Re: [PATCH net-next 1/5] dt-bindings: net: add onsemi's TS2500/NCN26010 10BASE-T1S MACPHY

[Andrew Lunn]

> > Since it is a 10Mbps media, if the SPI speed is lower than 15MHz,
> > maybe it cannot keep up with the media? But this clock speed on its
> > own is not the deciding factor, there could be other users of the SPI
> > bus. I would expect the driver and device to keep working if the SPI
> > bus is saturated, just not give the full 10Mbps. And it would also be
> > a good test the device and driver do work correctly when the bus is
> > saturated.
> 
> 

> I should have given more information. If we configure SPI at lower
> speed, it may start losing frames as it can't sustain the PHY's
> speed. Please let me know If I should remove it.

So it is not really a requirement. Please add a comment that at speed
of at least 15MHz is recommended in order to obtain line rate
performance.

   Andrew