linux-stable.git/drivers/net/phy/broadcom.c, branch v5.16.2

net: phy: broadcom: Utilize appropriate suspend for BCM54810/11

2021-09-21T09:58:35+00:00

Since we enable APD and DLL/RXC/TXC disable we need to use
bcm54xx_suspend() in order not to do a read/modify/write of the BMCR
register which is incompatible with the desired settings.

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

net: phy: broadcom: Wire suspend/resume for BCM50610 and BCM50610M

2021-09-21T09:58:35+00:00

These two Ethernet PHYs support IDDQ-SR therefore wire-up the suspend
and resume callbacks to point to bcm54xx_suspend() and bcm54xx_resume().

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

net: phy: broadcom: Add IDDQ-SR mode

2021-09-21T09:58:35+00:00

Add support for putting the PHY into IDDQ Soft Recovery mode by setting
the TOP_MISC register bits accordingly. This requires us to implement a
custom bcm54xx_suspend() routine which diverges from genphy_suspend() in
order to configure the PHY to enter IDDQ with software recovery as well
as avoid doing a read/modify/write on the BMCR register.

Doing a read/modify/write on the BMCR register means that the
auto-negotation bit may remain which interferes with the ability to put
the PHY into IDDQ-SR mode. We do software reset upon suspend in order to
put the PHY back into its state prior to suspend as recommended by the
datasheet.

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

net: phy: broadcom: Enable 10BaseT DAC early wake

2021-09-17T02:11:17+00:00

Enable the DAC early wake when then link operates at 10BaseT allows
power savings in the hundreds of milli Watts by shutting down the
transmitter. A number of errata have been issued for various Gigabit
PHYs and the recommendation is to enable both the early and forced DAC
wake to be on the safe side. This needs to be done dynamically based
upon the link state, which is why a link_change_notify callback is
utilized.

Signed-off-by: Florian Fainelli 
Link: https://lore.kernel.org/r/20210916212742.1653088-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski

net: phy: broadcom: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811 PHY

2021-07-25T09:45:49+00:00

Restore PHY_ID_BCM54811 accidently removed by commit 5d4358ede8eb.

Fixes: 5d4358ede8eb ("net: phy: broadcom: Allow BCM54210E to configure APD")
Signed-off-by: Kevin Lo 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: broadcom: Add statistics for all Gigabit PHYs

2021-04-01T22:59:26+00:00

All Gigabit PHYs use the same register layout as far as fetching
statistics goes. Fast Ethernet PHYs do not all support statistics, and
the BCM54616S would require some switching between the coper and fiber
modes to fetch the appropriate statistics which is not supported yet.

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

net: phy: broadcom: Fix RGMII delays for BCM50160 and BCM50610M

2021-03-13T00:54:57+00:00

The PHY driver entry for BCM50160 and BCM50610M calls
bcm54xx_config_init() but does not call bcm54xx_config_clock_delay() in
order to configuration appropriate clock delays on the PHY, fix that.

Fixes: 733336262b28 ("net: phy: Allow BCM5481x PHYs to setup internal TX/RX clock delay")
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: broadcom: Add power down exit reset state delay

2021-03-12T02:25:19+00:00

Per the datasheet, when we clear the power down bit, the PHY remains in
an internal reset state for 40us and then resume normal operation.
Account for that delay to avoid any issues in the future if
genphy_resume() changes.

Fixes: fe26821fa614 ("net: phy: broadcom: Wire suspend/resume for BCM54810")
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: broadcom: Do not modify LED configuration for SFP module PHYs

2021-02-16T23:23:23+00:00

bcm54xx_config_init was modifying the PHY LED configuration to enable link
and activity indications. However, some SFP modules (such as Bel-Fuse
SFP-1GBT-06) have no LEDs but use the LED outputs to control the SFP LOS
signal, and modifying the LED settings will cause the LOS output to
malfunction. Skip this configuration for PHYs which are bound to an SFP
bus.

Signed-off-by: Robert Hancock 
Signed-off-by: David S. Miller

net: phy: broadcom: Set proper 1000BaseX/SGMII interface mode for BCM54616S

2021-02-16T23:23:23+00:00

The default configuration for the BCM54616S PHY may not match the desired
mode when using 1000BaseX or SGMII interface modes, such as when it is on
an SFP module. Add code to explicitly set the correct mode using
programming sequences provided by Bel-Fuse:

https://www.belfuse.com/resources/datasheets/powersolutions/ds-bps-sfp-1gbt-05-series.pdf
https://www.belfuse.com/resources/datasheets/powersolutions/ds-bps-sfp-1gbt-06-series.pdf

Signed-off-by: Robert Hancock 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller