diff --git a/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx.c b/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx.c
index 17f7b2a264728e31d33fdd00a9e0431e1efc1566..b25d275be3913eb807a04dbfae45026f700a468d 100755
--- a/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx.c
+++ b/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx.c
@@ -33,6 +33,8 @@
 #define DTYPE_DCS_WRITE1            0x15 // 0x23  short write, 2 parameter
 #define DTYPE_DCS_LWRITE            0x39 // 0x29 long write
 
+extern void pwm_mipi_lcm();
+
 typedef struct {
     combo_dev_cfg_t dev_cfg;
 } mipi_tx_dev_ctx_t;
@@ -502,6 +504,7 @@ int mipi_tx_display(unsigned int vosync)
     udelay(10000); /* delay 10000 us for the stable signal */
     PLE_PRIVATE_VO_InitScreen480x960();
     udelay(10000);
+    pwm_mipi_lcm();
 
     /* step 3 : enable mipi_tx controller. */
     ret = mipi_tx_ioctl(HI_MIPI_TX_ENABLE, (unsigned long)0);
diff --git a/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx_hal.c b/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx_hal.c
index 04fd0e86f09735da1f7a08c3c3f8087ed11412c5..8173c433e7ff51d8e6aa06cf329b6fea8b224bcb 100755
--- a/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx_hal.c
+++ b/u-boot-2020.01/product/hiosd/mipi_tx/hi3516cv500/mipi_tx_hal.c
@@ -958,7 +958,7 @@ static void reset_mipi_lcm()
     mdelay(120);
 }
 
-static void pwm_mipi_lcm()
+void pwm_mipi_lcm()
 {
     unsigned long mipi_tx_multip_gpio_addr;
 
@@ -976,7 +976,6 @@ static void pwm_mipi_lcm()
 int mipi_tx_drv_init(void)
 {
     int ret;
-    pwm_mipi_lcm();
     reset_mipi_lcm();
 
     ret = mipi_tx_drv_reg_init();