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| author | Florian Fainelli <f.fainelli@gmail.com> | 2013-12-05 14:52:14 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-06 14:57:21 -0500 |
| commit | 8fdade4be755af17a3d205d07f594f939f173504 (patch) | |
| tree | 84c4ae38f56f58c1c9dbc9af385845f9f1d6cc87 /drivers/of | |
| parent | e9fbdf176d2a7993b9d4c487b50c68d1c6019b2c (diff) | |
| download | lwn-8fdade4be755af17a3d205d07f594f939f173504.tar.gz lwn-8fdade4be755af17a3d205d07f594f939f173504.zip | |
net: of_mdio: parse "max-speed" property to set PHY supported features
The "max-speed" property is defined per the ePAPR specification to
express the maximum speed a PHY supports. Use that property, if present
to set the phydev->supported features which properly restricts the PHY
within the range of defined speeds.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/of_mdio.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 14feffc36964..a43b8523c61e 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -22,12 +22,30 @@ MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); MODULE_LICENSE("GPL"); +static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed) +{ + phydev->supported |= PHY_DEFAULT_FEATURES; + + switch (max_speed) { + default: + return; + + case SPEED_1000: + phydev->supported |= PHY_1000BT_FEATURES; + case SPEED_100: + phydev->supported |= PHY_100BT_FEATURES; + case SPEED_10: + phydev->supported |= PHY_10BT_FEATURES; + } +} + static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *child, u32 addr) { struct phy_device *phy; bool is_c45; int rc, prev_irq; + u32 max_speed = 0; is_c45 = of_device_is_compatible(child, "ethernet-phy-ieee802.3-c45"); @@ -58,8 +76,13 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi return 1; } + /* Set phydev->supported based on the "max-speed" property + * if present */ + if (!of_property_read_u32(child, "max-speed", &max_speed)) + of_set_phy_supported(phy, max_speed); + dev_dbg(&mdio->dev, "registered phy %s at address %i\n", - child->name, addr); + child->name, addr); return 0; } |