On Wed, Jul 1, 2020 at 9:13 AM Calvin Johnson <calvin.johnson@xxxxxxxxxxx> wrote: > > The PHYs on a mdiobus are probed and registered using mdiobus_register(). > Later, for connecting these PHYs to MAC, the PHYs registered on the > mdiobus have to be referenced. > > For each MAC node, a property "mdio-handle" is used to reference the > MDIO bus on which the PHYs are registered. On getting hold of the MDIO > bus, use find_phy_device() to get the PHY connected to the MAC. ... > + struct platform_device *pdev; This... > + fwnode_mdio = fwnode_find_reference(fwnode, "mdio-handle", 0); > + dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode_mdio); > + if (IS_ERR_OR_NULL(dev)) IS_ERR()?! > + return NULL; > + pdev = to_platform_device(dev); > + mdio = platform_get_drvdata(pdev); ...and this can be simple: mdio = dev_get_drvdata(dev); > + err = fwnode_property_read_u32(fwnode, "phy-channel", &addr); > + if (err < 0 || addr < 0 || addr >= PHY_MAX_ADDR) > + return NULL; -- With Best Regards, Andy Shevchenko
