Hello everyone, This series follows (albeit with a lot of delay) the work that was initiated when USGMII support was added a while ago [1], through the QUSGMII variant. One of the differences between the QUSGMII mode and QSGMII is the possibility to pass so-called "Extensions" within the preamble. So far, the only extension documented in the USGMII standard is to pass a 32-bits timestamp through the preamble, but the standard mentions other possible usages in the future, such as a MACSec sectag for example. This series aims at adding support for such extensions and proposes a phylib API to manipulate these. It includes an example using the lan8814 PHY driver and the LAN966x MAC driver, where both have to agree on using this mode to convey the nanoseconds part of a PTP timestamp (the seconds part is still retreived through MDIO accesses). Thanks, Maxime [1] : https://lore.kernel.org/netdev/20220519135647.465653-1-maxime.chevallier@xxxxxxxxxxx/ Maxime Chevallier (3): net: phy: Add support for inband extensions net: lan966x: Allow using PCH extension for PTP net: phy: micrel: Add QUSGMII support and PCH extension Documentation/networking/phy.rst | 70 ++++++++++++++ .../ethernet/microchip/lan966x/lan966x_main.h | 1 + .../ethernet/microchip/lan966x/lan966x_port.c | 12 +++ .../ethernet/microchip/lan966x/lan966x_ptp.c | 94 +++++++++++++++++-- .../ethernet/microchip/lan966x/lan966x_regs.h | 64 +++++++++++++ drivers/net/phy/micrel.c | 84 ++++++++++++++++- drivers/net/phy/phy.c | 86 +++++++++++++++++ include/linux/phy.h | 28 ++++++ 8 files changed, 425 insertions(+), 14 deletions(-) -- 2.43.0
