[PATCH 1/3] net: ethernet: stmmac: dwmac-rk: Disable delayline if it is invalid

[Sebastian Reichel]

Hi,

On Fri, Jun 24, 2022 at 06:52:26PM +0200, Andrew Lunn wrote:
> > > So it seems to me you are changing the documented default. You cannot
> > > do that, this is ABI.
> > 
> > Right. I suppose we either need a disable value or an extra property. I
> > can add support for supplying (-1) from DT. Does that sounds ok to
> > everyone?
> 
> I'm missing the big picture.
> 
> Does the hardware you are adding not support delays? If so, rather
> than using the defaults, don't do anything. And if a value is
> supplied, -EINVAL?

The Rockchip hardware supports enabling/disabling delays and
configuring a delay value of 0x00-0x7f. For the RK3588 evaluation
board the RX delay should be disabled.

-- Sebastian
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