• Ioana Ciornei's avatar
    dpaa2-eth: add MAC/PHY support through phylink · 71947923
    Ioana Ciornei authored
    The dpaa2-eth driver now has support for connecting to its associated
    PHY device found through standard OF bindings.
    
    This happens when the DPNI object (that the driver probes on) gets
    connected to a DPMAC. When that happens, the device tree is looked up by
    the DPMAC ID, and the associated PHY bindings are found.
    
    The old logic of handling the net device's link state by hand still
    needs to be kept, as the DPNI can be connected to other devices on the
    bus than a DPMAC: other DPNI, DPSW ports, etc. This logic is only
    engaged when there is no DPMAC (and therefore no phylink instance)
    attached.
    
    The MC firmware support multiple type of DPMAC links: TYPE_FIXED,
    TYPE_PHY. The TYPE_FIXED mode does not require any DPMAC management from
    Linux side, and as such, the driver will not handle such a DPMAC.
    
    Although PHYLINK typically handles SFP cages and in-band AN modes, for
    the moment the driver only supports the RGMII interfaces found on the
    LX2160A. Support for other modes will come later.
    Signed-off-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
    Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    71947923
dpaa2-eth.c 93.2 KB