imx6q dual HD display problem

[maciejka_miercz]

Hello All,

I'm using IMX6-Quad processor with board that has dual-channel lvds and hdmi output. The problem that i couldn't resolv, is that when i setup dual-channel lvds output ( 1980x1020 ) i cannot use the hdmi output ( 1080p ).

The kernel that i'm using is the 3.14.38

The linux distribution is not important.

Is there anyone that use dual-channel lvds display with fullHD resolution with hdmi fullHD output ?

Greetings,

Maciej Kaźmierczak

[Bio_TICFSL]

Hi Maciej,

The speed of i.MX6 LVDS serial ports is up to 165 Mpixels/sec for single channel or 85 Mpixels/sec for dual channel. So it allows  1920x1200 at 60 fps for single channel and 1366x768 at 60 fps for dual channel.

The default Android image supports dual display (LVDS + HDMI) by the following commands:
Under the U-Boot prompt, please set the following U-Boot environment var.
U-Boot > setenv bootargs console=ttymxc0,115200 init=/init rw video=mxcfb0:dev=ldb,LDBXGA, if=RGB666,bpp=16 fb0base=0x27b00000 video=mxcfb1:dev=hdmi,1920x1080M@60 fbmem=10M,28M  video=mxcfb2:off vmalloc=512M androidboot.console=ttymxc0

Please also refer to

https://community.freescale.com/docs/DOC-93449
https://community.freescale.com/message/317168

Regards