hm60x: Fix white screen bug.bootloader_hifimanhm60x_v4

Lcd should be reseted after power is supplied.

Change-Id: I2a47ffb7d9b20d9ef2ad90aee15f4ada2fdd7f2e

1 files changed, 11 insertions, 0 deletions

diff --git a/firmware/target/arm/rk27xx/lcd-hifiman.c b/firmware/target/arm/rk27xx/lcd-hifiman.c
index 1c42921a42..58f957b613 100644
--- a/firmware/target/arm/rk27xx/lcd-hifiman.c
+++ b/firmware/target/arm/rk27xx/lcd-hifiman.c
@@ -30,6 +30,15 @@
 
 static bool display_on = false;
 
+static void reset_lcd(void)
+{
+    GPIO_PCCON |= (1<<7);
+    GPIO_PCDR &= ~(1<<7);
+    udelay(10);
+    GPIO_PCDR |= (1<<7);
+    udelay(5000);
+}
+
 void lcd_v1_display_init(void)
 {
     unsigned int x, y;
@@ -286,6 +295,7 @@ static void lcd_v2_update_rect(int x, int y, int width, int height)
 
 void lcd_display_init(void)
 {
+    reset_lcd();
     identify_lcd();
     if (lcd_type == LCD_V1)
         lcd_v1_display_init();
@@ -323,6 +333,7 @@ void lcd_update_rect(int x, int y, int width, int height)
 
 void lcd_display_init(void)
 {
+    reset_lcd();
     lcd_v1_display_init();
 }