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net: phy: mxl-gpy: add support for MxL86252 and MxL86282

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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@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/a6cd7fe461b011cec2b59dffaf34e9c8b0819059.1763818120.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Daniel Golle
2025-11-22 13:33:47 +00:00
committed by Jakub Kicinski
parent 9d844da693
commit de1e5c9333
1 changed files with 89 additions and 2 deletions
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91
drivers/net/phy/mxl-gpy.c
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@@ -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);