i.MX93 PWM setting and control for IR LED

[EulerCsLin]

Dear,

I am working on i.MX93 EVK. We want to have PWM function for IR LED control from Base Board (BB).
We currently are working on A55 processor with Linux OS. We would like to know if we can configure the IO pins (such as EXT_GPIO_IO05) in part J1001 on BB for PWM usage?

Of course, you have any other suggestion for the same purpose please let us know.

[Manuel_Salas]

Hello @EulerCsLin 

I hope you are doing well.

It should be possible, I tested it with cortex M33 using the EXP_GPIO_IO05 in BB.

About of the usage on Cortex A, you can refer to device tree of i.MX8MM to get an example.

Just you need to modify the pinctrl of your device tree to get the EXP_GPIO_IO05 to work at tmp.

Best regards,

--... ...--

Salas.

[EulerCsLin]

Hi @Manuel_Salas ,



Sincerely, I appreciate for your answer.
I will try to use i.mx configuration tool and the example you provided to configure Linux device tree.

Thanks again.
Best Wishes.