[LEDE-DEV] [PATCH 2/3] ramips-mt7621: add GPIO-config for Ubiquiti-EdgeRouterX(-SFP)

[Mathias Kresin]

06.05.2017 14:31, Sven Roederer:
> On Freitag, 5. Mai 2017 14:32:12 CEST Mathias Kresin wrote:
>> Is it necessary to control the GPIOs from userspace/via config files?
>> If not, add a gpio_export node to the dts and set the output value
>> this way [0].
>>
 > Or is there something better?

Yes there is. Please add a gpio-export node to the dts (see 
target/linux/ramips/dts/A5-V11.dts). It does basically the same but 
allows to set the polarity and uses the gpio-export,name for the actual 
export. And it doesn't add userspace stuff to the image which is 
included for all images.

>
> To have it in userspace is the best (only?) option to enable / disable or
> power-cycle the attached PoE-equipment.

The question is more or less whether it is necessary to disable PoE for 
the ports. The gpio-export node for example, is used in most cases for 
enabling something like usb power.

I have no strong opinion on this and I'll leave it up to you to add what 
you are the opinion is the best.

Mathias