[RFC,net-next,00/16] Add support for Xilinx PCS

Message

Sean Anderson Oct. 4, 2021, 7:15 p.m. UTC

This series adds experimental support for Xilinx PCS devices. It is
experimental because while I believe I have the Linux side mostly
sorted, I have yet to achieve any data transfer. Adding support for this
device has required some plumbing work related to PCSs in general, and I
would appreciate feedback in that area. In general, I have not tested
these changes outside of my particular setup, though I do have the
ability to test the macb changes using the internal PCS in the future.


Sean Anderson (16):
  dt-bindings: net: Add pcs property
  dt-bindings: net: Add binding for Xilinx PCS
  net: sfp: Fix typo in state machine debug string
  net: phylink: Move phylink_set_pcs before phylink_create
  net: phylink: Automatically attach PCS devices
  net: phylink: Add function for optionally adding a PCS
  net: phylink: Add helpers for c22 registers without MDIO
  net: macb: Clean up macb_validate
  net: macb: Move most of mac_prepare to mac_config
  net: macb: Move PCS settings to PCS callbacks
  net: macb: Support restarting PCS autonegotiation
  net: macb: Support external PCSs
  net: phy: Export get_phy_c22_id
  net: mdio: Add helper functions for accessing MDIO devices
  net: pcs: Add Xilinx PCS driver
  net: sfp: Add quirk to ignore PHYs

 .../bindings/net/ethernet-controller.yaml     |   5 +
 .../devicetree/bindings/net/xilinx,pcs.yaml   |  83 ++++
 MAINTAINERS                                   |   6 +
 drivers/net/ethernet/cadence/macb_main.c      | 375 +++++++++++-------
 drivers/net/pcs/Kconfig                       |  19 +
 drivers/net/pcs/Makefile                      |   1 +
 drivers/net/pcs/pcs-xilinx.c                  | 326 +++++++++++++++
 drivers/net/phy/phy_device.c                  |   3 +-
 drivers/net/phy/phylink.c                     | 335 ++++++++++++----
 drivers/net/phy/sfp-bus.c                     |  12 +-
 drivers/net/phy/sfp.c                         |   5 +-
 include/linux/mdio.h                          |  17 +
 include/linux/phy.h                           |   1 +
 include/linux/phylink.h                       |  17 +-
 14 files changed, 963 insertions(+), 242 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/xilinx,pcs.yaml
 create mode 100644 drivers/net/pcs/pcs-xilinx.c