[RFC net-next 0/8] net: Add support for Synopsys DesignWare XPCS

[Jose Abreu]

This adds support for Synopsys DesignWare XPCS in net subsystem and
integrates it into stmmac.

At 1/8, we start by removing the limitation of stmmac selftests that needed
a PHY to pass all the tests.

Then at 2/8 and 3/8 we add and use some new helpers in PHYLINK so that we
can simplify some code in stmmac and possible other drivers.

At 4/8, we fallback to dev_fwnode() so that PCI based setups wich may
not have CONFIG_OF can still use FW node.

We proceed by doing changes in PHYLINK in order to support XPCS: At 5/8 we
add some missing speeds that USXGMII supports and at 6/8 we do the most
important change to support XPCS that allows to configure MAC and PCS
withouht having any PHY neither SFP attached.

Support for XPCS is finally introduced at 7/8, along with the usage of it
in stmmac driver at 8/8.

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@xxxxxx>
Cc: Alexandre Torgue <alexandre.torgue@xxxxxx>
Cc: Jose Abreu <joabreu@xxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Andrew Lunn <andrew@xxxxxxx>
Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---

Jose Abreu (8):
  net: stmmac: selftests: Do not fail if PHY is not attached
  net: phylink: Add phylink_and and phylink_andnot Helpers
  net: stmmac: Switch to phylink_and()/phylink_andnot()
  net: stmmac: Fallback to dev_fwnode() if needed
  net: phylink: Add missing Backplane speeds
  net: phylink: Configure MAC/PCS when link is up without PHY
  net: phy: Add Synopsys DesignWare XPCS MDIO module
  net: stmmac: Integrate it with DesignWare XPCS

 MAINTAINERS                                        |   7 +
 drivers/net/ethernet/stmicro/stmmac/Kconfig        |   1 +
 drivers/net/ethernet/stmicro/stmmac/common.h       |   3 +
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |  12 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |  32 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c  |  27 +
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c |   2 +-
 drivers/net/phy/Kconfig                            |   6 +
 drivers/net/phy/Makefile                           |   1 +
 drivers/net/phy/mdio-xpcs.c                        | 567 +++++++++++++++++++++
 drivers/net/phy/phylink.c                          |  16 +-
 include/linux/mdio-xpcs.h                          |  41 ++
 include/linux/phylink.h                            |   4 +
 include/linux/stmmac.h                             |   1 +
 14 files changed, 708 insertions(+), 12 deletions(-)
 create mode 100644 drivers/net/phy/mdio-xpcs.c
 create mode 100644 include/linux/mdio-xpcs.h

-- 
2.7.4