diff --git a/framework/model/display/driver/hdf_drm_panel.c b/framework/model/display/driver/hdf_drm_panel.c
index 4e2f5b211f57c7a23eb476a093fbdd907beb8558..de9a25ab17ec01b81e4cbf37429b3734b8f05a88 100644
--- a/framework/model/display/driver/hdf_drm_panel.c
+++ b/framework/model/display/driver/hdf_drm_panel.c
@@ -33,7 +33,7 @@ static int HdfDrmPanelUnprepare(struct drm_panel *panel)
     struct HdfDrmPanel *hdfDrmPanel = ToHdfDrmPanel(panel);
     struct PanelData *panelData;
 
-    HDF_LOGD("HdfDrmPanelUnprepare");
+    HDF_LOGE("yktest HdfDrmPanelUnprepare");
     if (hdfDrmPanel->index >= PANEL_MAX) {
         HDF_LOGE("panel num out of PANEL_MAX");
         return HDF_FAILURE;
@@ -42,6 +42,7 @@ static int HdfDrmPanelUnprepare(struct drm_panel *panel)
     panelData = hdfDrmPanel->manager->panelManager->panel[hdfDrmPanel->index];
     panelData->unprepare(panelData);
     OsalMutexUnlock(&hdfDrmPanel->manager->dispMutex);
+    HDF_LOGE("yktest HdfDrmPanelUnprepare end");
     return HDF_SUCCESS;
 }
 
@@ -50,7 +51,7 @@ static int HdfDrmPanelPrepare(struct drm_panel *panel)
     struct HdfDrmPanel *hdfDrmPanel = ToHdfDrmPanel(panel);
     struct PanelData *panelData;
 
-    HDF_LOGD("HdfDrmPanelPrepare");
+    HDF_LOGE("yktest HdfDrmPanelPrepare");
     if (hdfDrmPanel->index >= PANEL_MAX) {
         HDF_LOGE("panel num out of PANEL_MAX");
         return HDF_FAILURE;
@@ -59,6 +60,7 @@ static int HdfDrmPanelPrepare(struct drm_panel *panel)
     panelData = hdfDrmPanel->manager->panelManager->panel[hdfDrmPanel->index];
     panelData->prepare(panelData);
     OsalMutexUnlock(&hdfDrmPanel->manager->dispMutex);
+    HDF_LOGE("yktest HdfDrmPanelPrepare end");
     return HDF_SUCCESS;
 }
 
@@ -67,7 +69,7 @@ static int HdfDrmPanelDisable(struct drm_panel *panel)
     struct HdfDrmPanel *hdfDrmPanel = ToHdfDrmPanel(panel);
     struct PanelData *panelData;
 
-    HDF_LOGD("HdfDrmPanelDisable");
+    HDF_LOGE("yktest HdfDrmPanelDisable");
     if (hdfDrmPanel->index >= PANEL_MAX) {
         HDF_LOGE("panel num out of PANEL_MAX");
         return HDF_FAILURE;
@@ -76,6 +78,7 @@ static int HdfDrmPanelDisable(struct drm_panel *panel)
     panelData = hdfDrmPanel->manager->panelManager->panel[hdfDrmPanel->index];
     panelData->off(panelData);
     OsalMutexUnlock(&hdfDrmPanel->manager->dispMutex);
+    HDF_LOGE("yktest HdfDrmPanelDisable end");
     return HDF_SUCCESS;
 }
 
@@ -84,7 +87,7 @@ static int HdfDrmPanelEnable(struct drm_panel *panel)
     struct HdfDrmPanel *hdfDrmPanel = ToHdfDrmPanel(panel);
     struct PanelData *panelData;
     
-    HDF_LOGD("HdfDrmPanelEnable");
+    HDF_LOGE("yktest HdfDrmPanelEnable");
     if (hdfDrmPanel->index >= PANEL_MAX) {
         HDF_LOGE("panel num out of PANEL_MAX");
         return HDF_FAILURE;
@@ -93,6 +96,7 @@ static int HdfDrmPanelEnable(struct drm_panel *panel)
     OsalMutexLock(&hdfDrmPanel->manager->dispMutex);
     panelData->on(panelData);
     OsalMutexUnlock(&hdfDrmPanel->manager->dispMutex);
+    HDF_LOGE("yktest HdfDrmPanelEnable end");
     return HDF_SUCCESS;
 }
 
@@ -110,7 +114,7 @@ static int HdfDrmPanelGetModes(struct drm_panel *panel, struct drm_connector *co
         HDF_LOGE("connector is NULL");
         return 0;
     }
-    HDF_LOGD("HdfDrmPanelGetModes");
+    HDF_LOGE("yktest HdfDrmPanelGetModes");
     hdfDrmPanel = ToHdfDrmPanel(panel);
     panelInfo = hdfDrmPanel->manager->panelManager->panel[hdfDrmPanel->index]->info;
     mode = drm_mode_duplicate(connector->dev, &hdfDrmPanel->mode);
@@ -125,6 +129,7 @@ static int HdfDrmPanelGetModes(struct drm_panel *panel, struct drm_connector *co
     connector->display_info.width_mm = panelInfo->pWidth;
     connector->display_info.height_mm = panelInfo->pHeight;
     drm_mode_probed_add(connector, mode);
+    HDF_LOGE("yktest HdfDrmPanelGetModes end");
     return 1;
 }
 
@@ -142,6 +147,7 @@ static ssize_t SuspendStore(struct device *dev,
     int32_t ret;
     struct HdfDrmPanel *hdfDrmPanel = dev_get_drvdata(dev);
 
+    HDF_LOGE("yktest SuspendStore");
     ret = HdfDrmPanelDisable(&hdfDrmPanel->panel);
     if (ret != HDF_SUCCESS) {
         HDF_LOGE("%s HdfDrmPanelDisable fail", __func__);
@@ -152,6 +158,7 @@ static ssize_t SuspendStore(struct device *dev,
         HDF_LOGE("%s HdfDrmPanelUnprepare fail", __func__);
         return count;
     }
+    HDF_LOGE("yktest SuspendStore end");
     return count;
 }
 static DEVICE_ATTR(suspend, S_IWUSR, NULL, SuspendStore);
@@ -162,6 +169,7 @@ static ssize_t ResumeStore(struct device *dev,
     int32_t ret;
     struct HdfDrmPanel *hdfDrmPanel = dev_get_drvdata(dev);
 
+    HDF_LOGE("yktest ResumeStore");
     ret = HdfDrmPanelPrepare(&hdfDrmPanel->panel);
     if (ret != HDF_SUCCESS) {
         HDF_LOGE("%s HdfDrmPanelPrepare fail", __func__);
@@ -172,6 +180,7 @@ static ssize_t ResumeStore(struct device *dev,
         HDF_LOGE("%s HdfDrmPanelEnable fail", __func__);
         return count;
     }
+    HDF_LOGE("yktest ResumeStore end");
     return count;
 }
 static DEVICE_ATTR(resume, S_IWUSR, NULL, ResumeStore);
@@ -179,6 +188,7 @@ static DEVICE_ATTR(resume, S_IWUSR, NULL, ResumeStore);
 static ssize_t BacklightStore(struct device *dev,
     struct device_attribute *attr, const char *buf, size_t count)
 {
+    HDF_LOGE("yktest BacklightStore");
     int32_t ret;
     unsigned long level;
     struct PanelData *panel = NULL;
@@ -196,7 +206,7 @@ static ssize_t BacklightStore(struct device *dev,
     if (ret != HDF_SUCCESS) {
         HDF_LOGE("%s UpdateBrightness fail", __func__);
     }
-
+    HDF_LOGE("yktest BacklightStore end");
     return count;
 }
 static DEVICE_ATTR(backlight, S_IWUSR, NULL, BacklightStore);
@@ -211,6 +221,7 @@ static struct device_attribute *g_panelAttrs[] = {
 
 static void CreateDrmMode(struct HdfDrmPanel *hdfDrmPanel)
 {
+    HDF_LOGE("yktest CreateDrmMode");
     uint32_t panelIndex;
     struct PanelInfo *panelInfo = NULL;
 
@@ -226,6 +237,7 @@ static void CreateDrmMode(struct HdfDrmPanel *hdfDrmPanel)
     hdfDrmPanel->mode.vsync_end = panelInfo->height + panelInfo->vfp + panelInfo->vsw;
     hdfDrmPanel->mode.vtotal = panelInfo->height + panelInfo->vfp + panelInfo->vsw + panelInfo->vbp;
     hdfDrmPanel->mode.flags = 10; /* 10: Sync and timing flags, detial at include/drm/drm_modes.h */
+    HDF_LOGE("yktest CreateDrmMode end");
 }
 
 static struct HdfDrmPanel *InstanceHdfDrmPanel(struct DispManager *manager, int32_t index)
@@ -245,6 +257,7 @@ static struct HdfDrmPanel *InstanceHdfDrmPanel(struct DispManager *manager, int3
 
 static int32_t HdfDrmPanelEntryInit(struct HdfDeviceObject *object)
 {
+    HDF_LOGE("yktest HdfDrmPanelEntryInit");
     (void)object;
     uint32_t ret;
     uint32_t i;
@@ -285,7 +298,7 @@ static int32_t HdfDrmPanelEntryInit(struct HdfDeviceObject *object)
         }
         HDF_LOGI("%s panel[%d] registered success", __func__, i);
     }
-    HDF_LOGI("%s success", __func__);
+    HDF_LOGE("yktest %s success", __func__);
     return HDF_SUCCESS;
 }
 
diff --git a/framework/model/display/driver/panel/ili9881_st_5p5.c b/framework/model/display/driver/panel/ili9881_st_5p5.c
index 6ca69a7faec9e5d53da8a492b2cc9681d1200a44..b046fcd595171ad5286f4bfb76c551639a4c8dfa 100755
--- a/framework/model/display/driver/panel/ili9881_st_5p5.c
+++ b/framework/model/display/driver/panel/ili9881_st_5p5.c
@@ -415,6 +415,7 @@ static struct panel_ili9881_dev *ToPanelSimpleDev(const struct PanelData *panel)
 
 static int32_t panel_simple_regulator_enable(void)
 {
+    HDF_LOGE("yktest panel_simple_regulator_enable");
     int32_t err;
     if (g_panel_dev == NULL) {
         return -1;
@@ -424,19 +425,23 @@ static int32_t panel_simple_regulator_enable(void)
         HDF_LOGE("regulator_enable failed");
         return err;
     }
+    HDF_LOGE("yktest panel_simple_regulator_enable end");
     return 0;
 }
 static int32_t panel_simple_regulator_disable(void)
 {
+    HDF_LOGE("yktest panel_simple_regulator_disable");
     if (g_panel_dev == NULL) {
         return -1;
     }
     regulator_disable(g_panel_dev->supply);
+    HDF_LOGE("yktest panel_simple_regulator_disable end");
     return 0;
 }
 
 int panel_simple_loader_protect(struct drm_panel *panel)
 {
+    HDF_LOGE("yktest panel_simple_loader_protect");
     int err;
     (void)panel;
     err = panel_simple_regulator_enable();
@@ -444,6 +449,7 @@ int panel_simple_loader_protect(struct drm_panel *panel)
         HDF_LOGE("failed to enable supply: %d\n", err);
         return err;
     }
+    HDF_LOGE("yktest panel_simple_loader_protect end");
     return 0;
 }
 EXPORT_SYMBOL(panel_simple_loader_protect);
@@ -453,7 +459,7 @@ static int32_t PanelSendCmds(struct mipi_dsi_device *dsi,
 {
     int32_t i = 0;
 
-    HDF_LOGI("%s enter", __func__);
+    HDF_LOGE("yktest %s enter", __func__);
     if (dsi == NULL) {
         HDF_LOGE("dsi is NULL");
         return -EINVAL;
@@ -464,28 +470,31 @@ static int32_t PanelSendCmds(struct mipi_dsi_device *dsi,
             OsalMSleep(cmds[i].delay);
         }
     }
+    HDF_LOGE("yktest PanelSendCmds end");
     return HDF_SUCCESS;
 }
 
 static int32_t PanelOn(struct PanelData *panel)
 {
     struct panel_ili9881_dev *panel_dev = NULL;
-
+    HDF_LOGE("yktest PanelOn");
     panel_dev = ToPanelSimpleDev(panel);
     if (panel_dev->hw_delay.enable_delay) {
         OsalMSleep(panel_dev->hw_delay.enable_delay);
     }
+    HDF_LOGE("yktest PanelOn end");
     return HDF_SUCCESS;
 }
 
 static int32_t PanelOff(struct PanelData *panel)
 {
     struct panel_ili9881_dev *panel_dev = NULL;
-
+    HDF_LOGE("yktest PanelOff");
     panel_dev = ToPanelSimpleDev(panel);
     if (panel_dev->hw_delay.disable_delay) {
         OsalMSleep(panel_dev->hw_delay.disable_delay);
     }
+    HDF_LOGE("yktest PanelOff end");
     return HDF_SUCCESS;
 }
 
@@ -493,7 +502,7 @@ static int32_t PanelPrepare(struct PanelData *panel)
 {
     int32_t ret;
     struct panel_ili9881_dev *panel_dev = NULL;
-
+    HDF_LOGE("yktest PanelPrepare");
     panel_dev = ToPanelSimpleDev(panel);
     ret = regulator_enable(panel_dev->supply);
     if (ret < 0) {
@@ -527,7 +536,7 @@ static int32_t PanelPrepare(struct PanelData *panel)
     if (panel_dev->hw_delay.init_delay > 0) {
         OsalMSleep(panel_dev->hw_delay.init_delay);
     }
-
+    HDF_LOGE("yktest PanelPrepare end");
     return HDF_SUCCESS;
 }
 
@@ -535,7 +544,7 @@ static int32_t PanelUnprepare(struct PanelData *panel)
 {
     int32_t ret;
     struct panel_ili9881_dev *panel_dev = NULL;
-
+    HDF_LOGE("yktest PanelUnprepare");
     panel_dev = ToPanelSimpleDev(panel);
 
     ret = PanelSendCmds(panel_dev->dsiDev, g_panelOffCode, \
@@ -551,12 +560,13 @@ static int32_t PanelUnprepare(struct PanelData *panel)
     if (panel_dev->hw_delay.unprepare_delay) {
         OsalMSleep(panel_dev->hw_delay.unprepare_delay);
     }
-
+    HDF_LOGE("yktest PanelUnprepare end");
     return HDF_SUCCESS;
 }
 
 static int32_t PanelInit(struct PanelData *panel)
 {
+    HDF_LOGE("yktest PanelInit");
     return 0;
 }
 
@@ -602,10 +612,12 @@ static void PanelResInit(struct panel_ili9881_dev *panel_dev)
     panel_dev->hw_delay.prepare_delay = 2; /* 2:prepare_delay */
     panel_dev->hw_delay.reset_delay = 100;  /* 100:reset_delay */
     panel_dev->hw_delay.unprepare_delay = 20;  /* 20:unprepare_delay */
+    HDF_LOGE("yktest PanelResInit end");
 }
 
 static int32_t PanelRequestGpio(struct panel_ili9881_dev *panel_dev)
 {
+    HDF_LOGE("yktest PanelRequestGpio");
     struct panel_ili9881_dev *pdev = panel_dev;
     pdev->enable_gpio = devm_gpiod_get_optional(&pdev->dsiDev->dev, "enable", GPIOD_ASIS);
     if (IS_ERR(pdev->enable_gpio)) {
@@ -622,6 +634,7 @@ static int32_t PanelRequestGpio(struct panel_ili9881_dev *panel_dev)
         HDF_LOGE("get reset_gpio fail");
         return HDF_FAILURE;
     }
+    HDF_LOGE("yktest PanelRequestGpio end");
     return HDF_SUCCESS;
 }
 
@@ -629,7 +642,7 @@ static int32_t PanelEntryInit(struct HdfDeviceObject *object)
 {
     struct device_node *panelNode = NULL;
     struct panel_ili9881_dev *panel_dev = NULL;
-
+    HDF_LOGE("yktest PanelEntryInit");
     panel_dev = (struct panel_ili9881_dev *)OsalMemCalloc(sizeof(struct panel_ili9881_dev));
     if (panel_dev == NULL) {
         HDF_LOGE("%s panel_dev malloc fail", __func__);
@@ -665,6 +678,7 @@ static int32_t PanelEntryInit(struct HdfDeviceObject *object)
         goto FAIL;
     }
     HDF_LOGI("%s success", __func__);
+    HDF_LOGE("yktest PanelEntryInit end");
     return HDF_SUCCESS;
 FAIL:
     OsalMemFree(panel_dev);