netdev - Re: [PATCH net-next RFC v4 3/5] dt-bindings: net: phy: add timestamp preferred choice property

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Message-ID: <20230511131008.so5vfvnc3mrbfeh6@skbuf>
Date: Thu, 11 May 2023 16:10:08 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: Köry Maincent <kory.maincent@...tlin.com>
Cc: netdev@...r.kernel.org, kuba@...nel.org, glipus@...il.com,
	maxime.chevallier@...tlin.com, vadim.fedorenko@...ux.dev,
	richardcochran@...il.com, gerhard@...leder-embedded.com,
	thomas.petazzoni@...tlin.com, krzysztof.kozlowski+dt@...aro.org,
	robh+dt@...nel.org, linux@...linux.org.uk
Subject: Re: [PATCH net-next RFC v4 3/5] dt-bindings: net: phy: add timestamp
 preferred choice property

On Tue, May 02, 2023 at 11:10:43AM +0200, Köry Maincent wrote:
> If a future PHY, featured like this TI PHYTER, is supported in the future the
> default timestamp will be the MAC and we won't be able to select the PHY by
> default.
> Another example is my case with the 88E151x PHY, on the Russell side with the
> Macchiatobin board, the MAC is more precise, and in my side with a custom board
> with macb MAC, the PHY is more precise. Be able to select the prefer one from
> devicetree is convenient.

If convenience is all that there is, I guess that's not a very strong
argument for putting something in the device tree which couldn't have
been handled by user space through an init script, and nothing would
have been broken as a result of that.