On Sun, Mar 06, 2016 at 01:09:40AM +0300, Sergei Shtylyov wrote:
> Hello.
>
> I have a need to de-assert the active-low PHY hardware reset
> signal (mapped to a GPIO) before the MDIO bus scansince it's left
> asserted by the bootloader (U-Boot).
Hi Sergei
There is a thread about power sequencing for USB devices going on at
the moment. You have a very similar issue. The solution should be
generic enough to apply to MDIO busses as well as USB busses.
Search for:
[PATCH 1/3] usb: core: add power sequence for USB devices
Andrew
