i.MX6QP: Configuring the HDMI for YUV422

[jean-christoph6]

Hi,

I'm using the HDMI output through the framebuffer device on the i.MX6QP.

I have a YUV422 video source and I'd like to emit it on the HDMI without conversion. HDMI 1.4 supports YUV422 pixel encoding.

As for now, the HDMI always outputs a RGB444 stream. 

I've tried setting fb_var_screeninfo.nonstd before passing it to ioctl(FBIOPUT_VSCREENINFO), but it seems that any non-zero value provokes the ioctl to fail.

I've also tried giving the kernel argument "mxcfb1:dev=hdmi,1920x1080M@60,if=UYVY16", but it doesn't change anything.

Thanks for your help.

[Bio_TICFSL]

Hi Jean-Christophe

The i.MX6 not support YUV222 format, the supported format are:

 YUV422P, YUV420

[jean-christoph6]

Hi Bio_TICFSL,

How do I configure the HDMI for YUV422P then?