6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dimitri Fedrau <dima.fedrau@xxxxxxxxx>
[ Upstream commit a197004cf3c2e6c8cc0695c787a97e62e3229754 ]
When using temperature measurement on Marvell 88Q2XXX devices and the
reset-gpios property is set in DT, the device does a hardware reset when
interface is brought down and up again. That means that the content of
the register MDIO_MMD_PCS_MV_TEMP_SENSOR2 is reset to default and that
leads to permanent deactivation of the temperature measurement, because
activation is done in mv88q2xxx_probe. To fix this move activation of
temperature measurement to mv88q222x_config_init.
Fixes: a557a92e6881 ("net: phy: marvell-88q2xxx: add support for temperature sensor")
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Signed-off-by: Dimitri Fedrau <dima.fedrau@xxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Link: https://patch.msgid.link/20250118-marvell-88q2xxx-fix-hwmon-v2-1-402e62ba2dcb@xxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/phy/marvell-88q2xxx.c | 33 ++++++++++++++++++++++++-------
1 file changed, 26 insertions(+), 7 deletions(-)
diff --git a/drivers/net/phy/marvell-88q2xxx.c b/drivers/net/phy/marvell-88q2xxx.c
index c812f16eaa3a8..b3a5a0af19da6 100644
--- a/drivers/net/phy/marvell-88q2xxx.c
+++ b/drivers/net/phy/marvell-88q2xxx.c
@@ -95,6 +95,10 @@
#define MDIO_MMD_PCS_MV_TDR_OFF_CUTOFF 65246
+struct mv88q2xxx_priv {
+ bool enable_temp;
+};
+
struct mmd_val {
int devad;
u32 regnum;
@@ -669,17 +673,12 @@ static const struct hwmon_chip_info mv88q2xxx_hwmon_chip_info = {
static int mv88q2xxx_hwmon_probe(struct phy_device *phydev)
{
+ struct mv88q2xxx_priv *priv = phydev->priv;
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));
if (IS_ERR(hwmon_name))
return PTR_ERR(hwmon_name);
@@ -702,6 +701,14 @@ static int mv88q2xxx_hwmon_probe(struct phy_device *phydev)
static int mv88q2xxx_probe(struct phy_device *phydev)
{
+ struct mv88q2xxx_priv *priv;
+
+ priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ phydev->priv = priv;
+
return mv88q2xxx_hwmon_probe(phydev);
}
@@ -792,6 +799,18 @@ static int mv88q222x_revb1_revb2_config_init(struct phy_device *phydev)
static int mv88q222x_config_init(struct phy_device *phydev)
{
+ struct mv88q2xxx_priv *priv = phydev->priv;
+ int ret;
+
+ /* Enable temperature sense */
+ if (priv->enable_temp) {
+ 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;
+ }
+
if (phydev->c45_ids.device_ids[MDIO_MMD_PMAPMD] == PHY_ID_88Q2220_REVB0)
return mv88q222x_revb0_config_init(phydev);
else
--
2.39.5
