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Message-ID: <b48fa0bd-18e1-4268-9e7a-8199f5d180e8@linaro.org>
Date: Wed, 31 Jan 2024 08:45:49 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Vineeth Karumanchi <vineeth.karumanchi@....com>,
 Andrew Lunn <andrew@...n.ch>
Cc: nicolas.ferre@...rochip.com, claudiu.beznea@...on.dev,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
 conor+dt@...nel.org, linux@...linux.org.uk, netdev@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, git@....com
Subject: Re: [PATCH net-next 2/3] dt-bindings: net: cdns,macb: Add
 wol-arp-packet property

On 31/01/2024 08:39, Vineeth Karumanchi wrote:
> Hi Andrew,
> 
> 
> On 31/01/24 6:56 am, Andrew Lunn wrote:
>> On Tue, Jan 30, 2024 at 04:18:44PM +0530, Vineeth Karumanchi wrote:
>>> "wol-arp-packet" property enables WOL with ARP packet.
>>> It is an extension to "magic-packet for WOL.
>>
>> It not clear why this is needed. Is this not a standard feature of the
>> IP? Is there no hardware bit indicating the capability?
>>
> 
> WOL via both ARP and Magic packet is supported by the IP version on ZU+ 
> and Versal. However, user can choose which type of packet to recognize 
> as a WOL event - magic packet or ARP. The existing DT binding already 
> describes one entry for wol via magic packet. Hence, adding a new packet 
> type using the same methodology.

And why would this be board-level configuration? This looks like OS policy.

Best regards,
Krzysztof


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