linux-toradex.git/include/linux/of_mdio.h, branch v4.0-rc1

net: fix circular dependency in of_mdio code

2014-07-02T07:24:14+00:00

Commit 86f6cf4127 (net: of_mdio: add of_mdiobus_link_phydev()) introduced a
circular dependency between libphy and of_mdio.

depmod: ERROR: /kernel/drivers/net/phy/libphy.ko in
dependency cycle!
depmod: ERROR: /kernel/drivers/of/of_mdio.ko in dependency cycle!

The problem is that of_mdio.c references &mdio_bus_type and libphy now
references of_mdiobus_link_phydev.

Fix this by not exporting of_mdiobus_link_phydev() from of_mdio.ko.
Make it a static function in mdio_bus.c instead.

Signed-off-by: Daniel Mack 
Reported-by: Jeff Mahoney 
Fixes: 86f6cf4127 (net: of_mdio: add of_mdiobus_link_phydev())
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: of_mdio: add of_mdiobus_link_phydev()

2014-05-29T22:23:29+00:00

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 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

of: mdio: remove of_phy_connect_fixed_link

2014-05-22T19:16:44+00:00

All in-tree drivers have been converted to use the new pair of
functions: of_is_fixed_phy_link() plus of_phy_register_fixed_link(), we
can now safely remove of_phy_connect_fixed_link.

Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

of: provide a binding for fixed link PHYs

2014-05-16T21:19:22+00:00

Some Ethernet MACs have a "fixed link", and are not connected to a
normal MDIO-managed PHY device. For those situations, a Device Tree
binding allows to describe a "fixed link" using a special PHY node.

This patch adds:

 * A documentation for the fixed PHY Device Tree binding.

 * An of_phy_is_fixed_link() function that an Ethernet driver can call
   on its PHY phandle to find out whether it's a fixed link PHY or
   not. It should typically be used to know if
   of_phy_register_fixed_link() should be called.

 * An of_phy_register_fixed_link() function that instantiates the
   fixed PHY into the PHY subsystem, so that when the driver calls
   of_phy_connect(), the PHY device associated to the OF node will be
   found.

These two additional functions also support the old fixed-link Device
Tree binding used on PowerPC platforms, so that ultimately, the
network device drivers for those platforms could be converted to use
of_phy_is_fixed_link() and of_phy_register_fixed_link() instead of
of_phy_connect_fixed_link(), while keeping compatibility with their
respective Device Tree bindings.

Signed-off-by: Thomas Petazzoni 
Reviewed-by: Florian Fainelli 
Tested-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: mdio: of_mdiobus_register(): fall back to mdiobus_register() for !CONFIG_OF

2014-05-07T21:16:35+00:00

If CONFIG_OF is not set, make of_mdiobus_register() call
mdiobus_register() instead of returning -ENOSYS.

This way, we can just call of_mdiobus_register() from all DT-enabled
drivers to handle the compat cases.

Signed-off-by: Daniel Mack 
Suggested-by: Florian Fainelli 
Acked-by: Florian Fainelli 
Acked-by: Mugunthan V N 
Signed-off-by: David S. Miller

phylib: Add of_phy_attach

2014-01-13T22:29:49+00:00

10G PHYs don't currently support running the state machine, which
is implicitly setup via of_phy_connect(). Therefore, it is necessary
to implement an OF version of phy_attach(), which does everything
except start the state machine.

Signed-off-by: Andy Fleming 
Signed-off-by: Shaohui Xie 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller

of/mdio: Staticise !CONFIG_OF stubs

2012-10-11T02:41:05+00:00

The !CONFIG_OF stubs aren't static so if multiple files include the
header with this configuration then the linker will see multiple
definitions of the stubs.

Reported-by: Fengguang Wu 
Signed-off-by: Mark Brown 
Acked-by: Thomas Petazzoni 
Acked-by: Srinivas Kandagatla 
Signed-off-by: David S. Miller

of/mdio: Add dummy functions in of_mdio.h.

2012-08-30T16:37:52+00:00

This patch adds dummy functions in of_mdio.h, so that driver need not
ifdef there code with CONFIG_OF.

Signed-off-by: Srinivas Kandagatla 
Signed-off-by: David S. Miller

netdev/of/phy: New function: of_mdio_find_bus().

2012-05-08T02:58:09+00:00

Add of_mdio_find_bus() which allows an mii_bus to be located given its
associated the device tree node.

This is needed by the follow-on patch to add a driver for MDIO bus
multiplexers.

The of_mdiobus_register() function is modified so that the device tree
node is recorded in the mii_bus.  Then we can find it again by
iterating over all mdio_bus_class devices.

Because the OF device tree has now become an integral part of the
kernel, this can live in mdio_bus.c (which contains the needed
mdio_bus_class structure) instead of of_mdio.c.

Signed-off-by: David Daney 
Cc: Grant Likely 
Cc: "David S. Miller" 
Signed-off-by: David S. Miller

of/mdio: Add support function for Ethernet fixed-link property

2009-07-22T16:27:18+00:00

Fixed-link support is broken for the ucc_eth, gianfar, and fs_enet
device drivers.  The "OF MDIO rework" patches removed most of the
support. Instead of re-adding fixed-link stuff to the drivers, this
patch adds a support function for parsing the fixed-link property
and obtaining a dummy phy to match.

Note: the dummy phy handling in arch/powerpc is a bit of a hack and
needs to be reworked.  This function is being added now to solve the
regression in the Ethernet drivers, but it should be considered a
temporary measure until the fixed link handling can be reworked.

Signed-off-by: Anton Vorontsov 
Signed-off-by: Grant Likely 
Signed-off-by: David S. Miller