From: Michael Walle <michael@walle.cc>
To: Rob Herring <robh@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Frank Rowand <frowand.list@gmail.com>
Subject: Re: [PATCH net-next 1/3] dt-bindings: net: add nvmem-mac-address-offset property
Date: Fri, 16 Apr 2021 00:27:46 +0200 [thread overview]
Message-ID: <fefde522146d18aa7f8fbb8fa698cb58@walle.cc> (raw)
In-Reply-To: <20210415215955.GA1937954@robh.at.kernel.org>
Am 2021-04-15 23:59, schrieb Rob Herring:
> On Wed, Apr 14, 2021 at 05:43:49PM +0200, Andrew Lunn wrote:
>> On Wed, Apr 14, 2021 at 05:26:55PM +0200, Michael Walle wrote:
>> > It is already possible to read the MAC address via a NVMEM provider. But
>> > there are boards, esp. with many ports, which only have a base MAC
>> > address stored. Thus we need to have a way to provide an offset per
>> > network device.
>>
>> We need to see what Rob thinks of this. There was recently a patchset
>> to support swapping the byte order of the MAC address in a NVMEM. Rob
>> said the NVMEM provider should have the property, not the MAC driver.
>> This does seems more ethernet specific, so maybe it should be an
>> Ethernet property?
>
> There was also this one[1]. I'm not totally opposed, but don't want to
> see a never ending addition of properties to try to describe any
> possible transformation.
Agreed, that stuff like ASCII MAC address parsing should be done
elsewhere. But IMHO adding an offset is a pretty common one (as also
pointed out in [1]). And it also need to be a per ethernet device
property.
-michael
[1]
https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20200920095724.8251-4-ansuelsmth@gmail.com/
next prev parent reply other threads:[~2021-04-15 22:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 15:26 [PATCH net-next 0/3] net: add support for an offset of a nvmem provided MAC address Michael Walle
2021-04-14 15:26 ` [PATCH net-next 1/3] dt-bindings: net: add nvmem-mac-address-offset property Michael Walle
2021-04-14 15:43 ` Andrew Lunn
2021-04-15 21:59 ` Rob Herring
2021-04-15 22:27 ` Michael Walle [this message]
2021-05-12 15:27 ` Michael Walle
2021-04-15 23:45 ` Florian Fainelli
2021-04-14 15:26 ` [PATCH net-next 2/3] net: add helper eth_addr_add() Michael Walle
2021-04-14 15:26 ` [PATCH net-next 3/3] net: implement nvmem-mac-address-offset DT property Michael Walle
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