linux.git/include/linux/phy.h, branch v6.14-rc2

net: phy: remove leftovers from switch to linkmode bitmaps

2025-01-19T01:40:10+00:00

We have some leftovers from the switch to linkmode bitmaps which
- have never been used
- are not used any longer
- have no user outside phy_device.c
So remove them.

Signed-off-by: Heiner Kallweit 
Link: https://patch.msgid.link/5493b96e-88bb-4230-a911-322659ec5167@gmail.com
Signed-off-by: Jakub Kicinski

net: phy: add support for querying PHY clock stop capability

2025-01-17T01:22:59+00:00

Add support for querying whether the PHY allows the transmit xMII clock
to be stopped while in LPI mode. This will be used by phylink to pass
to the MAC driver so it can configure the generation of the xMII clock
appropriately.

Reviewed-by: Andrew Lunn 
Signed-off-by: Russell King (Oracle) 
Reviewed-by: Jacob Keller 
Link: https://patch.msgid.link/E1tYADg-0014Pb-AJ@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski

net: phy: introduce optional polling interface for PHY statistics

2025-01-14T10:44:19+00:00

Add an optional polling interface for PHY statistics to simplify driver
implementation.

Signed-off-by: Oleksij Rempel 
Signed-off-by: Paolo Abeni

net: ethtool: plumb PHY stats to PHY drivers

2025-01-14T10:44:19+00:00

Introduce support for standardized PHY statistics reporting in ethtool
by extending the PHYLIB framework. Add the functions
phy_ethtool_get_phy_stats() and phy_ethtool_get_link_ext_stats() to
provide a consistent interface for retrieving PHY-level and
link-specific statistics. These functions are used within the ethtool
implementation to avoid direct access to the phy_device structure
outside of the PHYLIB framework.

A new structure, ethtool_phy_stats, is introduced to standardize PHY
statistics such as packet counts, byte counts, and error counters.
Drivers are updated to include callbacks for retrieving PHY and
link-specific statistics, ensuring values are explicitly set only for
supported fields, initialized with ETHTOOL_STAT_NOT_SET to avoid
ambiguity.

Signed-off-by: Jakub Kicinski 
Signed-off-by: Oleksij Rempel 
Signed-off-by: Paolo Abeni

net: phy: add configuration of rx clock stop mode

2025-01-11T01:51:00+00:00

Add a function to allow configuration of the PCS's clock stop enable
bit, used to configure whether the xMII receive clock can be stopped
during LPI mode.

Reviewed-by: Andrew Lunn 
Tested-by: Choong Yong Liang 
Signed-off-by: Russell King (Oracle) 
Link: https://patch.msgid.link/E1tVZDR-0002Jl-Ry@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski

net: phy: add phy_disable_eee

2024-12-20T03:07:48+00:00

If a MAC driver doesn't support EEE, then the PHY shouldn't advertise it.
Add phy_disable_eee() for this purpose.

Signed-off-by: Heiner Kallweit 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/fd51738c-dcd6-4d61-b8c5-faa6ac0f1026@gmail.com
Signed-off-by: Jakub Kicinski

net: phy: Add helper for mapping RGMII link speed to clock rate

2024-12-10T02:36:02+00:00

The RGMII interface supports three data rates: 10/100 Mbps
and 1 Gbps. These speeds correspond to clock frequencies
of 2.5/25 MHz and 125 MHz, respectively.

Many Ethernet drivers, including glues in stmmac, follow
a similar pattern of converting RGMII speed to clock frequency.

To simplify code, define the helper rgmii_clock(speed)
to convert connection speed to clock frequency.

Suggested-by: Russell King (Oracle) 
Reviewed-by: Andrew Lunn 
Reviewed-by: Russell King (Oracle) 
Signed-off-by: Jan Petrous (OSS) 
Link: https://patch.msgid.link/20241205-upstream_s32cc_gmac-v8-4-ec1d180df815@oss.nxp.com
Signed-off-by: Jakub Kicinski

net: phy: remove genphy_c45_eee_is_active()'s is_enabled arg

2024-12-07T01:47:31+00:00

All callers to genphy_c45_eee_is_active() now pass NULL as the
is_enabled argument, which means we never use the value computed
in this function. Remove the argument and clean up this function.

Signed-off-by: Russell King (Oracle) 
Reviewed-by: Heiner Kallweit 
Link: https://patch.msgid.link/E1tJ9JC-006LIt-Ne@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski

net: phy: add phy_config_inband()

2024-12-05T03:19:07+00:00

Add a method to configure the PHY's in-band mode.

Reviewed-by: Andrew Lunn 
Signed-off-by: Russell King (Oracle) 
Link: https://patch.msgid.link/E1tIUru-006IUI-08@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski

net: phy: add phy_inband_caps()

2024-12-05T03:19:06+00:00

Add a method to query the PHY's in-band capabilities for a PHY
interface mode.

Where the interface mode does not have in-band capability, or the PHY
driver has not been updated to return this information, then
phy_inband_caps() should return zero. Otherwise, PHY drivers will
return a value consisting of the following flags:

LINK_INBAND_DISABLE indicates that the hardware does not support
in-band signalling, or can have in-band signalling configured via
software to be disabled.

LINK_INBAND_ENABLE indicates that the hardware will use in-band
signalling, or can have in-band signalling configured via software
to be enabled.

LINK_INBAND_BYPASS indicates that the hardware has the ability to
bypass in-band signalling when enabled after a timeout if the link
partner does not respond to its in-band signalling.

This reports the PHY capabilities for the particular interface mode,
not the current configuration.

Reviewed-by: Andrew Lunn 
Signed-off-by: Russell King (Oracle) 
Link: https://patch.msgid.link/E1tIUre-006ITz-KF@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski