[PATCH net-next 2/2] net: stmmac: dwmac-imx: add support for PHY WOL
Florian Fainelli
f.fainelli at gmail.com
Wed Mar 6 09:41:46 PST 2024
On 3/6/24 09:24, Catalin Popescu wrote:
> Add support for PHY WOL capability into dwmac-imx MAC driver.
> This is required to enable WOL feature on a platform where MAC
> WOL capability is not sufficient and WOL capability built into
> the PHY is actually needed.
>
> Signed-off-by: Catalin Popescu <catalin.popescu at leica-geosystems.com>
Nope, this is not about how to do this. You use a Device Tree property
as a policy rather than properly describe your systems capabilities.
What sort of Wake-on-LAN do you want to be done by the PHY exactly? Does
the PHY have packet matching capabilities, or do you want to wake-up
from a PHY event like link up/down/any interrupt?
If the former, then you would need to interrogate the PHY driver via
phy_ethtool_get_wol() to figure out what Wake-on-LAN modes it is capable
of supporting and then make a decision whether to prioritize Wake-on-LAN
from the PHY or the MAC, or maybe only the PHY can actually wake-up the
system in your case.
If the latter, then you need to add support for WAKE_PHY to the stmmac
driver.
pw-bot: cr
--
Florian
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