[PATCH v2 12/12] [UNTESTED] riscv: dts: starfive: beaglev-starlight: Enable gmac

[Geert Uytterhoeven]

Hi Cristian,

On Fri, Nov 17, 2023 at 9:59 AM Cristian Ciocaltea
<cristian.ciocaltea at collabora.com> wrote:
> On 11/17/23 10:49, Cristian Ciocaltea wrote:
> > On 11/17/23 10:37, Geert Uytterhoeven wrote:
> >> On Thu, Nov 16, 2023 at 6:55 PM Conor Dooley <conor at kernel.org> wrote:
> >>> On Thu, Nov 16, 2023 at 03:15:46PM +0200, Cristian Ciocaltea wrote:
> >>>> On 10/30/23 00:53, Cristian Ciocaltea wrote:
> >>>>> On 10/29/23 20:46, Andrew Lunn wrote:
> >>>>>> On Sun, Oct 29, 2023 at 06:27:12AM +0200, Cristian Ciocaltea wrote:
> >>>>>>> The BeagleV Starlight SBC uses a Microchip KSZ9031RNXCA PHY supporting
> >>>>>>> RGMII-ID.
> >>>>>>>
> >>>>>>> TODO: Verify if manual adjustment of the RX internal delay is needed. If
> >>>>>>> yes, add the mdio & phy sub-nodes.
> >>>>>>
> >>>>>> Please could you try to get this tested. It might shed some light on
> >>>>>> what is going on here, since it is a different PHY.
> >>>>>
> >>>>> Actually, this is the main reason I added the patch. I don't have access
> >>>>> to this board, so it would be great if we could get some help with testing.
> >>>>
> >>>> @Emil, @Conor: Any idea who might help us with a quick test on the
> >>>> BeagleV Starlight board?
> >>>
> >>> I don't have one & I am not sure if Emil does. Geert (CCed) should have
> >>
> >> I believe Esmil has.
> >>
> >>> one though. Is there a specific test you need to have done?
> >>
> >> I gave it a try, on top of latest renesas-drivers[1].
>
> [...]
>
> >>
> >> Looks like it needs more non-coherent support before we can test
> >> Ethernet.
> >
> > Hi Geert,
> >
> > Thanks for taking the time to test this!
> >
> > Could you please check if the following are enabled in your kernel config:
> >
> >   CONFIG_DMA_GLOBAL_POOL
> >   CONFIG_RISCV_DMA_NONCOHERENT
> >   CONFIG_RISCV_NONSTANDARD_CACHE_OPS
> >   CONFIG_SIFIVE_CCACHE

CONFIG_DMA_GLOBAL_POOL and CONFIG_RISCV_NONSTANDARD_CACHE_OPS were
indeed no longer enabled, as they cannot be enabled manually.

After cherry-picking commit e14ad9ff67fd51dc ("riscv: errata: Add
StarFive JH7100 errata") in esmil/visionfive these options become
enabled. Now it gets a bit further, but still lots of CCACHE DataFail
errors.

> Also please note the series requires the SiFive Composable Cache
> controller patches provided by Emil [1].
>
> [1]: https://lore.kernel.org/all/20231031141444.53426-1-emil.renner.berthing@canonical.com/

That series does not contain any Kconfig changes, so there must be
other missing dependencies?

Perhaps I should just defer to Emil ;-)

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds