On Tue, Dec 05, 2017 at 10:29:52AM +0100, Thomas Petazzoni wrote:
> Not all variants of the sh_eth hardware have Gigabit
> support. Unfortunately, the current driver doesn't tell the PHY about
> the limited MAC capabilities. Due to this, if you have a Gigabit
> capable PHY, the PHY will advertise its Gigabit capability and
> establish a link at 1Gbit/s, even though the MAC doesn't support it.
>
> In order to avoid this, we use the recently introduced
> phy_set_max_speed() to tell the PHY to not advertise speed higher than
> 100 MBit/s.
>
> Tested on a SH7786 platform, with a Gigabit PHY.
>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Andrew
