Access GPT capture on imx6ull from user space or module

[malj]

Hello, 

I am trying to understand if I am able to use GPT2 for input capture (counting sensor pulses) on my custom imx6 board. From the Linux Reference Manual I can read that GPT is used by linux to enter WFI mode, but I have also found sources saying it is fine to use GPT2?

Any help to clear this out would be appreciated, both if it is possible and how I would go about doing it. 

Best regards 

[Zhiming_Liu]

Hi @malj 

You can refer to this series of patches. Although they are based on the i.MX8MM, the approach is similar for the i.MX6ULL.

https://patchew.org/linux/20220210084335.1979778-1-jian.jiang@nxp.com/20220210084335.1979778-3-jian....

Best Regards,
Zhiming