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    Subject[PATCH v3 0/8] net: phy: adin1100: Add initial support for ADIN1100 industrial PHY
    Date
    From: Alexandru Tachici <alexandru.tachici@analog.com>

    The ADIN1100 is a low power single port 10BASE-T1L transceiver designed for
    industrial Ethernet applications and is compliant with the IEEE 802.3cg
    Ethernet standard for long reach 10 Mb/s Single Pair Ethernet.

    The ADIN1100 uses Auto-Negotiation capability in accordance
    with IEEE 802.3 Clause 98, providing a mechanism for
    exchanging information between PHYs to allow link partners to
    agree to a common mode of operation.

    The concluded operating mode is the transmit amplitude mode and
    master/slave preference common across the two devices.

    Both device and LP advertise their ability and request for
    increased transmit at:
    - BASE-T1 autonegotiation advertisement register [47:32]\
    Clause 45.2.7.21 of Standard 802.3
    - BIT(13) - 10BASE-T1L High Level Transmit Operating Mode Ability
    - BIT(12) - 10BASE-T1L High Level Transmit Operating Mode Request

    For 2.4 Vpp (high level transmit) operation, both devices need
    to have the High Level Transmit Operating Mode Ability bit set,
    and only one of them needs to have the High Level Transmit
    Operating Mode Request bit set. Otherwise 1.0 Vpp transmit level
    will be used.

    Ethtool output:
    Settings for eth1:
    Supported ports: [ TP MII ]
    Supported link modes: 10baseT1L/Full
    Supported pause frame use: Transmit-only
    Supports auto-negotiation: Yes
    Supported FEC modes: Not reported
    Advertised link modes: 10baseT1L/Full
    Advertised pause frame use: Transmit-only
    Advertised auto-negotiation: Yes
    Advertised FEC modes: Not reported
    Link partner advertised link modes: 10baseT1L/Full
    Link partner advertised pause frame use: No
    Link partner advertised auto-negotiation: Yes
    Link partner advertised FEC modes: Not reported
    Speed: 10Mb/s
    Duplex: Full
    Auto-negotiation: on
    master-slave cfg: preferred master
    master-slave status: master
    Port: MII
    PHYAD: 0
    Transceiver: external
    Link detected: yes
    SQI: 7/7

    1. Add basic support for ADIN1100.

    Alexandru Ardelean (1):
    net: phy: adin1100: Add initial support for ADIN1100 industrial PHY

    1. Added 10baset-T1L link modes.

    2. Added 10-BasetT1L registers that are used in ADIN1100 driver.

    3. Added BaseT1 auto-negotiation registers. For ADIN1100 these
    registers decide master/slave status and TX voltage of the
    device and link partner.

    4. Allow user to set the master-slave configuration of ADIN1100.

    5. Convert MSE to SQI using a predefined table and allow user access
    through ethtool.

    6. DT bindings for the 2.4 Vpp transmit mode.

    7. DT bindings for ADIN1100.

    Alexandru Tachici (7):
    ethtool: Add 10base-T1L link mode entry
    net: phy: Add 10-BaseT1L registers
    net: phy: Add BaseT1 auto-negotiation registers
    net: phy: adin1100: Add ethtool master-slave support
    net: phy: adin1100: Add SQI support
    dt-bindings: net: phy: Add 10-baseT1L 2.4 Vpp
    dt-bindings: adin1100: Add binding for ADIN1100 Ethernet PHY

    Changelog V2 -> V3:
    - removed unused defines
    - dropped 1 V 2.4 V voltage link entries (will add these features in a separate patch)
    - dropped extra PHY stats, will add them in a separate patch
    (adin1200/1300 will need rework too as it implements same stats)
    - added PMA status register and PCS control register in mdio.h (registers specified in 802.3gc)
    - added auto-negotiation advertisement and link partner registers in mdio.h
    (Registers specified in 802.3 2018)
    - added 10base-t1l-2.4vpp tristate property to ethernet-phy yaml
    - replaced standard registers defines in adin1100.c with the ones added to mdio.h

    .../devicetree/bindings/net/adi,adin1100.yaml | 30 ++
    .../devicetree/bindings/net/ethernet-phy.yaml | 9 +
    drivers/net/phy/Kconfig | 7 +
    drivers/net/phy/Makefile | 1 +
    drivers/net/phy/adin1100.c | 403 ++++++++++++++++++
    drivers/net/phy/phy-core.c | 3 +-
    include/uapi/linux/ethtool.h | 1 +
    include/uapi/linux/mdio.h | 56 +++
    net/ethtool/common.c | 3 +
    9 files changed, 512 insertions(+), 1 deletion(-)
    create mode 100644 Documentation/devicetree/bindings/net/adi,adin1100.yaml
    create mode 100644 drivers/net/phy/adin1100.c

    --
    2.25.1

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