[PATCH net-next v2 2/3] net: ethernet: ti: am65-cpsw: fixup PHY mode for fixed RGMII TX delay

[Michael Walle]

Hi,

On Tue Jun 24, 2025 at 12:53 PM CEST, Matthias Schiffer wrote:
> All am65-cpsw controllers have a fixed TX delay, so the PHY interface
> mode must be fixed up to account for this.
>
> Modes that claim to a delay on the PCB can't actually work. Warn people
> to update their Device Trees if one of the unsupported modes is specified.
>
> Signed-off-by: Matthias Schiffer <matthias.schiffer at ew.tq-group.com>
> Reviewed-by: Maxime Chevallier <maxime.chevallier at bootlin.com>
> Reviewed-by: Andrew Lunn <andrew at lunn.ch>

For whatever reason, this patch is breaking network on our board
(just transmission). We have rgmii-id in our devicetree which is now
modified to be just rgmii-rxid. The board has a TI AM67A (J722S) with a
Broadcom BCM54210E PHY. I'm not sure, if AM67A MAC doesn't add any
delay or if it's too small. I'll need to ask around if there are any
measurements but my colleague doing the measurements is on holiday
at the moment.

-michael
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 297 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20250714/237a43ed/attachment.sig>