Re: [PATCH net-next v4 00/23] net: add EEE support for KSZ9477 and AR8035 with i.MX6

[Vladimir Oltean]

On Wed, Feb 01, 2023 at 03:58:22PM +0100, Oleksij Rempel wrote:
> With this patch series we provide EEE control for KSZ9477 family of switches and
> AR8035 with i.MX6 configuration.
> According to my tests, on a system with KSZ8563 switch and 100Mbit idle link,
> we consume 0,192W less power per port if EEE is enabled.

What is the code flow through the kernel with EEE? I wasn't able to find
a good explanation about it.

Is it advertised by default, if supported? I guess phy_advertise_supported()
does that.

But is that desirable? Doesn't EEE cause undesired latency for MAC-level
PTP timestamping on an otherwise idle link?