[U-Boot] [PATCH v1] sun8i_emac: configure PHY reset GPIO via DM

[Dr. Philipp Tomsich]

> On 21 Feb 2017, at 18:57, Maxime Ripard <maxime.ripard at free-electrons.com> wrote:
> 
> On Fri, Feb 17, 2017 at 06:42:42PM +0100, Philipp Tomsich wrote:
>> This ports the support for configuring a GPIO for resetting the
>> Ethernet PHY (incl. such details as the reset polarity and
>> pulse-length) from the Designware driver.
> 
> Isn't that a property of the PHY itself, and not the MAC ?

It’s the MAC trying to signal “power-up the PHY”.
So we modelled it like a “wake-up output” from the MAC...

>> For easier migration for the Designware driver, the prefix of DTB
>> entries has simply been changed from 'snps,' to 'allwinner,':
>> i.e. 'snps,reset-gpio' became 'allwinner,reset-gpio'.
> 
> The upstrmea driver will use the snps prefix.

In fact I have a patch floating around here, which merges the sun8i_emac
back into designware.c (there really isn’t any difference) and then uses the
snps,reset-gpio.

Given that I found it a bit less appropriate to have that patch out first, this
is the consensus change to fall back onto in case the bigger change gets
shot down.

Cheers,
Philipp.