Imx6q convert LVDS to VGA output

we useths8136VGAThe encoder is connected to the Imx6qDisp0_dat0 ~ dat23. When resolution Less than or equal to 720p , image good quality

however , If the solution is greater than 720p , pixels will run on 100MHz of The clock. We only need to modify  IPU_DISP.C as follows:

uint32_t rounded_pixel_clk_upper, rounded_pixel_clk_lower;
...
if (Rounded_pixel_clk < 100000000) {
Rounded_pixel_clk_upper = pixel_clk + pixel_clk/200;
Rounded_pixel_clk_lower = pixel_clk-pixel_clk/200;
} else {
Rounded_pixel_clk_upper = pixel_clk + pixel_clk/50000;
Rounded_pixel_clk_lower = pixel_clk-pixel_clk/50000;
}
if (!sig.int_clk && (rounded_pixel_clk >= rounded_pixel_clk_upper) | |
(ROUNDED_PIXEL_CLK <= rounded_pixel_clk_lower))) {
dev_dbg (Ipu->dev, "try IPU ext di clk\n");
...

then modify MXC_LCDIF.C:
/* 800x480 @ 60 Hz, pixel CLK @ 32MHz */
"SEIKO-WVGA", 800, 480, 29850, 89, 164, 23, 1 0, Ten,
Fb_sync_clk_lat_fall,
fb_vmode_noninterlaced,
0,},
{
/* 1280x1024 @ Hz, pixel CLK @ 108MHz * /
"SXGA", Max, 9231, 248, 1, 3, Fb_sync_hor_high_act | Fb_sync_vert_high_act,
fb_vmode_noninterlaced,
Fb_mode_is_vesa},
{
/* 1920x1080 @ Hz, pixel CLK @ 148.5MHz */
"1080P60", Max, 1920x1080, 7692, 136, 336, 3, 6, Fb_sync_hor_high_act | Fb_sync_vert_high_act,
fb_vmode_noninterlaced,
Fb_mode_is_vesa},
{
/* 1920x1200 @ Hz, pixel CLK @ 193.16MHz */
"WUXGA", 5175, 336, 1, 208, 3,
Fb_sync_hor_high_act | Fb_sync_vert_high_act,
fb_vmode_noninterlaced,
Fb_mode_is_vesa},

You are done, the resolution will be displayed when the boot is set.

Imx6q convert LVDS to VGA output