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Message-ID: <9235D6609DB808459E95D78E17F2E43D40A9DAF6@CHN-SV-EXMX02.mchp-main.com> Date: Sat, 27 May 2017 00:20:00 +0000 From: <Woojung.Huh@...rochip.com> To: <f.fainelli@...il.com>, <netdev@...r.kernel.org> CC: <davem@...emloft.net>, <andrew@...n.ch> Subject: RE: [PATCH net-next 1/3] net: phy: Create sysfs reciprocal links for attached_dev/phydev > OK, I am confused now. You are describing what is going on with your > platform right? Can you describe a bit further here what is happening > and with which type of interface? Is this with the CPU interface or > something? Yes. It's on our platform. Like your platform, fixed phy is used to connect switch CPU port/master netdev. GMAC of SoC is cadence/macb.c with fixed phy modification. static int macb_mii_probe(struct net_device *dev) { ... phydev = phy_find_first(bp->mii_bus); if (!phydev) { phydev = fixed_phy_register(PHY_POLL, &fphy_status, -1, NULL); if (IS_ERR(phydev)) { netdev_err(dev, "no PHY found\n"); return -ENXIO; } } ... When failed to find phydev from phy_find_first(), it forces to fixed phy. ... /* attach the mac to the phy */ ret = phy_connect_direct(dev, phydev, &macb_handle_link_change, bp->phy_interface); sysfs_create_lin() inside of phy_connect_direct() fails. What is driver you are testing? I can check the file. Thanks. - Woojung
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