Lime2 device start by itself

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Hey all,

 

I'm using U-boot 2017-09 and Kernel 4.13. I'm looking for a way to disable the board auto start. I'm explaining.

 

When you plug the power in, the board start by itself and U-boot does the rest. I would like to disable this feature in order to be able to plug in the power, charge the battery if needed and start the board with the regular push button.

 

Is there any tweak to be done in the Device Tree ?

 

Thanks

Florian