Hello As per patch https://lore.kernel.org/patchwork/patch/1300241/ the link modes for 100base FX full and half duplex modes did not exist. Adding these link modes to the core and ethtool allow devices like the DP83822, DP83869 and Broadcomm PHYs to properly advertise the correct mode for Fiber 100Mbps.
Corresponding user land ethtool patches are available but rely on these patches to be applied first. Dan Dan Murphy (3): ethtool: Add 100base-FX link mode entries net: dp83869: Add ability to advertise Fiber connection net: phy: dp83822: Update the fiber advertisement for speed drivers/net/phy/dp83822.c | 13 +++++-- drivers/net/phy/dp83869.c | 73 ++++++++++++++++++++++++++++++++++++ drivers/net/phy/phy-core.c | 4 +- include/uapi/linux/ethtool.h | 2 + net/ethtool/common.c | 2 + net/ethtool/linkmodes.c | 2 + 6 files changed, 92 insertions(+), 4 deletions(-) -- 2.28.0
