topic Re: Prioritize the GPIO interrupt in i.MX Processors

Prioritize the GPIO interrupt

AMBh — Tue, 16 Jan 2024 07:00:48 GMT

I am using IMX8M-Mini controller on Linux platform. In my driver code GPIO is acting as interrupt to handle button press event.

But now i want to prioritize the interrupts for each button.

How to achieve this?

Re: Prioritize the GPIO interrupt

joanxie — Tue, 16 Jan 2024 09:40:10 GMT

But now i want to prioritize the interrupts for each button.

>do you mind sharing more detailed information for this use case? do you mind sharing your code to show your use case? and what bsp version do you use?

Re: Prioritize the GPIO interrupt

AMBh — Tue, 16 Jan 2024 10:03:40 GMT

Hi,

See the attachment. I want to make sure that when both button pressed at a time. Both interrupts can be served.

I observed that one of them doesn't serve sometimes.

Version- 5.4.70

Re: Prioritize the GPIO interrupt

AMBh — Thu, 18 Jan 2024 12:29:45 GMT

Hi,

Any updates?

Re: Prioritize the GPIO interrupt

joanxie — Sun, 21 Jan 2024 08:47:58 GMT

pls check if your dts settings is correct or not, also double check the IOMUX settings, you can refer to the document as below

"https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Enable-RGB-LED-s-and-push-buttons-on-8MIC-RPI-MX8-board/ta-p/1401063"

"https://www.emcraft.com/som/vf6/controlling-gpio-from-linux"

you also can find the example how to test gpio

Re: Prioritize the GPIO interrupt

AMBh — Mon, 22 Jan 2024 09:42:41 GMT

Hi,

Can you tell me how to give priority to the GPIO using as an interrupts.

As per my understanding every GPIO can be configured as interrupt As they have separate IRQ numbers assigned.

So is there any way to prioritize them?

Re: Prioritize the GPIO interrupt

joanxie — Wed, 24 Jan 2024 09:45:58 GMT

yes, GPIO can be configured as interrupt, if you refer to the patch I sent to you

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Enable-RGB-LED-s-and-push-buttons-on-8MIC-RPI-MX8-board/ta-p/1401063

you can find "interrupts" which is defined in the dts file, tell you how to set it proper