linux-kernel - [net-next PATCH v13 09/14] net: mdio: regmap: add OF support

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Message-ID: <20250315154407.26304-10-ansuelsmth@gmail.com>
Date: Sat, 15 Mar 2025 16:43:49 +0100
From: Christian Marangi <ansuelsmth@...il.com>
To: Christian Marangi <ansuelsmth@...il.com>,
	Lee Jones <lee@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	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>,
	Vladimir Oltean <olteanv@...il.com>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	upstream@...oha.com
Subject: [net-next PATCH v13 09/14] net: mdio: regmap: add OF support

Permit to pass a device tree node to mdio regmap config and use
the OF variant of mdiobus_register.

This is done to autoprobe PHY defined in device tree as the current
mdiobus_register only permits probing PHY using the MDIO mask value.

Previous implementation is not changed as of_mdiobus_register fallback
to mdiobus_register if the passed device tree pointer is NULL.

Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
 drivers/net/mdio/mdio-regmap.c   | 2 +-
 include/linux/mdio/mdio-regmap.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mdio/mdio-regmap.c b/drivers/net/mdio/mdio-regmap.c
index ed0443eb039f..8e89068c844d 100644
--- a/drivers/net/mdio/mdio-regmap.c
+++ b/drivers/net/mdio/mdio-regmap.c
@@ -143,7 +143,7 @@ struct mii_bus *devm_mdio_regmap_register(struct device *dev,
 	else
 		mii->phy_mask = ~0;
 
-	rc = devm_mdiobus_register(dev, mii);
+	rc = devm_of_mdiobus_register(dev, mii, config->np);
 	if (rc) {
 		dev_err(config->parent, "Cannot register MDIO bus![%s] (%d)\n", mii->id, rc);
 		return ERR_PTR(rc);
diff --git a/include/linux/mdio/mdio-regmap.h b/include/linux/mdio/mdio-regmap.h
index bb0e7dc9c0dc..228f12e90750 100644
--- a/include/linux/mdio/mdio-regmap.h
+++ b/include/linux/mdio/mdio-regmap.h
@@ -14,6 +14,7 @@ struct regmap;
 
 struct mdio_regmap_config {
 	struct device *parent;
+	struct device_node *np;
 	struct regmap *regmap;
 	char name[MII_BUS_ID_SIZE];
 	u8 valid_addr;
-- 
2.48.1