On Mon, Jul 14, 2025 at 12:01:22PM +0200, Michael Walle wrote: > 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@xxxxxxxxxxxxxxx> > > Reviewed-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx> > > Reviewed-by: Andrew Lunn <andrew@xxxxxxx> > > 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. I agree, we need to see if this is a AM65 vs AM67 issue. rgmii-id would be correct if the MAC is not adding delays. Do you have access to the datasheets for both? Can you do a side by side comparison for the section which describes the fixed TX delay? Andrew
