Following previous discussion [1] and the documentation update by Andrew [2]: Fix up the mode to account for the fixed TX delay on the AM65 CPSW Ethernet controllers, similar to the way the icssg-prueth does it. For backwards compatibility, the "impossible" modes that claim to have a delay on the PCB are still accepted, but trigger a warning message. As Andrew suggested, I have also added a checkpatch check that requires a comment for any RGMII mode that is not "rgmii-id". No Device Trees are updated to avoid the warning for now, to give other projects syncing the Linux Device Trees some time to fix their drivers as well. I intend to submit an equivalent change for U-Boot's am65-cpsw-nuss driver as soon as the changes are accepted for Linux. Changelog v2: - Previous patch 1/4 has been dropped, has it has been replaced by [2] - Patches 1/3, 2/3: collected review and ack tags - Patch 3/3: - Fixed multiple typos noted during review - Extended to check .dtso in addition to .dts and .dtsi - Changed CHK() to WARN(), so the warning triggers without --strict [1] https://lore.kernel.org/lkml/d25b1447-c28b-4998-b238-92672434dc28@xxxxxxx/ [2] https://lore.kernel.org/all/20250430-v6-15-rc3-net-rgmii-delays-v2-1-099ae651d5e5@xxxxxxx/ commit c360eb0c3ccb ("dt-bindings: net: ethernet-controller: Add informative text about RGMII delays") Patch series v1: https://lore.kernel.org/all/cover.1744710099.git.matthias.schiffer@xxxxxxxxxxxxxxx/ Matthias Schiffer (3): dt-bindings: net: ti: k3-am654-cpsw-nuss: update phy-mode in example net: ethernet: ti: am65-cpsw: fixup PHY mode for fixed RGMII TX delay checkpatch: check for comment explaining rgmii(|-rxid|-txid) PHY modes Documentation/dev-tools/checkpatch.rst | 9 +++++++ .../bindings/net/ti,k3-am654-cpsw-nuss.yaml | 2 +- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 27 +++++++++++++++++-- scripts/checkpatch.pl | 12 +++++++++ 4 files changed, 47 insertions(+), 3 deletions(-) -- TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht München, HRB 105018 Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider https://www.tq-group.com/
