> Sorry for the confusion, the pin nodes are for the MDIO and MDC, these > PINs are used by the dedicated hardware MDIO block in the SoC. I will update > the node name from mux_0 to MDC, mux_1 to MDIO, to make it clear. The driver > for this node is drivers/net/mdio/mdio-ipq4019.c, it is not related to the > mdio-mux-* code. So these is all about pinmux. When you say: > PINs are used by the dedicated hardware MDIO block in the SoC do you actually mean: PINs are used by the two dedicated hardware MDIO blocks in the SoC. You have two sets of mdio/mdc configurations here, so i assume there are two MDIO hardware blocks, each being an MDIO bus master. Andrew