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

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Message-ID: <9334905d-d11b-49d4-92b1-61e8cf644f0f@lunn.ch>
Date: Tue, 20 Jan 2026 14:48:12 +0100
From: Andrew Lunn <andrew@...n.ch>
To: 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

> 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.

     Andrew