[PATCH net 1/3] net: phy: realtek: add eee advertisement disable options

Florian Fainelli f.fainelli at gmail.com
Tue Nov 15 09:03:43 PST 2016

On 11/15/2016 08:30 AM, Andrew Lunn wrote:
> On Tue, Nov 15, 2016 at 03:29:12PM +0100, Jerome Brunet wrote:
>> On some platforms, energy efficient ethernet with rtl8211 devices is
>> causing issue, like throughput drop or broken link.
>> This was reported on the OdroidC2 (DWMAC + RTL8211F). While the issue root
>> cause is not fully understood yet, disabling EEE advertisement prevent auto
>> negotiation from enabling EEE.
>> This patch provides options to disable 1000T and 100TX EEE advertisement
>> individually for the realtek phys supporting this feature.
> Looking at the code, i don't see anything specific to RealTek
> here. This all seems generic. So should it be in phy.c and made a
> generic OF property which can be applied to any PHY which supports
> EEE.

Agreed. Just to be sure, Jerome, you did verify that with EEE no longer
advertised, ethtool --set-eee fails, right? The point is that you may be
able to disable EEE on boot, but if there is a way to re-enable it later
on, we would want to disable that too.

More information about the linux-amlogic mailing list