linux-kernel - Re: [PATCH 0/4] cache: sifive_ccache: Auxiliary device support

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Date: Wed, 24 Apr 2024 22:20:00 +0100
From: Conor Dooley <conor@...nel.org>
To: Alexandre Ghiti <alex@...ti.fr>
Cc: Samuel Holland <samuel.holland@...ive.com>,
	linux-riscv@...ts.infradead.org,
	Paul Walmsley <paul.walmsley@...ive.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] cache: sifive_ccache: Auxiliary device support

On Wed, Apr 24, 2024 at 10:19:18PM +0200, Alexandre Ghiti wrote:
> Hi Samuel,
> 
> On 11/04/2024 01:22, Samuel Holland wrote:
> > As of commit c90847bcbfb6 ("cache: sifive_ccache: Partially convert to a
> > platform driver"), the cache subsystem binds a platform driver to the
> > Composable Cache's DT node. This prevents the perf subsystem from doing
> > the same for the new PMU driver[1]. To allow using both drivers at the
> > same time without conflicts or module linkage dependencies, attach the
> > PMU driver to the auxiliary device bus. While at it, prepare to use the
> > auxiliary device bus for the EDAC driver as well, which significantly
> > simplifies that driver. The actual EDAC driver conversion has to wait
> > another development cycle to avoid dependencies between git trees.
> > 
> > [1]: https://lore.kernel.org/linux-riscv/20240216000837.1868917-3-samuel.holland@sifive.com/
> > 
> > 
> > Samuel Holland (4):
> >    cache: sifive_ccache: Silence unused variable warning
> >    cache: sifive_ccache: Use of_iomap() helper
> >    cache: sifive_ccache: Export base address for child drivers
> >    cache: sifive_ccache: Add EDAC and PMU as auxiliary devices
> > 
> >   drivers/cache/Kconfig              |  1 +
> >   drivers/cache/sifive_ccache.c      | 94 +++++++++++++++++++++---------
> >   include/soc/sifive/sifive_ccache.h |  8 +++
> >   3 files changed, 74 insertions(+), 29 deletions(-)
> > 
> 
> I took a quick look and I'm not sure if the whole patchset is a fix for 6.9
> or if only patch 1 is?

Only the first patch is IMO, but it is a fix for a patch I applied so
it'll go this week via the soc tree with those auto-update fixes.

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