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RGoem's avatar
RGoem
Icon for New Contributor rankNew Contributor
6 years ago

Undefined pin state prior to loading rbf

Hello everyone, I'm using a de0-nano-soc development board which has a Cyclone V including a HPS. I'm running U-Boot to load an rbf file at boot and then linux is ran. However when powering on the b...
FawazJ_Altera's avatar
FawazJ_Altera
Icon for Frequent Contributor rankFrequent Contributor
6 years ago

Is this pin related to FPGA I/O or HPS I/O ?

If it is HPS I/O, it is no effected by FPGA configuration. This happens after executing Preloader which configures HPS I/O pin settings such as weak-pullup or drive strength. these settings comes from Quartus when you generate the files, which might not be controlled by customer.

If it is FPGA I/O pin, I need to check with configuration engineer regarding this .

Thanks

RGoem's avatar
RGoem
Icon for New Contributor rankNew Contributor
6 years ago

Dear Fjuumaah,

Is there any update on this?