Boot LED on customized imx8mp board

gaurav_bankar — Thu, 13 Jul 2023 07:52:06 GMT

Hello,

I have a customized imx8mp board and I want to blink a Boot LED during boot process and turn it off after login ( or boot process is ended ). The LED is connected on GPIO line.

I was able to blink the LED by mentioning it in the corresponding board.c file of U-boot. I am not able to turn it off after boot process ends.

Does anyone has any idea how to do it?

Re: Boot LED on customized imx8mp board

Dhruvit — Thu, 13 Jul 2023 09:20:23 GMT

Hi @gaurav_bankar,

I hope you are doing well.

One can create a custom script (that turns off led ) and put that into /etc/profile.d/

e.g.

ledturn_off.sh

#! /bin/sh # turn off led gpio gpioset -c gpiochip<x> <pin>=0

# chmod 744 ledturn_off.sh

# mv ledturn_off.sh /etc/profiles.d/

=> One can also create a yocto recipe to automate the above steps.

Please specify the gpio number for led and whether led is configured using a led class or as normal gpio.

Thanks & Regards,
Dhruvit Vasavada

topic Re: Boot LED on customized imx8mp board in i.MX Processors

Boot LED on customized imx8mp board

Re: Boot LED on customized imx8mp board