This series adds a DSA driver for the MV88E6xxx based on drivers/net/phy/mv88e61xx and uses it in the gwventana_gw5904_defconfig.
The hope is that the other three boards that use the MV88E61xx driver can move to this as well eventually so that we can remove the non-dm driver and the 4 Kconfig options it requires.
The MV88E6xxx has an MDIO interface thus DM_MDIO must be used so support for a UCLASS_MDIO driver is added to the fec_mxc ethernet driver in a way that allows a fallback to the previous non DM_MDIO case as there are many boards out there using this driver that define DM_MDIO but do not have the required dt props for a DM_MDIO driver which would cause a regression.
Additionally some other patches are here suggested by Vladimir: - ensure MDIO children are scanned on post-bind is needed - sanity check DSA driver required ops are present - allow DSA drivers to not require xmit/recv functions - remove unecessary xmit/recv functions from ksz9477 driver
v4: - use standard Linux internal MDIO dt structure - use PHY_FIXED_ID define - rename to mv88e6xxx - sort includes alphabetically - remove dsa term from function names - reduce indentation level and remove unecessary code in of probe_mdio function - rename pdev to mdev to represent mdio device
v3: - fix mdios node in dt - add Vladimir's rb tag's
v2: - added Ramon's rb tag's to first two patches - add patches for dsa-uclass to sanity check ops and make xmit/recv optional - fec: fix fallback for non conforming DM_MDIO dts - mv88e61xx: - rebase on v2022.07-rc2 (use ofnode_get_phy_node) - remove unused commented out fields from struct - remove unused PORT_MASK macro - remove phy from priv struct name - refactor code from original drivers/net/phy/mv88e61xx with suggestions from review to consolidate some functions into mv88e61xx_dsa_port_enable - remove unecessary skiping of disabling of CPU port - remove unecessary dev_set_parent_priv - remove unnecessary static init flag - replace debug with a dev_warn if switch device-id unsupported - remove unnecessary xmit/recv functions as we rely on the fact that only a single port is active instead of mangling packets
Tested on a Gateworks GW5904 which has a Marvell 88E6176 switch hanging off the IMX6 FEC.
Best Regards,
Tim
Tim Harvey (8): net: mdio-uclass: scan for dm mdio children on post-bind net: dsa: move cpu port probe to dsa_post_probe net: dsa: ensure dsa driver has proper ops net: dsa: allow rcv() and xmit() to be optional net: ksz9477: remove unnecessary xmit and recv functions net: fec: add support for DM_MDIO net: add MV88E61xx DSA driver board: gw_ventana: enable MV88E61XX DSA support
arch/arm/dts/imx6qdl-gw5904.dtsi | 31 + board/gateworks/gw_ventana/gw_ventana.c | 50 +- configs/gwventana_gw5904_defconfig | 8 +- drivers/net/Kconfig | 7 + drivers/net/Makefile | 1 + drivers/net/fec_mxc.c | 90 ++- drivers/net/ksz9477.c | 23 - drivers/net/mv88e6xxx.c | 826 ++++++++++++++++++++++++ net/dsa-uclass.c | 57 +- net/mdio-uclass.c | 4 + 10 files changed, 1025 insertions(+), 72 deletions(-) create mode 100644 drivers/net/mv88e6xxx.c