AnsweredAssumed Answered

Configure two parallel RGB displays on imx6dl using open-embedded and DTS

Question asked by Tomáš Juřena on Oct 25, 2016

Hello everyone,

I am trying to setup two parallel RGB displays on iMX6DL. I modified the DTS file to add second display pinout, but after compilation, I get this output and display does not work.

root@colibri-imx6:~# dmesg | grep fb

[    0.000000] Kernel command line: enable_wait_mode=off galcore.contiguousSize=50331648 ip=off root=/dev/mmcblk0p2 rw,noatime rootfstype=ext3 rootwait fec_mac=00:14:2d:4a:58:ba consoleblank=0 no_console_suspend=1 console=tty1 console=ttymxc0,115200n8 video=mxcfb0:dev=lcd,1024x600M@60,if=RGB24 video=mxcfb1:dev=lcd,1024x600M@60,if=RGB24 fbmem=64M

[    0.139929] fbcvt: Aspect ratio not CVT standard

[    0.139963] fbcvt: 1024x600@60: CVT Name - Not a CVT standard - 0.614 Mega Pixel Image

[    0.140008] mxc_sdc_fb fb.18: registered mxc display driver lcd

[    0.145167] mxc_sdc_fb fb.18: 1024x600 h_sync,r,l: 104,40,144  v_sync,l,u: 10,11,3 pixclock=49000000 Hz

[    0.196849] mxc_sdc_fb fb.18: 1024x600 h_sync,r,l: 104,40,144  v_sync,l,u: 10,11,3 pixclock=49000000 Hz

[    0.254817] fbcvt: Aspect ratio not CVT standard

[    0.257061] fbcvt: 1024x600@60: CVT Name - Not a CVT standard - 0.614 Mega Pixel Image

[    0.261582] mxc_sdc_fb fb.19: registered mxc display driver lcd

[    0.263928] mxc_sdc_fb fb.19: ipu0-di0 already in use

[    0.266212] mxc_sdc_fb: probe of fb.19 failed with error -16

[    4.070499] platform caam_sm: [0016] a1 87 2f b9 ae 30 fb 6e

Used DTS file is attached.

Does anyone see any error? Is it possible to setup two display outputs just by rewriting DTS file or do I have to rewrite something in the kernel?

I am kinda new to iMX world so please forgive me if it is a basic question and I will be glad for any hint.

 

P.S.: I use Toradex colibri-imx6dl module with custom carrier board, OE version v2.6B2 and kernel version 3.14.52-v2.6b2+g9ace52b

Original Attachment has been moved to: imx6dl-rayservice.dts.zip

Outcomes