8 Replies Latest reply on Sep 16, 2020 2:46 AM by dong0922

    Petalinux + Zedboard HDMI Output




      I am fairly new to the Zedboard and just the Zynq chip in general.  I have followed several tutorials now to try to understand more about this board.


      However, I am now stumbling on creating a Yocto image using the Xilinx and Petalinux layers.


      I am following the the tutorial here (https://wiki.analog.com/resources/fpga/docs/build#folded_1 ) to generate the *.hdf file.


      I then reference this *.hdf file in my Yocto load (I have attached my BBLAYERS and LOCAL.CONF files for reference).


      I have then issued the command "bitbake virtual/kernel -c menuconfig" and enabled various things for the ADV7511 and Xilinx Framebuffer.


      I then build my linux image using the command "bitbake petalinux-image-full" and everything builds successfully.


      Note: I am using the "Rocko" branch of Yocto and all my layers are coming from Xilinx's github (https://github.com/Xilinx) - Build configuration also attached


      However, I am having an issue with the HDMI:

      1) No output is seen on the HDMI port

      2) In the log, I see the following print:


      Framebuffer /dev/fb0 not detected

      Boot splashscreen disabled


      Could someone explain to me the following:

      1) Can I use the *.hdf file referenced above in my Yocto build to enable the HDMI?

      2) Is there some additional kernel setup I am missing to enable the framebuffer and HDMI output?


      Thank you for your help!