linux-kernel - Re: [PATCH 1/2] firmware: include drivers/firmware/Kconfig unconditionally

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Date:   Tue, 28 Sep 2021 12:25:19 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     Arnd Bergmann <arnd@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Simon Trimmer <simont@...nsource.cirrus.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Helge Deller <deller@....de>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        the arch/x86 maintainers <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-ia64@...r.kernel.org,
        "open list:BROADCOM NVRAM DRIVER" <linux-mips@...r.kernel.org>,
        Parisc List <linux-parisc@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH 1/2] firmware: include drivers/firmware/Kconfig
 unconditionally

On Tue, Sep 28, 2021 at 09:24:00AM +0000, Charles Keepax wrote:
> On Tue, Sep 28, 2021 at 10:51:36AM +0200, Arnd Bergmann wrote:

> > Other DSPs use the drivers/remoteproc/ subsystem, but that
> > is more for general-purpose DSPs that can load application
> > specific firmware rather than loading a single firmware blob
> > as you'd normally do with the request_firmware() style interface.

> > Not sure if that fits what you do. Can you point to a high-level
> > description of what this DSP does besides audio, and how
> > flexible it is? That might help find the right place for this.

> Hm... wasn't aware of that one, we should probably investigate that
> a little more at this end. From a quick look, seems a bit more like
> it is designed for much larger more general purpose probably memory
> mapped DSPs. I guess our code is a little more firmware parsing
> and loading, and a bit less generic remote proceedure call stuff.

Right, that was why I didn't suggest remoteproc - the DSPs wm_adsp
covers seem much smaller than fits comfortably with remoteproc.  You
probably could make it fit though.

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