Re: [PATCH net-next] net: phy: micrel: add Asym Pause workaround

From: David Miller
Date: Wed Apr 17 2019 - 00:37:00 EST

From: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
Date: Tue, 16 Apr 2019 12:10:20 +0200

> The Micrel KSZ9031 PHY may fail to establish a link when the Asymmetric
> Pause capability is set. This issue is described in a Silicon Errata
> (DS80000691D or DS80000692D), which advises to always disable the
> capability. This patch implements the workaround by defining a KSZ9031
> specific get_feature callback to force the Asymmetric Pause capability
> bit to be cleared.
> This fixes issues where the link would not come up at boot time, or when
> the Asym Pause bit was set later on.
> Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>