Most of our staff are on vacation for the holidays. I will request one of them take a look when they return after the new year. In the meantime, perhaps one of these topics will be useful to you. The one references ZC702, which of course is not ZedBoard, but it does use the same Zynq-7000 family device.
There are no good examples of doing what you are doing on PicoZed hardware, although it should be possible to achieve by porting one of the other examples to your PicoZed hardware.
I am not as familiar with the Yocto flow but we frequently use the PetaLinux flow which is built on top of Yocto. I am not sure how Yocto uses the .HDF to generate settings for FSBL and devicetree.
Which HDL are you using in your design to attache the PS to the ADV7511 hardware? If it is the HDL to AXI HDMI, make sure that you have the appropriate devicetree entries for framebuffer output:
Thank you Kevin,
I know you mentioned you're not familiar with Yocto, but how do you append the devicetree with the information you provided in the link? I think that is the information I am missing.
Not sure how a pure Yocto build would work but PetaLinux uses a Yocto build recipe to build a devicetree with additional user input which comes from the system-user.dtsi file. For more information on this, take a look at this page here:
A Yocto vs. PetaLinux build operate the same way. I supplied the system-user.dtsi file with the appropriate device-tree entries (system-user.dtsi and device-tree.bbappend files are attached). However, this did not solve my initial issue.
Thank you Bryan,
I have looked at the references you provided but I do not believe these answer my questions.
Has your people returned from their vacation yet? I would very much like to know their thoughts.
Have you solved your problem?
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!