linux-stable.git/drivers/net/phy/Kconfig, branch linux-6.4.y

net: phy: hide the PHYLIB_LEDS knob

2023-04-26T09:54:50+00:00

commit 4bb7aac70b5d ("net: phy: fix circular LEDS_CLASS dependencies")
solved a build failure, but introduces a new config knob with a default
'y' value: PHYLIB_LEDS.

The latter is against the current new config policy. The exception
was raised to allow the user to catch bad configurations without led
support.

Anyway the current definition of PHYLIB_LEDS does not fit the above
goal: if LEDS_CLASS is disabled, the new config will be available
only with PHYLIB disabled, too.

Hide the mentioned config, to preserve the randconfig testing done so
far, while respecting the mentioned policy.

Suggested-by: Andrew Lunn 
Suggested-by: Arnd Bergmann 
Signed-off-by: Paolo Abeni 
Link: https://lore.kernel.org/r/d82489be8ed911c383c3447e9abf469995ccf39a.1682496488.git.pabeni@redhat.com
Signed-off-by: Paolo Abeni

drivers/net/phy: add driver for Microchip LAN867x 10BASE-T1S PHY

2023-04-23T12:40:59+00:00

This patch adds support for the Microchip LAN867x 10BASE-T1S family
(LAN8670/1/2). The driver supports P2MP with PLCA.

Reviewed-by: Andrew Lunn 
Signed-off-by: Ramón Nordin Rodriguez 
Signed-off-by: David S. Miller

net: phy: add basic driver for NXP CBTX PHY

2023-04-22T03:04:09+00:00

The CBTX PHY is a Fast Ethernet PHY integrated into the SJA1110 A/B/C
automotive Ethernet switches.

It was hoped it would work with the Generic PHY driver, but alas, it
doesn't. The most important reason why is that the PHY is powered down
by default, and it needs a vendor register to power it on.

It has a linear memory map that is accessed over SPI by the SJA1110
switch driver, which exposes a fake MDIO controller. It has the
following (and only the following) standard clause 22 registers:

0x0: MII_BMCR
0x1: MII_BMSR
0x2: MII_PHYSID1
0x3: MII_PHYSID2
0x4: MII_ADVERTISE
0x5: MII_LPA
0x6: MII_EXPANSION
0x7: the missing MII_NPAGE for Next Page Transmit Register

Every other register is vendor-defined.

The register map expands the standard clause 22 5-bit address space of
0x20 registers, however the driver does not need to access the extra
registers for now (and hopefully never). If it ever needs to do that, it
is possible to implement a fake (software) page switching mechanism
between the PHY driver and the SJA1110 MDIO controller driver.

Also, Auto-MDIX is turned off by default in hardware, the driver turns
it on by default and reports the current status. I've tested this with a
VSC8514 link partner and a crossover cable, by forcing the mode on the
link partner, and seeing that the CBTX PHY always sees the reverse of
the mode forced on the VSC8514 (and that traffic works). The link
doesn't come up (as expected) if MDI modes are forced on both ends in
the same way (with the cross-over cable, that is).

Signed-off-by: Vladimir Oltean 
Reviewed-by: Andrew Lunn 
Link: https://lore.kernel.org/r/20230418190141.1040562-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski

net: phy: fix circular LEDS_CLASS dependencies

2023-04-21T02:07:34+00:00

The CONFIG_PHYLIB symbol is selected by a number of device drivers that
need PHY support, but it now has a dependency on CONFIG_LEDS_CLASS,
which may not be enabled, causing build failures.

Avoid the risk of missing and circular dependencies by guarding the
phylib LED support itself in another Kconfig symbol that can only be
enabled if the dependency is met.

This could be made a hidden symbol and always enabled when both CONFIG_OF
and CONFIG_LEDS_CLASS are reachable from the phylib, but there may be an
advantage in having users see this option when they have a misconfigured
kernel without built-in LED support.

Fixes: 01e5b728e9e4 ("net: phy: Add a binding for PHY LEDs")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Andrew Lunn 
Link: https://lore.kernel.org/r/20230420084624.3005701-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski

net: phy: Add a binding for PHY LEDs

2023-04-19T11:59:16+00:00

Define common binding parsing for all PHY drivers with LEDs using
phylib. Parse the DT as part of the phy_probe and add LEDs to the
linux LED class infrastructure. For the moment, provide a dummy
brightness function, which will later be replaced with a call into the
PHY driver. This allows testing since the LED core might otherwise
reject an LED whose brightness cannot be set.

Add a dependency on LED_CLASS. It either needs to be built in, or not
enabled, since a modular build can result in linker errors.

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

net: phy: meson-gxl: reuse functionality of the SMSC PHY driver

2023-03-20T10:24:09+00:00

The Amlogic Meson internal PHY's have the same register layout as
certain SMSC PHY's (also for non-c22-standard registers). This seems
to be more than just coincidence. Apparently they also need the same
workaround for EDPD mode (energy detect power down). Therefore let's
reuse SMSC PHY driver functionality in the meson-gxl PHY driver.

Tested with a G12A internal PHY. I don't have GXL test hw,
therefore I replace only the callbacks that are identical in
the SMSC PHY driver.

Signed-off-by: Heiner Kallweit 
Signed-off-by: David S. Miller

net: phy: Add driver for Motorcomm yt8531 gigabit ethernet phy

2023-02-03T09:34:51+00:00

Add a driver for the motorcomm yt8531 gigabit ethernet phy. We have
 verified the driver on AM335x platform with yt8531 board. On the
 board, yt8531 gigabit ethernet phy works in utp mode, RGMII
 interface, supports 1000M/100M/10M speeds, and wol(magic package).

Signed-off-by: Frank Sae 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

drivers/net/phy: add driver for the onsemi NCN26000 10BASE-T1S PHY

2023-01-11T08:35:03+00:00

This patch adds support for the onsemi NCN26000 10BASE-T1S industrial
Ethernet PHY. The driver supports Point-to-Multipoint operation without
auto-negotiation and with link control handling. The PHY also features
PLCA for improving performance in P2MP mode.

Signed-off-by: Piergiorgio Beruto 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: remove redundant "depends on" lines

2022-12-09T04:01:21+00:00

Delete a few lines of "depends on PHYLIB" since they are inside
an "if PHYLIB / endif # PHYLIB" block, i.e., they are redundant
and the other 50+ drivers there don't use "depends on PHYLIB"
since it is not needed.

Signed-off-by: Randy Dunlap 
Cc: Andrew Lunn 
Cc: Heiner Kallweit 
Cc: Russell King 
Link: https://lore.kernel.org/r/20221207044257.30036-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski

net: phy: add Motorcomm YT8531S phy id.

2022-11-25T07:54:52+00:00

We added patch for motorcomm.c to support YT8531S. This patch has
been tested on AM335x platform which has one YT8531S interface
card and passed all test cases.
The tested cases indluding: YT8531S UTP function with support of
10M/100M/1000M; YT8531S Fiber function with support of 100M/1000M;
and YT8531S Combo function that supports auto detection of media type.

Since most functions of YT8531S are similar to YT8521 and we reuse some
codes for YT8521 in the patch file.

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