#define MDIO_PMA_EXTABLE_10GBT 0x0004 /* 10GBASE-T ability */ #define MDIO_PMA_EXTABLE_10GBKX4 0x0008 /* 10GBASE-KX4 ability */ #define MDIO_PMA_EXTABLE_10GBKR 0x0010 /* 10GBASE-KR ability */ #define MDIO_PMA_EXTABLE_1000BT 0x0020 /* 1000BASE-T ability */ #define MDIO_PMA_EXTABLE_1000BKX 0x0040 /* 1000BASE-KX ability */ #define MDIO_PMA_EXTABLE_100BTX 0x0080 /* 100BASE-TX ability */ #define MDIO_PMA_EXTABLE_NBT 0x4000 /* 2.5/5GBASE-T ability */ [ 12.060265] MDIO_PMA_NG_EXTABLE: 0x3 /* 2.5G/5G Extended abilities register. */ #define MDIO_PMA_NG_EXTABLE_2_5GBT 0x0001 /* 2.5GBASET ability */ #define MDIO_PMA_NG_EXTABLE_5GBT 0x0002 /* 5GBASET ability */ I feel that the phy here is incorrectly reporting all these abilities as AQR115c supports speeds only upto 2.5Gbps https://www.marvell.com/content/dam/marvell/en/public-collateral/transceivers/marvell-phys-transceivers-aqrate-gen4-product-brief.pdf AQR115C / AQR115 Single port, 2.5Gbps / 1Gbps / 100Mbps / 10Mbps 7 x 7 mm / 7 x 11 mm I feel like get_features for AQR115c is reporting wrong modes and hence the link is coming up and is negotiated at 100Mbps. (Misbehavior from AQR115c)
