my lcd frequency is 50KHZ and 62HZ. the bmp image can be display at lcd, but wobble at screen, like some snowflake, unstable.

the configs and board/atmel/g45/9g45.c below:


vidinfo_t panel_info = {
vl_col: 1024,
vl_row: 768,
vl_clk: 65000000,
vl_sync: ATMEL_LCDC_INVLINE_INVERTED |
ATMEL_LCDC_INVFRAME_INVERTED,
vl_bpix: 4,
vl_tft: 1,
vl_hsync_len: 64,
vl_left_margin: 229,
vl_right_margin:26,
vl_vsync_len: 6,
vl_upper_margin:33,
vl_lower_margin:4,
mmio: AT91SAM9G45_LCDC_BASE,
};


/* LCD */
#define CONFIG_LCD
#define CONFIG_CFB_CONSOLE
#define LCD_BPP LCD_COLOR16
#define CONFIG_VIDEO
#define CONFIG_VIDEO_LOGO
#define CONFIG_VIDEO_BMP_LOGO
#define VIDEO_FB_LITTLE_ENDIAN
#define CFG_WHITE_ON_BLACK 1
#define CONFIG_ATMEL_LCD 1
#define CONFIG_ATMEL_LCD_BGR555 1
#define CFG_CONSOLE_IS_IN_ENV 1
#define G45_LCD_BUFFER 0x73000000

when i set vl_col=1360, vl_row=768, the display failed.
my question is, why the screen unstable, something like snowflake display, i want to get clear and cleanly display. now, i don't have any idea.

thanks for your help, forgive my poor english.