linux-kernel - [PATCH 1/2] net: phy: marvell-88q2xxx: Enable temperature measurement in probe again

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Message-Id: <20250218-marvell-88q2xxx-hwmon-enable-at-probe-v1-1-999a304c8a11@gmail.com>
Date: Tue, 18 Feb 2025 19:33:09 +0100
From: Dimitri Fedrau <dima.fedrau@...il.com>
To: 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>, 
 Niklas Söderlund <niklas.soderlund+renesas@...natech.se>, 
 Gregor Herburger <gregor.herburger@...tq-group.com>, 
 Stefan Eichenberger <eichest@...il.com>, 
 Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Dimitri Fedrau <dima.fedrau@...il.com>
Subject: [PATCH 1/2] net: phy: marvell-88q2xxx: Enable temperature
 measurement in probe again

Enabling of the temperature sensor was moved from mv88q2xxx_hwmon_probe to
mv88q222x_config_init with the consequence that the sensor is only
usable when the PHY is configured. Enable the sensor in
mv88q2xxx_hwmon_probe as well to fix this.

Fixes: a197004cf3c2 ("net: phy: marvell-88q2xxx: Fix temperature measurement with reset-gpios")
Signed-off-by: Dimitri Fedrau <dima.fedrau@...il.com>
---
 drivers/net/phy/marvell-88q2xxx.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/phy/marvell-88q2xxx.c b/drivers/net/phy/marvell-88q2xxx.c
index a3996471a1c9a5d4060d5d19ce44aa70e902a83f..30d71bfc365597d77c34c48f05390db9d63c4af4 100644
--- a/drivers/net/phy/marvell-88q2xxx.c
+++ b/drivers/net/phy/marvell-88q2xxx.c
@@ -718,6 +718,13 @@ static int mv88q2xxx_hwmon_probe(struct phy_device *phydev)
 	struct device *dev = &phydev->mdio.dev;
 	struct device *hwmon;
 	char *hwmon_name;
+	int ret;
+
+	/* Enable temperature sense */
+	ret = phy_modify_mmd(phydev, MDIO_MMD_PCS, MDIO_MMD_PCS_MV_TEMP_SENSOR2,
+			     MDIO_MMD_PCS_MV_TEMP_SENSOR2_DIS_MASK, 0);
+	if (ret < 0)
+		return ret;

 	priv->enable_temp = true;
 	hwmon_name = devm_hwmon_sanitize_name(dev, dev_name(dev));

-- 
2.39.5