[RFC net-next PATCH 00/13] Add PCS core support

[Sean Anderson <sean.anderson@linux.dev>]

This series adds support for creating PCSs as devices on a bus with a
driver (patch 3). As initial users,

- The Lynx PCS (and all of its users) is converted to this system (patch 5)
- The Xilinx PCS is broken out from the AXI Ethernet driver (patches 6-8)
- The Cadence MACB driver is converted to support external PCSs (namely
  the Xilinx PCS) (patches 9-10).

The last few patches add device links for pcs-handle to improve boot times,
and add compatibles for all Lynx PCSs.

Care has been taken to ensure backwards-compatibility. The main source
of this is that many PCS devices lack compatibles and get detected as
PHYs. To address this, pcs_get_by_fwnode_compat allows drivers to edit
the devicetree to add appropriate compatibles.

This is technically a v3 (with [1,2] being v1 and v2, respectively), but
there have been so many architectural changes that I didn't bother
maintaining the series changelog. I think it is best to review this
series independently of its past iterations. I submitted this as an RFC
since net-next is closed, but I believe this series is fully tested and
ready to be applied.

[1] https://lore.kernel.org/netdev/20211004191527.1610759-1-sean.anderson@seco.com/
[2] https://lore.kernel.org/netdev/20221103210650.2325784-1-sean.anderson@seco.com/


Sean Anderson (12):
  dt-bindings: net: Add binding for Xilinx PCS
  net: phylink: Support setting PCS link change callbacks
  net: pcs: Add subsystem
  net: pcs: lynx: Convert to an MDIO driver
  net: phy: Export some functions
  net: pcs: Add Xilinx PCS driver
  net: axienet: Convert to use PCS subsystem
  net: macb: Move most of mac_config to mac_prepare
  net: macb: Support external PCSs
  of: property: Add device link support for PCS
  arm64: dts: Add compatible strings for Lynx PCSs
  powerpc: dts: Add compatible strings for Lynx PCSs

Vladimir Oltean (1):
  net: dsa: ocelot: suppress PHY device scanning on the internal MDIO
    bus

 .../devicetree/bindings/net/xilinx,pcs.yaml   | 129 ++++
 Documentation/networking/index.rst            |   1 +
 Documentation/networking/kapi.rst             |   4 +
 Documentation/networking/pcs.rst              |  99 +++
 MAINTAINERS                                   |   8 +
 .../arm64/boot/dts/freescale/fsl-ls208xa.dtsi |  48 +-
 .../arm64/boot/dts/freescale/fsl-lx2160a.dtsi |  54 +-
 .../dts/freescale/qoriq-fman3-0-10g-0.dtsi    |   3 +-
 .../dts/freescale/qoriq-fman3-0-10g-1.dtsi    |   3 +-
 .../dts/freescale/qoriq-fman3-0-1g-0.dtsi     |   3 +-
 .../dts/freescale/qoriq-fman3-0-1g-1.dtsi     |   3 +-
 .../dts/freescale/qoriq-fman3-0-1g-2.dtsi     |   3 +-
 .../dts/freescale/qoriq-fman3-0-1g-3.dtsi     |   3 +-
 .../dts/freescale/qoriq-fman3-0-1g-4.dtsi     |   3 +-
 .../dts/freescale/qoriq-fman3-0-1g-5.dtsi     |   3 +-
 .../fsl/qoriq-fman3-0-10g-0-best-effort.dtsi  |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-10g-0.dtsi     |   3 +-
 .../fsl/qoriq-fman3-0-10g-1-best-effort.dtsi  |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-10g-1.dtsi     |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-10g-2.dtsi     |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-10g-3.dtsi     |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-1g-0.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-1g-1.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-1g-2.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-1g-3.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-1g-4.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-0-1g-5.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-10g-0.dtsi     |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-10g-1.dtsi     |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-1g-0.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-1g-1.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-1g-2.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-1g-3.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-1g-4.dtsi      |   3 +-
 .../boot/dts/fsl/qoriq-fman3-1-1g-5.dtsi      |   3 +-
 drivers/net/dsa/ocelot/Kconfig                |   4 +
 drivers/net/dsa/ocelot/felix_vsc9959.c        |  15 +-
 drivers/net/dsa/ocelot/seville_vsc9953.c      |  16 +-
 drivers/net/ethernet/altera/Kconfig           |   2 +
 drivers/net/ethernet/altera/altera_tse_main.c |   7 +-
 drivers/net/ethernet/cadence/macb.h           |   1 +
 drivers/net/ethernet/cadence/macb_main.c      | 229 ++++--
 drivers/net/ethernet/freescale/dpaa/Kconfig   |   2 +-
 drivers/net/ethernet/freescale/dpaa2/Kconfig  |   3 +
 .../net/ethernet/freescale/dpaa2/dpaa2-mac.c  |  11 +-
 drivers/net/ethernet/freescale/enetc/Kconfig  |   2 +
 .../net/ethernet/freescale/enetc/enetc_pf.c   |   8 +-
 .../net/ethernet/freescale/enetc/enetc_pf.h   |   1 -
 .../freescale/enetc/enetc_pf_common.c         |   4 +-
 drivers/net/ethernet/freescale/fman/Kconfig   |   4 +-
 .../net/ethernet/freescale/fman/fman_memac.c  |  27 +-
 drivers/net/ethernet/stmicro/stmmac/Kconfig   |   3 +
 .../ethernet/stmicro/stmmac/dwmac-socfpga.c   |   6 +-
 drivers/net/ethernet/xilinx/Kconfig           |   1 +
 drivers/net/ethernet/xilinx/xilinx_axienet.h  |   4 +-
 .../net/ethernet/xilinx/xilinx_axienet_main.c | 104 +--
 drivers/net/pcs/Kconfig                       |  51 +-
 drivers/net/pcs/Makefile                      |   4 +
 drivers/net/pcs/core.c                        | 701 ++++++++++++++++++
 drivers/net/pcs/pcs-lynx.c                    | 115 +--
 drivers/net/pcs/pcs-xilinx.c                  | 481 ++++++++++++
 drivers/net/phy/mdio_device.c                 |   1 +
 drivers/net/phy/phy_device.c                  |   3 +-
 drivers/net/phy/phylink.c                     |  24 +-
 drivers/of/property.c                         |   2 +
 include/linux/pcs-lynx.h                      |  13 +-
 include/linux/pcs-xilinx.h                    |  36 +
 include/linux/pcs.h                           | 122 +++
 include/linux/phy.h                           |   1 +
 include/linux/phylink.h                       |  27 +-
 70 files changed, 2104 insertions(+), 358 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/xilinx,pcs.yaml
 create mode 100644 Documentation/networking/pcs.rst
 create mode 100644 drivers/net/pcs/core.c
 create mode 100644 drivers/net/pcs/pcs-xilinx.c
 create mode 100644 include/linux/pcs-xilinx.h
 create mode 100644 include/linux/pcs.h

-- 
2.35.1.1320.gc452695387.dirty