• Chen-Yu Tsai's avatar
    ARM: dts: sunxi: Add mdio bus sub-node to GMAC · 968f2c91
    Chen-Yu Tsai authored
    The DWMAC binding never supported having the Ethernet PHY node as a
    direct child to the controller, nor did it support the "phy" property
    as a way to specify which Ethernet PHY to use. What seemed to work
    was simply the implementation ignoring the "phy" property and instead
    probing all addresses on the MDIO bus and using the first available
    one.
    
    The recent switch from "phy" to "phy-handle" breaks the assumptions
    of the implementation, and does not match what the binding requires.
    The binding requires that if an MDIO bus is described, it shall be
    a sub-node with the "snps,dwmac-mdio" compatible string.
    
    Add a device node for the MDIO bus, and move the Ethernet PHY node
    under it. Also fix up the #address-cells and #size-cells properties
    where needed.
    
    Fixes: de332de2 ("ARM: dts: sunxi: Switch from phy to phy-handle")
    Signed-off-by: default avatarChen-Yu Tsai <wens@csie.org>
    Signed-off-by: default avatarMaxime Ripard <maxime.ripard@bootlin.com>
    968f2c91
sun7i-a20-pcduino3-nano.dts 4.75 KB