netdev - [PATCH net-next 0/3] Disable CLKOUT on RTL8211F(D)(I)-VD-CG

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Message-Id: <20251106111003.37023-1-vladimir.oltean@nxp.com>
Date: Thu,  6 Nov 2025 13:10:00 +0200
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Marek Vasut <marex@...x.de>,
	Wei Fang <wei.fang@....com>,
	Clark Wang <xiaoning.wang@....com>
Subject: [PATCH net-next 0/3] Disable CLKOUT on RTL8211F(D)(I)-VD-CG

The Realtek RTL8211F(D)(I)-VD-CG is similar to other RTL8211F models in
that the CLKOUT signal can be turned off - a feature requested to reduce
EMI, and implemented via "realtek,clkout-disable" as documented in
Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml.

It is also dissimilar to said PHY models because it has no PHYCR2
register, and disabling CLKOUT is done through some other register.

The strategy adopted in this 3-patch series is to make the PHY driver
not think in terms of "priv->has_phycr2" and "priv->phycr2", but of more
high-level features ("priv->disable_clk_out") while maintaining behaviour.
Then, the logic is extended for the new PHY.

Very loosely based on previous work from Clark Wang, who took a
different approach, to pretend that the RTL8211FVD_CLKOUT_REG is
actually this PHY's PHYCR2.

Vladimir Oltean (3):
  net: phy: realtek: eliminate priv->phycr2 variable
  net: phy: realtek: eliminate has_phycr2 variable
  net: phy: realtek: allow CLKOUT to be disabled on RTL8211F(D)(I)-VD-CG

 drivers/net/phy/realtek/realtek_main.c | 60 ++++++++++++++++----------
 1 file changed, 37 insertions(+), 23 deletions(-)

-- 
2.34.1