device-tree vs gpio-leds gpio_blink_set

[Arnaud Patard (Rtp)]

Hi,

I'm not yet fully familiar with DT so I thought that adding support for 
device-tree on some kirkwood drivers would help, so I wrote a quick patch
to add device-tree support into kirkwood/orion/... GPIO (patch for rfc
in next mail). Unfortunately, I'm facing a problem that I don't know how
to solve.

The kirkwood/orion gpio have a bit that allows "gpio blinking" (I think
it a square signal but the manual doesn't say it clearly) and it's used
on dns323 and iconnect. When trying to use DT to declare the leds-gpio
stuff, I've noticed that there's no way clearly documented to set the
gpio_blink_set() hook. In fact, it even looks like it's not supported at
all, which seems to be a regression compared to non-DT support.
Does anyone know how to solve that ?

Thanks,
Arnaud