[PATCH net 0/6 RESEND] net: dsa: b53: PCS fixes

[Florian Fainelli <florian.fainelli@broadcom.com>]

This patch series fixes a number of issues found with a LLM and while
testing on a Broadcom Northstar Plus reference board (BCM958625HR) using
a SFP connected to a fiber converter:

- there was no serialization of the registers across multiple lanes
- the SerDes powering down was incorrectly managed and should have used
  .pcs_{enable,disable}
- the interfaces advertisement should have been confined to successfully
  initialized PCSes
- the negotation and forced link parameters were incorrectly supported
  and should have used pcs_link_up and pcs_inband_caps
- link state should have been reported through the PCS

With these patches disconnecting the fiber cables triggers a link down,
as does disconnecting the fiber converter from its cable or powering it
down, ip link up/down also work properly as a result as well.

Florian Fainelli (6):
  net: dsa: b53: serialize SerDes register transactions
  net: dsa: b53: manage SerDes power through the PCS callbacks
  net: dsa: b53: constrain SerDes interfaces to initialized PCSes
  net: dsa: b53: configure PCS negotiation and forced link parameters
  net: dsa: b53: report link state through the PCS
  net: dsa: b53: apply resolved link settings to serial port MACs

 drivers/net/dsa/b53/b53_common.c |  69 ++----
 drivers/net/dsa/b53/b53_priv.h   |   4 -
 drivers/net/dsa/b53/b53_serdes.c | 407 +++++++++++++++++++++++--------
 drivers/net/dsa/b53/b53_serdes.h |  13 +-
 drivers/net/dsa/b53/b53_srab.c   |  12 +-
 5 files changed, 345 insertions(+), 160 deletions(-)

-- 
2.53.0