yt8821 2.5G phy supports the capability of configuring chip mode, also known as serdes mode. add a property "motorcomm,chip-mode" in Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml Frank.Sae (2): dt-bindings: net: motorcomm: Add chip mode cfg net: phy: Add driver for Motorcomm yt8821 2.5G ethernet phy .../bindings/net/motorcomm,yt8xxx.yaml | 17 + drivers/net/phy/motorcomm.c | 639 +++++++++++++++++- 2 files changed, 653 insertions(+), 3 deletions(-) -- 2.25.1