[U-Boot] [PATCH] sun8i_emac: Fix mdio read sequence

[Jagan Teki]

On Wed, Nov 16, 2016 at 7:10 AM, Andre Przywara <andre.przywara at arm.com> wrote:
> From: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
>
> To send a parametrized command to the PHY over MDIO, we should write
> the data first, the trigger the execution by the command register
> write. Fix the access pattern in our MDIO write routine.
> Apparently this doesn't really matter with the Realtek PHY on the
> Pine64, but other PHYs (which require more setup) will choke on
> the wrong order.

Any tested-by this on non-realtek, because I always remember to have
CMD with DATA sequence for mdio write for most of the PHY's and ie
default sequence though.

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.