linux-kernel - Re: [PATCH v2] drm/imagination: DRM_POWERVR should depend on ARCH

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Date: Thu, 15 Feb 2024 17:36:21 -0600
From: Adam Ford <aford173@...il.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Maxime Ripard <mripard@...nel.org>, Frank Binns <frank.binns@...tec.com>, 
	Matt Coster <matt.coster@...tec.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Thomas Zimmermann <tzimmermann@...e.de>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	Sarah Walker <sarah.walker@...tec.com>, dri-devel@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org, Javier Martinez Canillas <javierm@...hat.com>, 
	Nishanth Menon <nm@...com>, Marek Vasut <marek.vasut@...lbox.org>, 
	Linux-Renesas <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH v2] drm/imagination: DRM_POWERVR should depend on ARCH_K3

On Thu, Feb 15, 2024 at 11:22 AM Adam Ford <aford173@...il.com> wrote:
>
> On Thu, Feb 15, 2024 at 11:10 AM Adam Ford <aford173@...il.com> wrote:
> >
> > On Thu, Feb 15, 2024 at 10:54 AM Geert Uytterhoeven
> > <geert@...ux-m68k.org> wrote:
> > >
> > > Hi Maxime,
> > >
> > > On Thu, Feb 15, 2024 at 5:18 PM Maxime Ripard <mripard@...nelorg> 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.
> >
> I should have doubled checked the repo contents before I sent my last
> e-mail , but it appears the firmware  [2] for the RZ/G2M, might be
> present now. I don't know if there are driver updates necessary. I
> checked my e-mails, but I didn't see any notification, or I would have
> tried it earlier.  Either way, thank you Frank for adding it.  I'll
> try to test when I have some time.
>

I don't have the proper version of Mesa setup yet, but for what it's
worth, the firmware loads without error, and it doesn't hang.

[    9.787836] powervr fd000000.gpu: [drm] loaded firmware
powervr/rogue_4.45.2.58_v1.fw
[    9.787861] powervr fd000000.gpu: [drm] FW version v1.0 (build 6513336 OS)


adam
> > adam
> >
> > [1] https://gitlab.freedesktop.org/frankbinns/linux-firmware/-/tree/powervr/powervr?ref_type=heads
>
> [2] - https://gitlab.freedesktop.org/frankbinns/linux-firmware/-/commit/fecb3caebf29f37221fe0a20236e5e1415d39d0b
>
> >
> >
> > >
> > > 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@...ux-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