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Message-ID: <a6cd7fe461b011cec2b59dffaf34e9c8b0819059.1763818120.git.daniel@makrotopia.org>
Date: Sat, 22 Nov 2025 13:33:47 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: Xu Liang <lxu@...linear.com>, 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>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 2/2] net: phy: mxl-gpy: add support for MxL86252
and MxL86282
Add PHY driver support for Maxlinear MxL86252 and MxL86282 switches.
The PHYs built-into those switches are just like any other GPY 2.5G PHYs
with the exception of the temperature sensor data being encoded in a
different way.
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
v2:
* drop change in gpy_update_interface(), it has been merged as a
separate patch via net tree
* add dedicated PHY-ID for each product
drivers/net/phy/mxl-gpy.c | 91 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 89 insertions(+), 2 deletions(-)
diff --git a/drivers/net/phy/mxl-gpy.c b/drivers/net/phy/mxl-gpy.c
index bea9072ac4a8d..58d8dd718445c 100644
--- a/drivers/net/phy/mxl-gpy.c
+++ b/drivers/net/phy/mxl-gpy.c
@@ -31,6 +31,8 @@
#define PHY_ID_GPY241BM 0x67C9DE80
#define PHY_ID_GPY245B 0x67C9DEC0
#define PHY_ID_MXL86211C 0xC1335400
+#define PHY_ID_MXL86252 0xC1335520
+#define PHY_ID_MXL86282 0xC1335500
#define PHY_CTL1 0x13
#define PHY_CTL1_MDICD BIT(3)
@@ -200,6 +202,29 @@ static int gpy_hwmon_read(struct device *dev,
return 0;
}
+static int mxl862x2_hwmon_read(struct device *dev,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel, long *value)
+{
+ struct phy_device *phydev = dev_get_drvdata(dev);
+ long tmp;
+ int ret;
+
+ ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, VSPEC1_TEMP_STA);
+ if (ret < 0)
+ return ret;
+ if (!ret)
+ return -ENODATA;
+
+ tmp = (s16)ret;
+ tmp *= 78125;
+ tmp /= 10000;
+
+ *value = tmp;
+
+ return 0;
+}
+
static umode_t gpy_hwmon_is_visible(const void *data,
enum hwmon_sensor_types type,
u32 attr, int channel)
@@ -217,19 +242,35 @@ static const struct hwmon_ops gpy_hwmon_hwmon_ops = {
.read = gpy_hwmon_read,
};
+static const struct hwmon_ops mxl862x2_hwmon_hwmon_ops = {
+ .is_visible = gpy_hwmon_is_visible,
+ .read = mxl862x2_hwmon_read,
+};
+
static const struct hwmon_chip_info gpy_hwmon_chip_info = {
.ops = &gpy_hwmon_hwmon_ops,
.info = gpy_hwmon_info,
};
+static const struct hwmon_chip_info mxl862x2_hwmon_chip_info = {
+ .ops = &mxl862x2_hwmon_hwmon_ops,
+ .info = gpy_hwmon_info,
+};
+
static int gpy_hwmon_register(struct phy_device *phydev)
{
struct device *dev = &phydev->mdio.dev;
+ const struct hwmon_chip_info *info;
struct device *hwmon_dev;
+ if (phy_id_compare_model(phydev->phy_id, PHY_ID_MXL86252) ||
+ phy_id_compare_model(phydev->phy_id, PHY_ID_MXL86282))
+ info = &mxl862x2_hwmon_chip_info;
+ else
+ info = &gpy_hwmon_chip_info;
+
hwmon_dev = devm_hwmon_device_register_with_info(dev, NULL, phydev,
- &gpy_hwmon_chip_info,
- NULL);
+ info, NULL);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
@@ -1291,6 +1332,50 @@ static struct phy_driver gpy_drivers[] = {
.led_hw_control_set = gpy_led_hw_control_set,
.led_polarity_set = gpy_led_polarity_set,
},
+ {
+ PHY_ID_MATCH_MODEL(PHY_ID_MXL86252),
+ .name = "MaxLinear Ethernet MxL86252",
+ .get_features = genphy_c45_pma_read_abilities,
+ .config_init = gpy_config_init,
+ .probe = gpy_probe,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ .config_aneg = gpy_config_aneg,
+ .aneg_done = genphy_c45_aneg_done,
+ .read_status = gpy_read_status,
+ .config_intr = gpy_config_intr,
+ .handle_interrupt = gpy_handle_interrupt,
+ .set_wol = gpy_set_wol,
+ .get_wol = gpy_get_wol,
+ .set_loopback = gpy_loopback,
+ .led_brightness_set = gpy_led_brightness_set,
+ .led_hw_is_supported = gpy_led_hw_is_supported,
+ .led_hw_control_get = gpy_led_hw_control_get,
+ .led_hw_control_set = gpy_led_hw_control_set,
+ .led_polarity_set = gpy_led_polarity_set,
+ },
+ {
+ PHY_ID_MATCH_MODEL(PHY_ID_MXL86282),
+ .name = "MaxLinear Ethernet MxL86282",
+ .get_features = genphy_c45_pma_read_abilities,
+ .config_init = gpy_config_init,
+ .probe = gpy_probe,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ .config_aneg = gpy_config_aneg,
+ .aneg_done = genphy_c45_aneg_done,
+ .read_status = gpy_read_status,
+ .config_intr = gpy_config_intr,
+ .handle_interrupt = gpy_handle_interrupt,
+ .set_wol = gpy_set_wol,
+ .get_wol = gpy_get_wol,
+ .set_loopback = gpy_loopback,
+ .led_brightness_set = gpy_led_brightness_set,
+ .led_hw_is_supported = gpy_led_hw_is_supported,
+ .led_hw_control_get = gpy_led_hw_control_get,
+ .led_hw_control_set = gpy_led_hw_control_set,
+ .led_polarity_set = gpy_led_polarity_set,
+ },
};
module_phy_driver(gpy_drivers);
@@ -1308,6 +1393,8 @@ static const struct mdio_device_id __maybe_unused gpy_tbl[] = {
{PHY_ID_MATCH_MODEL(PHY_ID_GPY241BM)},
{PHY_ID_MATCH_MODEL(PHY_ID_GPY245B)},
{PHY_ID_MATCH_MODEL(PHY_ID_MXL86211C)},
+ {PHY_ID_MATCH_MODEL(PHY_ID_MXL86252)},
+ {PHY_ID_MATCH_MODEL(PHY_ID_MXL86282)},
{ }
};
MODULE_DEVICE_TABLE(mdio, gpy_tbl);
--
2.52.0
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