LOAN IO default value during power up

[Fjato]

Dear all,

I am using a Cyclone V SoC. Is there a way to set a default value for IOs configured in QSYS as LOAN IOs during power up (preloader and uboot)?

Thank you and best regards

[Farabi]

Hi, 

I am Farabi who will be supporting your request. 

Loaner IO will be driven to logic '1' during power up. Unfortunately, there is no feature to set these loaner IO pins to other state like other IO pins. 

You can find details here: https://www.intel.com/content/www/us/en/support/programmable/articles/000079815.html

regards,
Farabi

[Farabi · Accepted solution]

Hi, 

this solution mention on how to make the loan IO pins to 'tristate' instead of default value which is logic '1' during power up. 

https://www.intel.com/content/www/us/en/support/programmable/articles/000079815.html

regards,

Farabi

[Fjato]

Thank you very much for your answer. I will try to implement the workaround. Can you tell me how to call sysmgr_pinmux_init()?

Thank you very much and best regards

[Fjato]

Thanks again, the workaround works. I was able to set the appropriate GPLMUX register in the System Manager Module from the application to 0 to set them to LOAN IOs.

[Farabi]

Hi,

We do not receive any response from you to the previous question/reply/answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.

regards,

Farabi

[AlHill]

@JackAward   Probably a good time to provide a chatgpt answer to a two-year-old thread.

Doc (not an Intel employee or contractor)
[If you find any Intel driver you might need, download and save it now.]