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JakeJ's avatar
JakeJ
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4 years ago

Cyclone V Frame Buffer II - problem with device Tree and with understanding the address map

Hi, I’m trying to display something via VGA on linux system without desktop (the final goal is to launch Qt app writing to /dev/fb). I’m confused about how to instantiate Frame Buffer II (alt_vip_cl_...
aikeu's avatar
aikeu
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4 years ago

Hi JakeJ,


Any new follow up for this issue?


Thanks.

Regards,

Aik Eu


JakeJ's avatar
JakeJ
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4 years ago

Hi @aikeu

I finally got it working. The problem presented previously (with memory allocation during kernel module initialization) disappeared when I switched to linux 5.4-lts version - I had been using 5.12 or 5.11 before. Then I read IP's documentation more carefully and I realized that another blocks are needed. Now I have to generate SDK for Qt in Yocto and try to write some app.

Current Platform Designer project looks like this (maybe it will help someone):

Thanks.

Regards,

Jake