request_irq failed at pn54x_probe - nxp nfc pn7150

[elavarasan]

hi,

we are using nxp nfc pn7150 eval board. while we trying to port it on android Oreo,

we are getting error "request_irq failed" after installing kernel module at pn54x_probe function. 

[ interrupt pin used is coming from a gpio expander ] …

returned with error code -22.

can someone help to fix this issue?

thanks,

elavarasan

[alassaneg]

@jimmychan , before making a request i think everyone take a look at the app note and make a little research on the internet before, so you're not helping at all

[jimmychan]

Basically, we cannot assume the customer known everything. If they mentioned they have read the document already in the question, then we will suggest another things. Else, we only can check from the some basic things and beginning of the development.

[jimmychan]

Hello,

Please follow this App. Note for the porting.

https://www.nxp.com.cn/docs/en/application-note/AN11690.pdf

Also, this is an example of PN7150 and i.MX8MM

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/PN7150-NFC-Controller-on-i-MX8M-mini-evk...