On Mon, Mar 12, 2018 at 04:11:57PM +0100, Geert Uytterhoeven wrote: > Hi Simon, Magnus, > > On Renesas R-Car Gen2 SoCs, the pin group for the MDIO bus is named > "mdio". > > When initial support was added for R-Car H3, the MDIO pin was forgotten, > and the MDC pin got its own group named "mdc". During the addition of > support for R-Car M3-W, this mistake was noticed. But as R-Car H3 and > M3-W are pin compatible, and can be mounted on the same boards, the > decision was made to just add the MDIO pin to the existing "mdc" group. > Later this was extended to R-Car H3 ES2.0, and M3-N, because of pin > compatibility, and to R-Car D3, in the name of consistency among R-Car > Gen3 SoCs. > > However, this decision keeps on being questioned when adding new SoC > support. Hence bite the bullet and admit our mistake, and rename the > pin group from "mdc" to "mdio", like on R-Car Gen2 SoCs. > > This series is the DTS part, and depends on the series '[PATCH 0/6] > pinctrl: sh-pfc: rcar-gen3: Rename EtherAVB "mdc" pin group to "mdio"'. Hi Geert, could you comment on the forwards/backwards compatibility considerations of this series?
