[PATCH v2] drm/imagination: DRM_POWERVR should depend on ARCH_K3

[Adam Ford]

On Thu, Feb 15, 2024 at 10:54 AM Geert Uytterhoeven
<geert at linux-m68k.org> wrote:
>
> Hi Maxime,
>
> On Thu, Feb 15, 2024 at 5:18 PM Maxime Ripard <mripard at kernel.org> wrote:
> > On Thu, Feb 15, 2024 at 01:50:09PM +0100, Geert Uytterhoeven wrote:
> > > Using the Imagination Technologies PowerVR Series 6 GPU requires a
> > > proprietary firmware image, which is currently only available for Texas
> > > Instruments K3 AM62x SoCs.  Hence add a dependency on ARCH_K3, to
> > > prevent asking the user about this driver when configuring a kernel
> > > without Texas Instruments K3 Multicore SoC support.
> >
> > This wasn't making sense the first time you sent it, and now that commit
> > log is just plain wrong. We have firmwares for the G6110, GX6250,
> > GX6650, BXE-4-32, and BXS-4-64 models, which can be found on (at least)
> > Renesas, Mediatek, Rockchip, TI and StarFive, so across three
>
> I am so happy to be proven wrong!
> Yeah, GX6650 is found on e.g. R-Car H3, and GX6250 on e.g. R-Car M3-W.
>
> > architectures and 5 platforms. In two months.
>
> That sounds like great progress, thanks a lot!
>
Geert,

> Where can I find these firmwares? Linux-firmware[1] seems to lack all
> but the original K3 AM62x one.

I think PowerVR has a repo [1], but the last time I checked it, the
BVNC for the firmware didn't match what was necessary for the GX6250
on the RZ/G2M.  I can't remember what the corresponding R-Car3 model
is.  I haven't tried recently because I was told more documentation
for firmware porting would be delayed until everything was pushed into
the kernel and Mesa.  Maybe there is a better repo and/or newer
firmware somewhere else.

adam

[1] https://gitlab.freedesktop.org/frankbinns/linux-firmware/-/tree/powervr/powervr?ref_type=heads


>
> Thanks again!
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/
>
> 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