Hello,
Our system is based on the AT91SAM9263 and has a Hitachi LCD screen in
portrait mode. The U-Boot splash screen is not displaying correctly. The
left hand half is correct, but the right hand half either flickers or
breaks up completely into a pattern of vertical lines. The whole screen
works correctly under Linux.
The screen configuration appears to match other U-Boot configurations
for this hardware.
U-Boot - our board:
vidinfo_t panel_info = {
vl_col: 240,
vl_row: 320,
vl_clk: 4965000,
vl_sync: ATMEL_LCDC_INVLINE_INVERTED |
ATMEL_LCDC_INVFRAME_INVERTED,
vl_bpix: 3,
vl_tft: 1,
vl_hsync_len: 5,
vl_left_margin: 10,
vl_right_margin:33,
vl_vsync_len: 1,
vl_upper_margin:8,
vl_lower_margin:0,
mmio: AT91SAM9263_LCDC_BASE,
};
U_Boot board-at91sam9263ek:
vidinfo_t panel_info = {
vl_col: 240,
vl_row: 320,
vl_clk: 4965000,
vl_sync: ATMEL_LCDC_INVLINE_INVERTED |
ATMEL_LCDC_INVFRAME_INVERTED,
vl_bpix: 3,
vl_tft: 1,
vl_hsync_len: 5,
vl_left_margin: 1,
vl_right_margin:33,
vl_vsync_len: 1,
vl_upper_margin:1,
vl_lower_margin:0,
mmio: AT91SAM9263_LCDC_BASE,
};
Linux - our hardware:
/* Hitachi TX07D9VM1CAB - 2.4", 320x240 */
static struct fb_videomode at91_tft_vga_modes[] = {
{
.name = "TX07D9VM1CAB @ 60",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = KHZ2PICOS(4965),
.left_margin = 10,
.right_margin = 0,
.upper_margin = 8,
.lower_margin = 0,
.hsync_len = 5,
.vsync_len = 1,
.sync = FB_SYNC_HOR_HIGH_ACT |
FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED,
},
};
Changing the settings for our board to be exactly the same as
board-at91sam9263ek does not resolve the problem.
Any clues as to where else to look would be very much appreciated.
Thanks,
--
Chris Isbell
Systems Integration Manager, CDSRail
Fareham, Hampshire, UK.
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