[U-Boot] [PATCH v5 1/3] net: phy: Optionally force master mode for RTL PHY

[Joe Hershberger]

On Fri, Mar 25, 2016 at 12:22 PM, Michael Haas
<haas at computerlinguist.org> wrote:
> This patch introduces CONFIG_RTL8211X_PHY_FORCE_MASTER. If this
> define is set, RTL8211x PHYs (except for the RTL8211F) will have their
> 1000BASE-T master/slave autonegotiation disabled and forced to master
> mode.
>
> This is helpful for PHYs like the RTL8211C which produce unstable links
> in slave mode. Such problems have been found on the A20-Olimex-SOM-EVB
> and A20-OLinuXino-Lime2.
>
> There is no proper way to identify affected PHYs in software as the
> RTL8211C shares its UID with the RTL8211B. Thus, this fix requires
> the introduction of an #ifdef.
>
> CC: fradav at gmail.com
> CC: merker at debian.org
> CC: hdegoede at redhat.com
> CC: ijc at hellion.org.uk
> CC: joe.hershberger at ni.com
>
> Signed-off-by: Michael Haas <haas at computerlinguist.org>
> Tested-by: Karsten Merker <merker at debian.org>

Acked-by: Joe Hershberger <joe.hershberger at ni.com>