GPIO changes at flashing time

[Tanushree]

Hello,

We are using imx8dxl processor in our custom board.
We are facing an issue while flashing. The issue one celular module is connected to the processor GPIO. i.e power to the cellular module. if we isolate the GPIO and disconnect the USB from the cellular module then its flashing correctly. How to disable the GPIO in flashing time. During flashing time its starts from initramfs, can we disable in initramfs and how to do that?

[jimmychan]

Are you using UUU to program your target board?

[Tanushree]

Hello @jimmychan 

Yes we are using UUU tool for flashing

[jimmychan]

Do you have the debug console? when UUU is running, you could see the u-boot will up at the console. Then you could stop the u-boot and load another dtb file which is disable the gpio.