Re: [PATCH net 4/4] net: bcmgenet: reset 40nm EPHY on energy detect

[Florian Fainelli]

On 10/16/2019 4:06 PM, Doug Berger wrote:
> The EPHY integrated into the 40nm Set-Top Box devices can falsely
> detect energy when connected to a disabled peer interface. When the
> peer interface is enabled the EPHY will detect and report the link
> as active, but on occasion may get into a state where it is not
> able to exchange data with the connected GENET MAC. This issue has
> not been observed when the link parameters are auto-negotiated;
> however, it has been observed with a manually configured link.
> 
> It has been empirically determined that issuing a soft reset to the
> EPHY when energy is detected prevents it from getting into this bad
> state.
> 
> Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
> Signed-off-by: Doug Berger <opendmb@xxxxxxxxx>

Acked-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
-- 
Florian