i.MX ProcessorsのトピックRe: Duall display(LVDS +VGA ) problem

Duall display(LVDS +VGA ) problem

billchen — Sat, 25 May 2013 07:22:43 GMT

My board is imx6dl sabresd board, I tried a lot to make LVDS + WVGA dual diaplay successful, but I failed ,

Is there anyone can give me some advice?

Re: Duall display(LVDS +VGA ) problem

billchen — Tue, 28 May 2013 07:26:42 GMT

the VGA of my board is from DISP0(RGB24 interface), I had already successfully used VGA as single display screen with

uboot bootargs : console=ttymxc0,115200 init=/init video=mxcfb0:dev=lcd,1280x720M@60,if=RGB24,bpp=32,

and I also had had HDMI +LVDS by using uboot bootargs :console=ttymxc0,115200 init=/init rw video=mxcfb0:dev=ldb,1024x600M@60 video=mxcfb1:dev=hdmi,1920x1080M@60 video=mxcfb2:off fbmem=10M,28M vmalloc=512M fb0base=0x27b00000

but when I wanted to uboot bootargs as :console=ttymxc0,115200 init=/init rw video=mxcfb0:dev=ldb,1024x600M@60 video=mxcfb1:dev=lcd,1280x720M@60,if=RGB24,bpp=32 , I failed to get LVDS + VGA dual display.

Re: Duall display(LVDS +VGA ) problem

admin — Thu, 06 Feb 2014 21:10:49 GMT

Hi Bill,

Please refer to these posts for input on dual displays in Android - https://community.freescale.com/search.jspa?q=*dual+display*+*android*. Feel free to respond if these references do not help solve your issue.

Re: Duall display(LVDS +VGA ) problem

billchen — Tue, 29 Apr 2014 09:20:46 GMT

Hi, Grant:

Thanks for your reply, althrough I've solved it, maybe I can find more by searching this .

Bill

Re: Duall display(LVDS +VGA ) problem

billchen — Wed, 17 Sep 2014 09:05:52 GMT

Dear Grant:

WE HAVE been successful in dual-display with lvds + VGA on android 4.0.4 , now, we updated to android 4.4.2 , then I

found we can not be successful in the lvds + VGA dual display issue . And we found the dual dispaly setting already was removed , but we used this to achieve our LVDS + VGA dual-dispaly. So how can we deal with this problem on android 4.4.2 ,

this is urgent , I hope you can help us