From: Alexandru Tachici <alexandru.tachici@xxxxxxxxxx> The ADIN1110 is a low power single port 10BASE-T1L MAC-PHY designed for industrial Ethernet applications. It integrates an Ethernet PHY core with a MAC and all the associated analog circuitry, input and output clock buffering. ADIN1110 MAC-PHY encapsulates the ADIN1100 PHY. The PHY registers can be accessed through the MDIO MAC registers. We are registering an MDIO bus with custom read/write in order to let the PHY to be discovered by the PAL. This will let the ADIN1100 Linux driver to probe and take control of the PHY. The ADIN2111 is a low power, low complexity, two-Ethernet ports switch with integrated 10BASE-T1L PHYs and one serial peripheral interface (SPI) port. The device is designed for industrial Ethernet applications using low power constrained nodes and is compliant with the IEEE 802.3cg-2019 Ethernet standard for long reach 10 Mbps single pair Ethernet (SPE). The switch supports various routing configurations between the two Ethernet ports and the SPI host port providing a flexible solution for line, daisy-chain, or ring network topologies. The ADIN2111 supports cable reach of up to 1700 meters with ultra low power consumption of 77 mW. The two PHY cores support the 1.0 V p-p operating mode and the 2.4 V p-p operating mode defined in the IEEE 802.3cg standard. The device integrates the switch, two Ethernet physical layer (PHY) cores with a media access control (MAC) interface and all the associated analog circuitry, and input and output clock buffering. The device also includes internal buffer queues, the SPI and subsystem registers, as well as the control logic to manage the reset and clock control and hardware pin configuration. Access to the PHYs is exposed via an internal MDIO bus. Writes/reads can be performed by reading/writing to the ADIN2111 MDIO registers via SPI. On probe, for each port, a struct net_device is allocated and registered. When both ports are added to the same bridge, the driver will enable offloading of frame forwarding at the hardware level. Driver offers STP support. Normal operation on forwarding state. Allows only frames with the 802.1d DA to be passed to the host when in any of the other states. Supports both VEB and VEPA modes. In VEB mode multicast/broadcast and unknown frames are handled by the ADIN2111, sw bridge will not see them (this is to save SPI bandwidth). In VEPA mode, all forwarding will be handled by the sw bridge, ADIN2111 will not attempt to forward any frames in hardware to the other port. Alexandru Tachici (3): net: phy: adin1100: add PHY IDs of adin1110/adin2111 net: ethernet: adi: Add ADIN1110 support dt-bindings: net: adin1110: Add docs Changelog V2 -> V3: - removed used of cpu_to_le16() for reg address, it was generating sparse complaints and it was not needed as FIELD_GET works fine no matter if host CPU is LE/BE - moved variable definitions in reversed tree - changed probe_capabilities from MDIOBUS_C22_C45 to MDIOBUS_C22 - use phy_do_ioctl() instead of phy_mii_ioctl() - in adin1110_read_fifo(): receive frame from SPI directly in the skb, used skb_pull() to move data* past the custom protocol header - split MDIO read/write SPI bus locking to avoid holding the lock in readx_poll_timeout() - in adin1110_probe_netdevs(): moved devm_register_netdev at the end of function in order to have IRQs and notifiers setup before device going live - added possibility to set different Host MAC addresses per port - added spi-peripheral-props.yaml to allOf: .../devicetree/bindings/net/adi,adin1110.yaml | 82 + drivers/net/ethernet/Kconfig | 1 + drivers/net/ethernet/Makefile | 1 + drivers/net/ethernet/adi/Kconfig | 28 + drivers/net/ethernet/adi/Makefile | 6 + drivers/net/ethernet/adi/adin1110.c | 1445 +++++++++++++++++ drivers/net/phy/adin1100.c | 7 +- 7 files changed, 1569 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/net/adi,adin1110.yaml create mode 100644 drivers/net/ethernet/adi/Kconfig create mode 100644 drivers/net/ethernet/adi/Makefile create mode 100644 drivers/net/ethernet/adi/adin1110.c -- 2.25.1
