Ethernet on a Radxa ROCK Pi E v1.21 with a RTL8211F ethernet PHY currently fails with the following message:
Could not get PHY for ethernet@ff540000: addr -1
This happens because the ethernet PHY is never reset before a phy-id is read back from the MDIO bus.
This series fixes this issue by calling eth_phy_set_mdio_bus() from the designware ethernet driver to issue a PHY reset before the phy_connect() call.
With the driver change and DM_ETH_PHY and PHY_REALTEK enabled the PHY can be identified and etherent works:
=> mdio list ethernet@ff540000: 1 - RealTek RTL8211F <--> ethernet@ff540000
This was tested with and without the DM_MDIO option enabled. Decided to leave it disabled in this series.
Jonas Karlman (2): net: designware: Reset eth phy before phy connect rockchip: rk3328-rock-pi-e: Enable DM_ETH_PHY and PHY_REALTEK
configs/rock-pi-e-rk3328_defconfig | 2 ++ drivers/net/designware.c | 7 +++++++ 2 files changed, 9 insertions(+)