linux.git/drivers/net/mdio, branch master

net: phy: mdio-bcm-unimac: Add BCM6846 support

2024-10-16T01:23:53+00:00

Add Unimac mdio compatible string for the special BCM6846
variant.

This variant has a few extra registers compared to other
versions.

Suggested-by: Florian Fainelli 
Link: https://lore.kernel.org/linux-devicetree/b542b2e8-115c-4234-a464-e73aa6bece5c@broadcom.com/
Signed-off-by: Linus Walleij 
Link: https://patch.msgid.link/20241012-bcm6846-mdio-v1-2-c703ca83e962@linaro.org
Signed-off-by: Jakub Kicinski

net: mdiobus: Debug print fwnode handle instead of raw pointer

2024-09-10T10:24:17+00:00

Was slightly misleading before, because printed is pointer to fwnode,
not to phy device, as placement in message suggested.  Include header
for dev_dbg() declaration while at it.

Output before:

    [  +0.001247] mdio_bus f802c000.ethernet-ffffffff: registered phy 2612f00a fwnode at address 3

Output after:

    [  +0.001229] mdio_bus f802c000.ethernet-ffffffff: registered phy fwnode /ahb/apb/ethernet@f802c000/ethernet-phy@3 at address 3

Reviewed-by: Florian Fainelli 
Reviewed-by: Andrew Lunn 
Signed-off-by: Alexander Dahl 
Link: https://patch.msgid.link/20240906062256.11289-1-ada@thorsis.com
Signed-off-by: Paolo Abeni

net: mdio: mux-mmioreg: Simplified with dev_err_probe()

2024-09-03T10:54:43+00:00

Use the dev_err_probe() helper to simplify code.

Reviewed-by: Jonathan Cameron 
Signed-off-by: Jinjie Ruan 
Reviewed-by: Florian Fainelli 
Signed-off-by: Paolo Abeni

net: mdio: mux-mmioreg: Simplified with scoped function

2024-09-03T10:54:43+00:00

Avoids the need for manual cleanup of_node_put() in early exits
from the loop by using for_each_available_child_of_node_scoped().

Reviewed-by: Andrew Lunn 
Reviewed-by: Jonathan Cameron 
Signed-off-by: Jinjie Ruan 
Reviewed-by: Florian Fainelli 
Signed-off-by: Paolo Abeni

net: mdio: Use of_property_count_u32_elems() to get property length

2024-08-02T01:13:15+00:00

Replace of_get_property() with the type specific
of_property_count_u32_elems() to get the property length.

This is part of a larger effort to remove callers of of_get_property()
and similar functions. of_get_property() leaks the DT property data
pointer which is a problem for dynamically allocated nodes which may
be freed.

Signed-off-by: Rob Herring (Arm) 
Link: https://patch.msgid.link/20240731201514.1839974-2-robh@kernel.org
Signed-off-by: Jakub Kicinski

net: mdio: mscc-miim: Handle the switch reset

2024-06-21T11:12:42+00:00

The mscc-miim device can be impacted by the switch reset, at least when
this device is part of the LAN966x PCI device.

Handle this newly added (optional) resets property.

Signed-off-by: Herve Codina 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: mdio-gpio: Use device_is_compatible()

2024-04-08T10:05:09+00:00

Replace open coded variant of device_is_compatible().

Signed-off-by: Andy Shevchenko 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: mdio-bcm-unimac: Add asp v2.2 support

2024-03-01T09:22:50+00:00

Add mdio compat string for ASP 2.0 ethernet driver.

Signed-off-by: Justin Chen 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: mdio: mdio-bcm-unimac: Manage clock around I/O accesses

2024-02-21T12:46:17+00:00

Up until now we have managed not to have the mdio-bcm-unimac manage its
clock except during probe and suspend/resume. This works most of the
time, except where it does not.

With a fully modular build, we can get into a situation whereby the
GENET driver is fully registered, and so is the mdio-bcm-unimac driver,
however the Ethernet PHY driver is not yet, because it depends on a
resource that is not yet available (e.g.: GPIO provider). In that state,
the network device is not usable yet, and so to conserve power, the
GENET driver will have turned off its "main" clock which feeds its MDIO
controller.

When the PHY driver finally probes however, we make an access to the PHY
registers to e.g.: disable interrupts, and this causes a bus error
within the MDIO controller space because the MDIO controller clock(s)
are turned off.

To remedy that, we manage the clock around all of the I/O accesses to
the hardware which are done exclusively during read, write and clock
divider configuration.

This ensures that the register space is accessible, and this also
ensures that there are not unnecessarily elevated reference counts
keeping the clocks active when the network device is administratively
turned off. It would be the case with the previous way of managing the
clock.

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

net: phy: add support for scanning PHY in PHY packages nodes

2024-02-10T15:36:19+00:00

Add support for scanning PHY in PHY package nodes. PHY packages nodes
are just container for actual PHY on the MDIO bus.

Their PHY address defined in the PHY package node are absolute and
reflect the address on the MDIO bus.

mdio_bus.c and of_mdio.c is updated to now support and parse also
PHY package subnode by checking if the node name match
"ethernet-phy-package".

As PHY package reg is mandatory and each PHY in the PHY package must
have a reg, every invalid PHY Package node is ignored and will be
skipped by the autoscan fallback.

Signed-off-by: Christian Marangi 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller