linux-kernel - Re: [PATCH net-next 1/3] dt-bindings: net: Add support for Spacemit K3 dwmac

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Message-ID: <aXABw0zVz8n3jLlm@inochi.infowork>
Date: Wed, 21 Jan 2026 06:31:22 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Andrew Lunn <andrew@...n.ch>, Inochi Amaoto <inochiama@...il.com>
Cc: Yao Zi <me@...ao.cc>, 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>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Yixun Lan <dlan@...too.org>, 
	Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>, 
	Richard Cochran <richardcochran@...il.com>, Paul Walmsley <pjw@...nel.org>, 
	Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
	Alexandre Ghiti <alex@...ti.fr>, "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, 
	Yanteng Si <siyanteng@...oftware.com.cn>, Yao Zi <ziyao@...root.org>, 
	Vladimir Oltean <vladimir.oltean@....com>, Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>, 
	Choong Yong Liang <yong.liang.choong@...ux.intel.com>, Maxime Chevallier <maxime.chevallier@...tlin.com>, 
	Chen-Yu Tsai <wens@...nel.org>, Shangjuan Wei <weishangjuan@...incomputing.com>, 
	Boon Khai Ng <boon.khai.ng@...era.com>, Quentin Schulz <quentin.schulz@...rry.de>, 
	Giuseppe Cavallaro <peppe.cavallaro@...com>, Jose Abreu <joabreu@...opsys.com>, netdev@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	spacemit@...ts.linux.dev, linux-stm32@...md-mailman.stormreply.com, 
	linux-arm-kernel@...ts.infradead.org, Longbin Li <looong.bin@...il.com>
Subject: Re: [PATCH net-next 1/3] dt-bindings: net: Add support for Spacemit
 K3 dwmac

On Tue, Jan 20, 2026 at 02:48:12PM +0100, Andrew Lunn wrote:
> > IIRC, the "phy" clock is used to pass the phy from the mac core, I will
> > double check if it is possible to connect to the phy directly.
> 
> Are you saying this is the reference clock output from the MAC being
> fed to the PHY? That would be a clock provider, not a clock consumer.
> 
> Or is it the reference clock output from the PHY going to the MAC?
> Then the MAC would be a consumer.
> 
> And there are some designs which have a third party generate the
> clock, and both the MAC and the PHY consume it.
> 

I have confirmed the clock is directly from the the clock tree and
is consumed only by the PHY. It seems like I have got a wrong
information about this. So let's remove it and let the phy consume
the clock if it use this clock.

Regards,
Inochi