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net: of_mdio: add of_mdiobus_link_phydev()

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Add a function to walk the list of subnodes of a mdio bus and look for
a node that matches the phy's address with its 'reg' property. If found,
set the of_node pointer for the phy. This allows auto-probed pyh
devices to be augmented by information passed in via DT.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Mack 2014-05-24 09:34:26 +02:00 • committed by David S. Miller
parent 8f8382888c
commit 86f6cf4127
3 changed files with 47 additions and 0 deletions
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8
include/linux/of_mdio.h
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@ -25,6 +25,9 @@ struct phy_device *of_phy_attach(struct net_device *dev,
extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
extern void of_mdiobus_link_phydev(struct mii_bus *mdio,
struct phy_device *phydev);
#else /* CONFIG_OF */
static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
{
@ -60,6 +63,11 @@ static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
{
return NULL;
}
static inline void of_mdiobus_link_phydev(struct mii_bus *mdio,
struct phy_device *phydev)
{
}
#endif /* CONFIG_OF */
#if defined(CONFIG_OF) && defined(CONFIG_FIXED_PHY)