linux-toradex.git/drivers/of/of_mdio.c, branch v3.10.14

net: of_mdio: fix behavior on missing phy device

2013-05-08T20:13:29+00:00

of_mdiobus_register creates a phy_device even if get_phy_device failed
to create it previously. This causes indefinite polling on non-existent
PHYs. This fix makes of_mdio_register rely on get_phy_device to
properly create the device or fail otherwise.

Signed-off-by: Sebastian Hesselbarth 
Signed-off-by: David S. Miller

net: of_mdio: scan mdiobus for PHYs without reg property

2013-04-08T20:55:26+00:00

Using DT for mdiobus and ethernet-phy requires to know the PHY address, which
is hard to guess if you don't know it. This patch extends of_mdiobus_register
to scan mdiobus for PHYs if reg property of the corresponding node is not set.
This also allows to have phy nodes in SoC DT files where the reg property can
be overwritten in the board file later. To encourage people to finally set the
actual phy address, the mdiobus scan is noisier than required.

Signed-off-by: Sebastian Hesselbarth 
Signed-off-by: David S. Miller

net: phy: remove flags argument from phy_{attach, connect, connect_direct}

2013-01-14T20:11:50+00:00

The flags argument of the phy_{attach,connect,connect_direct} functions
is then used to assign a struct phy_device dev_flags with its value.
All callers but the tg3 driver pass the flag 0, which results in the
underlying PHY drivers in drivers/net/phy/ not being able to actually
use any of the flags they would set in dev_flags. This patch gets rid of
the flags argument, and passes phydev->dev_flags to the internal PHY
library call phy_attach_direct() such that drivers which actually modify
a phy device dev_flags get the value preserved for use by the underlying
phy driver.

Acked-by: Kosta Zertsekel 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

of_mdio: Honour "status=disabled" property of device

2012-11-29T17:36:16+00:00

Currently of_mdiobus_register() function registers all PHY devices,
independetly from their status property in device tree. According to
"ePAPR 1.1" spec, device should only be registered if there is no
"status" property, or it has "ok" (or "okay") value (see
of_device_is_available()). In case of "platform devices",
of_platform_device_create_pdata() checks for "status" and ensures
that disabled devices are not pupulated. But such check for MDIO buses
was missing until now. Fix it.

Signed-off-by: Alexander Sverdlin 
Signed-off-by: Grant Likely

netdev/phy/of: Handle IEEE802.3 clause 45 Ethernet PHYs in of_mdiobus_register()

2012-06-28T04:23:24+00:00

Define two new "compatible" values for Ethernet
PHYs. "ethernet-phy-ieee802.3-c22" and "ethernet-phy-ieee802.3-c45"
are used to indicate a PHY uses the corresponding protocol.

If a PHY is "compatible" with "ethernet-phy-ieee802.3-c45", we
indicate this so that get_phy_device() can properly probe the device.

If get_phy_device() fails, it was probably due to failing the probe of
the PHY identifier registers.  Since we have the device tree telling
us the PHY exists, go ahead and add it anyhow with a phy_id of zero.
There may be a driver match based on the "compatible" property.

Signed-off-by: David Daney 
Signed-off-by: David S. Miller

netdev/phy: Handle IEEE802.3 clause 45 Ethernet PHYs

2012-06-28T04:23:24+00:00

The IEEE802.3 clause 45 MDIO bus protocol allows for directly
addressing PHY registers using a 21 bit address, and is used by many
10G Ethernet PHYS.  Already existing is the ability of MDIO bus
drivers to use clause 45, with the MII_ADDR_C45 flag.  Here we add
struct phy_c45_device_ids to hold the device identifier registers
present in clause 45. struct phy_device gets a couple of new fields:
c45_ids to hold the identifiers and is_c45 to signal that it is clause
45.

get_phy_device() gets a new parameter is_c45 to indicate that the PHY
device should use the clause 45 protocol, and its callers are adjusted
to pass false.  The follow-on patch to of_mdio.c will pass true where
appropriate.

EXPORT phy_device_create() so that the follow-on patch to of_mdio.c
can use it to create phy devices for PHYs, that have non-standard
device identifier registers, based on the device tree bindings.

Signed-off-by: David Daney 
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: fix fixed link bus name

2012-02-27T16:09:52+00:00

Since 9e6c643b (phy/fixed: use an unique MDIO bus name) the name of the fixed
PHY bus is "fixed-0". Teach of_phy_connect_fixed_link() the new name.

Tested on a P1020RDB PowerPC system.

Signed-off-by: Baruch Siach 
Acked-by: Florian Fainelli 
Signed-off-by: Rob Herring

of_mdio: Don't phy_scan_fixups() twice

2011-10-25T04:55:52+00:00

The "phy_device_register()" call 5 lines down already calls
phy_scan_fixups(), there's no need to do it a second time.

Signed-off-by: Kyle Moffett 
Signed-off-by: Grant Likely

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi