linux-kernel - Re: [PATCH v2 1/3] net: stmmac: allow drivers to explicitly select PHY device

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Message-ID: <CADvTj4rGdb_kHV_gjKTJNkzYEPMzqLcHY_1xw7wy5r-ryqDfNQ@mail.gmail.com>
Date: Tue, 27 May 2025 13:21:21 -0600
From: James Hilliard <james.hilliard1@...il.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: netdev@...r.kernel.org, linux-sunxi@...ts.linux.dev, 
	Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>, 
	Russell King <linux@...linux.org.uk>, 
	"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, Furong Xu <0x1207@...il.com>, 
	Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>, linux-stm32@...md-mailman.stormreply.com, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] net: stmmac: allow drivers to explicitly select
 PHY device

On Tue, May 27, 2025 at 1:14 PM Andrew Lunn <andrew@...n.ch> wrote:
>
> On Tue, May 27, 2025 at 11:55:54AM -0600, James Hilliard wrote:
> > Some devices like the Allwinner H616 need the ability to select a phy
> > in cases where multiple PHY's may be present in a device tree due to
> > needing the ability to support multiple SoC variants with runtime
> > PHY selection.
>
> I'm not convinced about this yet. As far as i see, it is different
> variants of the H616. They should have different compatibles, since
> they are not actually compatible, and you should have different DT
> descriptions. So you don't need runtime PHY selection.

Different compatibles for what specifically? I mean the PHY compatibles
are just the generic "ethernet-phy-ieee802.3-c22" compatibles.

>
>         Andrew