From: Brian Masney <bmasney@redhat.com>
To: Nishanth Menon <nm@ti.com>
Cc: a-christidis@ti.com, Tero Kristo <kristo@kernel.org>,
Santosh Shilimkar <ssantosh@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
Michael Walle <mwalle@kernel.org>,
Kevin Hilman <khilman@baylibre.com>, Randolph Sapp <rs@ti.com>
Subject: Re: [PATCH v2] clk: keystone: don't cache clock rate
Date: Tue, 12 May 2026 10:51:00 -0400 [thread overview]
Message-ID: <agM-VB-ToGFNphfu@redhat.com> (raw)
In-Reply-To: <20260512104848.4axgjeto6i7ejvli@retorted>
Hi Nishanth,
On Tue, May 12, 2026 at 05:48:48AM -0500, Nishanth Menon wrote:
> On 10:36-20260511, Brian Masney wrote:
> > On Thu, May 07, 2026 at 11:09:34AM -0500, a-christidis@ti.com wrote:
> > > From: Michael Walle <mwalle@kernel.org>
> > >
> > > The TISCI firmware will return 0 if the clock or consumer is not
> > > enabled although there is a stored value in the firmware. IOW a call to
> > > set rate will work but at get rate will always return 0 if the clock is
> > > disabled.
> > > The clk framework will try to cache the clock rate when it's requested
> > > by a consumer. If the clock or consumer is not enabled at that point,
> > > the cached value is 0, which is wrong. Thus, disable the cache
> > > altogether.
> > >
> > > Signed-off-by: Michael Walle <mwalle@kernel.org>
> > > Reviewed-by: Kevin Hilman <khilman@baylibre.com>
> > > Reviewed-by: Randolph Sapp <rs@ti.com>
> > > Reviewed-by: Nishanth Menon <nm@ti.com>
> > > Signed-off-by: Antonios Christidis <a-christidis@ti.com>
> >
> > Reviewed-by: Brian Masney <bmasney@redhat.com>
> >
>
> Brian,
>
> Could you clarify if I need to take it via my tree to arnd or if this
> patch will go via the clk tree?
Sorry, I'm not sure what Stephen prefers here. An argument could be made
for either approach. I would just go with whatever you have done in the
past.
Brian
next prev parent reply other threads:[~2026-05-12 14:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-07 16:09 [PATCH v2] clk: keystone: don't cache clock rate a-christidis
2026-05-11 14:36 ` Brian Masney
2026-05-12 10:48 ` Nishanth Menon
2026-05-12 14:51 ` Brian Masney [this message]
2026-05-12 17:16 ` Nishanth Menon
2026-06-03 16:00 ` Nishanth Menon
2026-06-03 16:49 ` Brian Masney
2026-06-04 2:59 ` Nishanth Menon
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