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SubjectRe: [PATCH v2 0/2] Add macb support for SiFive FU540-C000
On Mon, 17 Jun 2019, Andreas Schwab wrote:

> On Jun 17 2019, Paul Walmsley <paul.walmsley@sifive.com> wrote:
>
> > On Mon, 17 Jun 2019, Andreas Schwab wrote:
> >
> >> On Jun 17 2019, Paul Walmsley <paul.walmsley@sifive.com> wrote:
> >>
> >> > Looks to me that it shouldn't have an impact unless the DT string is
> >> > present, and even then, the impact might simply be that the MACB driver
> >> > may not work?
> >>
> >> If the macb driver doesn't work you have an unusable system, of course.
> >
> > Why?
>
> Because a system is useless without network.

From an upstream Linux point of view, Yash's patches should be an
improvement over the current mainline kernel situation, since there's
currently no upstream support for the (SiFive-specific) TX clock switch
register. With the right DT data, and a bootloader that handles the PHY
reset, I think networking should work after his patches are upstream --
although I myself haven't tried this yet.


- Paul

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