diff options
| -rw-r--r-- | target/linux/generic/files/drivers/net/phy/ar8216.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index 45b2bd7a65..f356eafe5d 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -1956,6 +1956,44 @@ ar8216_config_aneg(struct phy_device *phydev) return genphy_config_aneg(phydev); } +static const u32 ar8xxx_phy_ids[] = { + 0x004dd033, + 0x004dd041, + 0x004dd042, +}; + +static bool +ar8xxx_phy_match(u32 phy_id) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ar8xxx_phy_ids); i++) + if (phy_id == ar8xxx_phy_ids[i]) + return true; + + return false; +} + +static bool +ar8xxx_is_possible(struct mii_bus *bus) +{ + unsigned i; + + for (i = 0; i < 4; i++) { + u32 phy_id; + + phy_id = mdiobus_read(bus, i, MII_PHYSID1) << 16; + phy_id |= mdiobus_read(bus, i, MII_PHYSID2); + if (!ar8xxx_phy_match(phy_id)) { + pr_debug("ar8xxx: unknown PHY at %s:%02x id:%08x\n", + dev_name(&bus->dev), i, phy_id); + return false; + } + } + + return true; +} + static int ar8216_probe(struct phy_device *pdev) { @@ -1966,6 +2004,9 @@ ar8216_probe(struct phy_device *pdev) if (pdev->addr != 0 && pdev->addr != 4) return -ENODEV; + if (!ar8xxx_is_possible(pdev->bus)) + return -ENODEV; + priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL); if (priv == NULL) return -ENOMEM; |