From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Date: Wed, 28 Nov 2018 09:02:41 +0000 > This patch set is for R-Car Gen3 Salvator-XS boards. If we do > the following method, the phy cannot link up correctly. > > 1) Kernel boots by using initramfs. > --> No open the nic, so phy_device_register() and phy_probe() > deasserts the reset. > 2) Kernel enters the suspend. > --> So, keep the reset signal as deassert. > --> On R-Car Salvator-XS board, unfortunately, the board power is > turned off. > 3) Kernel returns from suspend. > 4) ifconfig eth0 up > --> Then, since edge signal of the reset doesn't happen, > it cannot link up. > 5) ifconfig eth0 down > 6) ifconfig eth0 up > --> In this case, it can link up. > > When resolving this issue after I got feedback from Andrew and Heiner, > I found an issue that the phy_device.c didn't call phy_resume() > if the PHY was not attached. So, patch 1 fixes it and add toggling > the phy reset to the micrel phy driver. > > Changes from v1 (as RFC): > - No remove the current code of phy_device.c to avoid any side effects. > - Fix the mdio_bus_phy_resume() in phy_device.c. > - Add toggling the phy reset in micrel.c if the PHY is not attached. Series applied, thank you.
