linux.git/include/linux/brcmphy.h, branch v6.18.21

net: phy: bcm54811: Fix GMII/MII/MII-Lite selection

2025-10-14T00:36:20+00:00

The Broadcom bcm54811 is hardware-strapped to select among RGMII and
GMII/MII/MII-Lite modes. However, the corresponding bit, RGMII Enable
in Miscellaneous Control Register must be also set to select desired
RGMII or MII(-lite)/GMII mode.

Fixes: 3117a11fff5af9e7 ("net: phy: bcm54811: PHY initialization")
Signed-off-by: Kamil Horák - 2N 
Reviewed-by: Florian Fainelli 
Link: https://patch.msgid.link/20251009130656.1308237-2-kamilh@axis.com
Signed-off-by: Jakub Kicinski

net: phy: bcm5481x: MII-Lite activation

2025-07-10T02:32:31+00:00

Broadcom PHYs featuring the BroadR-Reach two-wire link mode are usually
capable to operate in simplified MII mode, without TXER, RXER, CRS and
COL signals as defined for the MII. The absence of COL signal makes
half-duplex link modes impossible, however, the BroadR-Reach modes are
all full-duplex only.
Depending on the IC encapsulation, there exist MII-Lite-only PHYs such
as bcm54811 in MLP. The PHY itself is hardware-strapped to select among
multiple RGMII and MII-Lite modes, but the MII-Lite mode must be also
activated by software.

Add MII-Lite activation for bcm5481x PHYs.

Signed-off-by: Kamil Horák - 2N 
Reviewed-by: Florian Fainelli 
Reviewed-by: Russell King (Oracle) 
Link: https://patch.msgid.link/20250708090140.61355-4-kamilh@axis.com
Signed-off-by: Jakub Kicinski

net: phy: bcm54811: Add LRE registers definitions

2024-07-15T03:38:34+00:00

Add the definitions of LRE registers for Broadcom BCM5481x PHY

Signed-off-by: Kamil Horák (2N) 
Reviewed-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Link: https://patch.msgid.link/20240712150709.3134474-3-kamilh@axis.com
Signed-off-by: Jakub Kicinski

net: phy: broadcom: add support for BCM5221 phy

2023-10-06T23:01:27+00:00

This patch adds the BCM5221 PHY support by reusing brcm_fet_*()
callbacks and adding quirks for BCM5221 when needed.

Cc: Jim Reinhart 
Cc: James Autry 
Cc: Matthew Maron 
Signed-off-by: Giulio Benetti 
Reviewed-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20231005182915.153815-1-giulio.benetti@benettiengineering.com
Signed-off-by: Jakub Kicinski

net: phy: bcm7xxx: Add EPHY entry for 74165

2023-07-17T06:39:04+00:00

74165 is a 16nm process SoC with a 10/100 integrated Ethernet PHY,
utilize the recently defined 16nm EPHY macro to configure that PHY.

Reviewed-by: Simon Horman 
Reviewed-by: Andrew Lunn 
Signed-off-by: Florian Fainelli 
Signed-off-by: Justin Chen 
Signed-off-by: David S. Miller

net: phy: broadcom: Add support for setting LED brightness

2023-06-09T09:38:43+00:00

Broadcom PHYs have two LEDs selector registers which allow us to control
the LED assignment, including how to turn them on/off.

Signed-off-by: Florian Fainelli 
Reviewed-by: Simon Horman 
Signed-off-by: David S. Miller

net: phy: broadcom: Rename LED registers

2023-06-09T09:38:43+00:00

These registers are common to most PHYs and are not specific to the
BCM5482, renamed the constants accordingly, no functional change.

Signed-off-by: Florian Fainelli 
Reviewed-by: Simon Horman 
Signed-off-by: David S. Miller

net: phy: broadcom: Add LPI counter

2023-06-02T04:40:10+00:00

Add the ability to read the PHY maintained LPI counter which is in the
Clause 45 vendor space, device address 7, offset 0x803F. The counter is
cleared on read.

Signed-off-by: Florian Fainelli 
Reviewed-by: Andrew Lunn 
Link: https://lore.kernel.org/r/20230531231729.1873932-1-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski

net: phy: broadcom: Add support for Wake-on-LAN

2023-05-13T15:56:29+00:00

Add support for WAKE_UCAST, WAKE_MCAST, WAKE_BCAST, WAKE_MAGIC and
WAKE_MAGICSECURE. This is only supported with the BCM54210E and
compatible Ethernet PHYs. Using the in-band interrupt or an out of band
GPIO interrupts are supported.

Broadcom PHYs will generate a Wake-on-LAN level low interrupt on LED4 as
soon as one of the supported patterns is being matched. That includes
generating such an interrupt even if the PHY is operated during normal
modes. If WAKE_UCAST is selected, this could lead to the LED4 interrupt
firing up for every packet being received which is absolutely
undesirable from a performance point of view.

Because the Wake-on-LAN configuration can be set long before the system
is actually put to sleep, we cannot have an interrupt service routine to
clear on read the interrupt status register and ensure that new packet
matches will be detected.

It is desirable to enable the Wake-on-LAN interrupt as late as possible
during the system suspend process such that we limit the number of
interrupts to be handled by the system, but also conversely feed into
the Linux's system suspend way of dealing with interrupts in and around
the points of no return.

Reviewed-by: Simon Horman 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: broadcom: Implement suspend/resume for AC131 and BCM5241

2022-08-17T10:49:23+00:00

Implement the suspend/resume procedure for the Broadcom AC131 and BCM5241 type
of PHYs (10/100 only) by entering the standard power down followed by the
proprietary standby mode in the auxiliary mode 4 shadow register. On resume,
the PHY software reset is enough to make it come out of standby mode so we can
utilize brcm_fet_config_init() as the resume hook.

Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller