topic pslash on multiple displays in i.MX Processors

pslash on multiple displays

andreykononov — Wed, 15 Mar 2017 13:29:22 GMT

I'm using sabreai in my project and connect 3 displays on it (2*LVDS+HDMI). When board starting, psplash show picture only on main screen, is it posible to show same or other picture on other monitors?

PS:

board: Sabre AI I.MX6QP

Os: # uname -a
Linux MMC 4.1.15-2.0.0+gb63f3f5 #5 SMP PREEMPT Tue Mar 14 10:59:16 MSK 2017 armv7l armv7l armv7l GNU/Linux

Re: pslash on multiple displays

Bio_TICFSL — Wed, 22 Mar 2017 16:57:10 GMT

Hi Andrey,

Never tried on three display, however If you are using 2 LVDS displays then there is a dual-mode setting in the LDB which clones the data from one display to other.

To enable it you will have to add the 'dual-mode' property in LDB's device tree node.

hope this helps

Re: pslash on multiple displays

claymontgomery — Wed, 22 Mar 2017 22:33:45 GMT

The FBDEV environment variable controls which display receives the output graphics from psplash. You could modify psplash-fb.c to replicate the images on all the displays.

fbdev = getenv("FBDEV");
if (fbdev == NULL)
fbdev = "/dev/fb0";

Regards, Clay

Re: pslash on multiple displays

andreykononov — Thu, 23 Mar 2017 04:56:12 GMT

very interesting, i'l try