On Thu, Mar 26, 2020 at 03:51:15PM +0200, Florinel Iordache wrote: > Add ethernet backplane device tree bindings > + - | > + /* Backplane configurations for specific setup */ > + &mdio9 { > + bpphy6: ethernet-phy@0 { > + compatible = "ethernet-phy-ieee802.3-c45"; > + reg = <0x0>; > + lane-handle = <&lane_d>; /* use lane D */ > + eq-algorithm = "bee"; > + /* 10G Short cables setup: up to 30 cm cable */ > + eq-init = <0x2 0x5 0x29>; > + eq-params = <0>; > + }; > + }; So you are modelling this as just another PHY? Does the driver get loaded based on the PHY ID in registers 2 and 3? Does the standard define these IDs or are they vendor specific? Thanks Andrew