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net: mdio: Rework scanning of bus ready for quirks

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Some C22 PHYs do bad things when there are C45 transactions on the
bus. In order to handle this, the bus needs to be scanned first for
C22 at all addresses, and then C45 scanned for all addresses.

The Marvell pxa168 driver scans a specific address on the bus to find
its PHY. This is a C22 only device, so update it to use the c22
helper.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Andrew Lunn
2023-01-18 11:01:36 +01:00
committed by Paolo Abeni
parent 81d874e7c8
commit d41e127757
3 changed files with 88 additions and 41 deletions
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2
include/linux/phy.h
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@@ -464,7 +464,7 @@ static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev)
}
struct mii_bus *mdio_find_bus(const char *mdio_name);
struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
struct phy_device *mdiobus_scan_c22(struct mii_bus *bus, int addr);
#define PHY_INTERRUPT_DISABLED false
#define PHY_INTERRUPT_ENABLED true