On Thu, Sep 14, 2017 at 09:19:49PM +0200, Andrew Lunn wrote: > > > Is the MDIO controller "allwinner,sun8i-h3-emac" or "snps,dwmac-mdio"? > > > If the latter, then I think the node is fine, but then the mux should be > > > a child node of it. IOW, the child of an MDIO controller should either > > > be a mux node or slave devices. > > Hi Rob > > Up until now, children of an MDIO bus have been MDIO devices. Those > MDIO devices are either Ethernet PHYs, Ethernet Switches, or the > oddball devices that Broadcom iProc has, like generic PHYs. > > We have never had MDIO-muxes as MDIO children. A Mux is not an MDIO > device, and does not have the properties of an MDIO device. It is not > addressable on the MDIO bus. The current MUXes are addressed via GPIOs > or MMIO. > > There other similar cases. i2c-mux-gpio is not a child of an i2c bus, > nor i2c-mux-reg or gpio-mux. nxp,pca9548 is however a child of the i2c > bus, because it is an i2c device itself... > > If the MDIO mux was an MDIO device, i would agree with you. Bit it is > not, so lets not make it a child. > > Andrew Hello Rob, could you anwser/confirm please. I wait on this for sending the next version. Thanks Regards Corentin Labbe -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
