Realtek RTL8211F has a "PHY-mode" EEE support which interferes with an
IEEE 802.3 compliant implementation. This mode defaults to enabled, and
results in the MAC receive path not seeing the link transition to LPI
state.

Fix this by disabling PHY-mode EEE.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/E1ttnHW-00785s-Uq@rmk-PC.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Since c909e68f8127 ("hwmon: (core) Use device name as a fallback in
devm_hwmon_device_register_with_info") we can simply provide NULL
as name argument.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/6e8d26f4-8d0a-4c83-aec3-378847a377eb@gmail.com
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Realtek shadows standard c45 registers in VEND2 device register space.
Add defines for these VEND2 registers, based on the names of the
standard c45 registers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/c90bdf76-f8b8-4d06-9656-7a52d5658ee6@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

C22 register space is mapped to 0xa400 in MMD VEND2 register space.
Add a helper to access mapped C22 registers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/6344277b-c5c7-449b-ac89-d5425306ca76@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The MDIO bus provided by r8169 for the internal PHY's now supports
c45 ops for the MDIO_MMD_VEND2 device. So we can switch to standard
MMD ops here.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/81416f95-0fac-4225-87b4-828e3738b8ed@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

r8169 provides the MDIO bus for the internal PHY's. It has been extended
with c45 access functions for addressing MDIO_MMD_VEND2 registers.
So we can switch from paged access to directly addressing the
MDIO_MMD_VEND2 registers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/a5f2333c-dda9-48ad-9801-77049766e632@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Use string choices helpers to simplify the code.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202501190707.qQS8PGHW-lkp@intel.com/
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Make config symbol REALTEK_PHY_HWMON user-visible, so that users can
remove support if not needed.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/3466ee92-166a-4b0f-9ae7-42b9e046f333@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

No conflicts and no adjacent changes.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>

HWMON support has been added for the RTL8221/8251 PHYs integrated together
with the MAC inside the RTL8125/8126 chips. This patch extends temperature
reading support for standalone variants of the mentioned PHYs.

I don't know whether the earlier revisions of the RTL8226 also have a
built-in temperature sensor, so they have been skipped for now.

Tested on RTL8221B-VB-CG.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>