Upstreaming Nuvoton EMC (100 Mbit Ethernet MAC Controller) support

Upstreaming Nuvoton EMC (100 Mbit Ethernet MAC Controller) support

[Jonathan Neuschäfer]

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Hello Avi and others,

in my ongoing project to support the Nuvoton WPCM450 BMC in mainline
Linux, I have reached the point where the next useful step would be
Ethernet support. The WPCM450 contains a Nuvoton EMC, which is also used
in some older Winbond SoCs, and newer Nuvoton NPCM7xx BMCs.

In my downstream branch I have a EMC driver based on the W90P910
Ethernet driver that was part of mainline Linux in the past but has
since been removed. My version of the driver is heavily refactored,
though.

Nuvoton's downstream repository[1] also contains a EMC driver, albeit a
different one.

Is the Nuvoton BMC team interested in upstreaming EMC support at the
moment?


Best regards,
Jonathan


[1]: https://github.com/Nuvoton-Israel/linux

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Re: Upstreaming Nuvoton EMC (100 Mbit Ethernet MAC Controller) support

[Joel Stanley]

On Fri, 28 Apr 2023 at 19:15, Jonathan Neuschäfer <j.neuschaefer@gmx.net> wrote:
>
> Hello Avi and others,
>
> in my ongoing project to support the Nuvoton WPCM450 BMC in mainline
> Linux, I have reached the point where the next useful step would be
> Ethernet support. The WPCM450 contains a Nuvoton EMC, which is also used
> in some older Winbond SoCs, and newer Nuvoton NPCM7xx BMCs.

That would be a great contribution.

I have a npcm750 eval board that I can test it on, please cc me when
you post the patches.

Cheers,

Joel

Re: Upstreaming Nuvoton EMC (100 Mbit Ethernet MAC Controller) support

[Avi Fishman]

Hi Jonathan,

Indeed this will be great.
Note that the code has some workarounds in its implementation.
See updated version at:
https://github.com/Nuvoton-Israel/linux/tree/NPCM-5.15-OpenBMC/drivers/net/ethernet/nuvoton
also, long time ago I started the progress of upstreaming and stopped, see:
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2067239.html

Thanks,
Avi

On Tue, May 2, 2023 at 9:44 AM Joel Stanley <joel@jms.id.au> wrote:
>
> On Fri, 28 Apr 2023 at 19:15, Jonathan Neuschäfer <j.neuschaefer@gmx.net> wrote:
> >
> > Hello Avi and others,
> >
> > in my ongoing project to support the Nuvoton WPCM450 BMC in mainline
> > Linux, I have reached the point where the next useful step would be
> > Ethernet support. The WPCM450 contains a Nuvoton EMC, which is also used
> > in some older Winbond SoCs, and newer Nuvoton NPCM7xx BMCs.
>
> That would be a great contribution.
>
> I have a npcm750 eval board that I can test it on, please cc me when
> you post the patches.
>
> Cheers,
>
> Joel



--
Regards,
Avi

Re: Upstreaming Nuvoton EMC (100 Mbit Ethernet MAC Controller) support

[Jonathan Neuschäfer]

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Hi everyone,

On Tue, May 02, 2023 at 06:44:26AM +0000, Joel Stanley wrote:
> On Fri, 28 Apr 2023 at 19:15, Jonathan Neuschäfer <j.neuschaefer@gmx.net> wrote:
> >
> > Hello Avi and others,
> >
> > in my ongoing project to support the Nuvoton WPCM450 BMC in mainline
> > Linux, I have reached the point where the next useful step would be
> > Ethernet support. The WPCM450 contains a Nuvoton EMC, which is also used
> > in some older Winbond SoCs, and newer Nuvoton NPCM7xx BMCs.
> 
> That would be a great contribution.
> 
> I have a npcm750 eval board that I can test it on, please cc me when
> you post the patches.

Unfortunately, I haven't been able to work on this project in quite a
while, due to personal circumstances. I'm not sure when I'll be able to
continue, but I still intend to do it.


Jonathan

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Re: Upstreaming Nuvoton EMC (100 Mbit Ethernet MAC Controller) support

[Joel Stanley]

On Sun, 13 Aug 2023 at 23:29, Jonathan Neuschäfer <j.neuschaefer@gmx.net> wrote:
> > I have a npcm750 eval board that I can test it on, please cc me when
> > you post the patches.
>
> Unfortunately, I haven't been able to work on this project in quite a
> while, due to personal circumstances. I'm not sure when I'll be able to
> continue, but I still intend to do it.

No worries. Hope all is well. It will still be waiting when you next
have time to hack on it.

Cheers,

Joel