Re: [PATCH 2/4] lan78xx: Read initial EEE setting from Device Tree

From: Phil Elwell
Date: Thu Apr 12 2018 - 11:17:10 EST


Andrew,

On 12/04/2018 15:16, Andrew Lunn wrote:
> On Thu, Apr 12, 2018 at 02:55:34PM +0100, Phil Elwell wrote:
>> Add two new Device Tree properties:
>> * microchip,eee-enabled - a boolean to enable EEE
>> * microchip,tx-lpi-timer - time in microseconds to wait after TX goes
>> idle before entering the low power state
>> (default 600)
>
> Hi Phil
>
> This looks wrong.
>
> What should happen is that the MAC driver calls phy_init_eee() to find
> out if the PHY supports EEE. There should be no need to look in device
> tree.

If the driver should be calling phy_init_eee to initialise EEE operation then I'm fine
with that (although I notice that the TI cpsw calls phy_ethtool_set_eee but I don't see
it calling phy_init_eee). However, it sounds like I need to keep my DT toggle of the
EEE enablement and parameters downstream.

Phil