsync_end + lines_add) > temp_mode.crtc_hdisplay)
+				temp_mode.crtc_hsync_start = temp_mode.crtc_hsync_end + lines_add;
+			else
+				temp_mode.crtc_hsync_start =
+					temp_mode.crtc_hdisplay + HSYNC_MIN_ADJ_OFFSET;
+			temp_mode.crtc_hsync_end =
+				temp_mode.crtc_hsync_start + HSYNC_MIN_ADJ_OFFSET;
+		}
+	}
+
+	config = ((temp_mode.crtc_hsync_start & HSYNC_START_MASK) << HSYNC_START_SHIFT)
+			| ((temp_mode.crtc_hsync_end & HSYNC_END_MASK) << HSYNC_END_SHIFT)
+			| HSYNC_PULSE_ENABLED;
+	config |= (temp_mode.flags & DRM_MODE_FLAG_PHSYNC) ? 0 : HSYNC_NEGATIVE;
+	phytium_writel_reg(priv, config, group_offset, PHYTIUM_DC_HSYNC);
+
+	DRM_DEBUG_KMS("after modify hdisplay:%d,h_start:%d,h_end:%d,h_total:%d\n",
+			temp_mode.crtc_hdisplay, temp_mode.crtc_hsync_start,
+			temp_mode.crtc_hsync_end, temp_mode.crtc_htotal);
+
+}
+
 static void phytium_encoder_enable(struct drm_encoder *encoder)
 {
 	struct phytium_dp_device *phytium_dp = encoder_to_dp_device(encoder);
@@ -2198,6 +2329,9 @@ static void phytium_encoder_enable(struct drm_encoder *encoder)
 		mdelay(2);
 	}
 
+	if (!phytium_dp->is_edp)
+		phytium_dp_modify_dc_hsync_time(phytium_dp);
+
 	phytium_dp_hw_config_video(phytium_dp);
 	if (ret == 0) {
 		phytium_dp_hw_enable_video(phytium_dp);
@@ -2247,12 +2381,6 @@ phytium_encoder_mode_valid(struct drm_encoder *encoder, const struct drm_display
 		(phytium_dp->native_mode.vtotal == mode->vtotal))
 		return MODE_OK;
 
-	if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
-		return MODE_BAD_HVALUE;
-
-	if ((mode->hdisplay == 1024) && (mode->clock > 78000))
-		return MODE_BAD_HVALUE;
-
 	if ((mode->hdisplay < 640) || (mode->vdisplay < 480))
 		return MODE_BAD_HVALUE;
 
diff --git a/drivers/gpu/drm/phytium/phytium_dp.h b/drivers/gpu/drm/phytium/phytium_dp.h
index b8cc42e010958..00a3dcb6a7375 100644
--- a/drivers/gpu/drm/phytium/phytium_dp.h
+++ b/drivers/gpu/drm/phytium/phytium_dp.h
@@ -98,6 +98,7 @@ struct phytium_dp_device {
 	uint32_t trigger_train_fail;
 
 	unsigned char train_set[4];
+	struct edid *detect_edid;
 	struct edid *edp_edid;
 	bool has_audio;
 	bool fast_train_support;
@@ -145,6 +146,9 @@ enum phytium_dpcd_phy_tp {
 #define connector_to_dp_device(x) container_of(x, struct phytium_dp_device, connector)
 #define panel_to_dp_device(x) container_of(x, struct phytium_dp_device, panel)
 #define train_retry_to_dp_device(x)	container_of(x, struct phytium_dp_device, train_retry_work)
+#define HSYNC_LANE_COUNT_MULTI 30
+#define HSYNC_MIN_ADJ_OFFSET 1
+
 void phytium_phy_writel(struct phytium_dp_device *phytium_dp, uint32_t address, uint32_t data);
 uint32_t phytium_phy_readl(struct phytium_dp_device *phytium_dp, uint32_t address);
 
diff --git a/drivers/gpu/drm/phytium/phytium_gem.c b/drivers/gpu/drm/phytium/phytium_gem.c
index 95b6b0360c065..5ced76ce94d55 100644
--- a/drivers/gpu/drm/phytium/phytium_gem.c
+++ b/drivers/gpu/drm/phytium/phytium_gem.c
@@ -36,7 +36,8 @@ int phytium_memory_pool_alloc(struct phytium_display_private *priv, void **pvadd
 
 void phytium_memory_pool_free(struct phytium_display_private *priv, void *vaddr, uint64_t size)
 {
-	gen_pool_free(priv->memory_pool, (unsigned long)vaddr, size);
+	if (priv->memory_pool)
+		gen_pool_free(priv->memory_pool, (unsigned long)vaddr, size);
 }
 
 int phytium_memory_pool_init(struct device *dev, struct phytium_display_private *priv)
@@ -69,7 +70,8 @@ int phytium_memory_pool_init(struct device *dev, struct phytium_display_private
 
 void phytium_memory_pool_fini(struct device *dev, struct phytium_display_private *priv)
 {
-	gen_pool_destroy(priv->memory_pool);
+	if (priv->memory_pool)
+		gen_pool_destroy(priv->memory_pool);
 }
 
 struct sg_table *
diff --git a/drivers/gpu/drm/phytium/phytium_pci.c b/drivers/gpu/drm/phytium/phytium_pci.c
index d87e216b14091..b899d25fd0bcf 100644
--- a/drivers/gpu/drm/phytium/phytium_pci.c
+++ b/drivers/gpu/drm/phytium/phytium_pci.c
@@ -327,6 +327,14 @@ static int phytium_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
 	return -1;
 }
 
+static void phytium_pci_shutdown(struct pci_dev *pdev)
+{
+	struct drm_device *dev = pci_get_drvdata(pdev);
+	struct phytium_display_private *priv = dev->dev_private;
+
+	priv->display_shutdown(dev);
+}
+
 static void phytium_pci_remove(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
@@ -334,6 +342,7 @@ static void phytium_pci_remove(struct pci_dev *pdev)
 
 	phytium_dp_hpd_irq_setup(dev, false);
 	cancel_work_sync(&priv->hotplug_work);
+	phytium_pci_shutdown(pdev);
 	drm_dev_unregister(dev);
 	phytium_pci_vram_fini(pdev, priv);
 	phytium_pci_private_fini(pdev, priv);
@@ -344,14 +353,6 @@ static void phytium_pci_remove(struct pci_dev *pdev)
 	drm_dev_put(dev);
 }
 
-static void phytium_pci_shutdown(struct pci_dev *pdev)
-{
-	struct drm_device *dev = pci_get_drvdata(pdev);
-	struct phytium_display_private *priv = dev->dev_private;
-
-	priv->display_shutdown(dev);
-}
-
 static int phytium_pci_pm_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
diff --git a/drivers/gpu/drm/phytium/phytium_platform.c b/drivers/gpu/drm/phytium/phytium_platform.c
index 059a8555d7dff..f94047a2e5daf 100644
--- a/drivers/gpu/drm/phytium/phytium_platform.c
+++ b/drivers/gpu/drm/phytium/phytium_platform.c
@@ -290,6 +290,14 @@ static int phytium_platform_probe(struct platform_device *pdev)
 	return -1;
 }
 
+static void phytium_platform_shutdown(struct platform_device *pdev)
+{
+	struct drm_device *dev = dev_get_drvdata(&pdev->dev);
+	struct phytium_display_private *priv = dev->dev_private;
+
+	priv->display_shutdown(dev);
+}
+
 static int phytium_platform_remove(struct platform_device *pdev)
 {
 	struct drm_device *dev = dev_get_drvdata(&pdev->dev);
@@ -297,6 +305,7 @@ static int phytium_platform_remove(struct platform_device *pdev)
 
 	phytium_dp_hpd_irq_setup(dev, false);
 	cancel_work_sync(&priv->hotplug_work);
+	phytium_platform_shutdown(pdev);
 	drm_dev_unregister(dev);
 	phytium_platform_private_fini(pdev);
 	dev_set_drvdata(&pdev->dev, NULL);
@@ -305,14 +314,6 @@ static int phytium_platform_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static void phytium_platform_shutdown(struct platform_device *pdev)
-{
-	struct drm_device *dev = dev_get_drvdata(&pdev->dev);
-	struct phytium_display_private *priv = dev->dev_private;
-
-	priv->display_shutdown(dev);
-}
-
 static int phytium_platform_pm_suspend(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
diff --git a/drivers/gpu/drm/phytium/phytium_reg.h b/drivers/gpu/drm/phytium/phytium_reg.h
index e23ac74d4c78c..9aaa3f6a36318 100644
--- a/drivers/gpu/drm/phytium/phytium_reg.h
+++ b/drivers/gpu/drm/phytium/phytium_reg.h
@@ -239,6 +239,7 @@
 	#define SCRAMBLER_RESET					BIT(0)
 #define PHYTIUM_DP_SOURCE_CONTROL_STATUS		0x00C4
 #define PHYTIUM_DP_DATA_CONTROL				0x00C8
+	#define PHYTIUM_DP_DEFAULT_FIFO_VALUE		0x20042004
 #define PHYTIUM_DP_CORE_CAPABILITY			0x00F8
 #define PHYTIUM_DP_CORE_ID				0x00FC
 #define PHYTIUM_DP_AUX_COMMAND				0x0100
diff --git a/drivers/gpu/drm/phytium/px210_dp.c b/drivers/gpu/drm/phytium/px210_dp.c
index be3c520a3c09d..c9516de1c1135 100644
--- a/drivers/gpu/drm/phytium/px210_dp.c
+++ b/drivers/gpu/drm/phytium/px210_dp.c
@@ -896,6 +896,9 @@ int px210_dp_hw_reset(struct phytium_dp_device *phytium_dp)
 
 uint8_t px210_dp_hw_get_source_lane_count(struct phytium_dp_device *phytium_dp)
 {
+	if (source_max_lane_count != 4)
+		return source_max_lane_count;
+
 	return px210_dp_source_lane_count[phytium_dp->port];
 }