Re: CVS commit: src/sys

[Tobias Nygren <tnn%NetBSD.org@localhost>]

On Fri, 30 Jul 2021 22:36:45 +0200
Tobias Nygren <tnn%NetBSD.org@localhost> wrote:

> On Fri, 30 Jul 2021 17:25:46 -0300 (ADT)
> Jared McNeill <jmcneill%invisible.ca@localhost> wrote:
> 
> > Why only A20?
> 
> It is the hardware I have on hand. If you know specifically which
> SoCs need this, the compat_data array can be extended.
> I guess maybe these also?
> allwinner,sun4i-a10
> allwinner,sun6i-a31

Apparently it can be an issue on relatively speaking newer SoCs too.
For example the H6 does not have DesignWare specific register,
and comes with 256-byte FIFO instead of 64-byte.

It's not possible to deduce from the manual what DesignWare revision
is used but I guess I can go over the data sheets of currently
released SoCs and build a matrix of the proper values regardless
of DesignWare revision.