From: Stephen Boyd <sboyd@kernel.org>
To: Arun KS <arunks.linux@gmail.com>,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: mturquette@baylibre.com, Arun KS <getarunks@gmail.com>
Subject: Re: Question on pre running clocks
Date: Mon, 23 Oct 2023 19:42:01 -0700 [thread overview]
Message-ID: <a21f9855c655e384501ae04636cf5297.sboyd@kernel.org> (raw)
In-Reply-To: <CAKZGPAMj6umUvoc+supfTU4juGoUXw78UiveUJgZQFE_ErdGbg@mail.gmail.com>
Quoting Arun KS (2023-10-20 00:09:05)
> + linux-clk
>
> On Fri, Oct 20, 2023 at 12:37 PM Arun KS <arunks.linux@gmail.com> wrote:
> >
> > Hello,
> >
> > Lets say there is a clock which is enabled by bootloaders and is pre
> > running as linux boots.
> > Is it mandatory for the client drivers to call clk_prepare_enable() on
> > them to initialise the enable_count to 1?
Yes.
> >
> > Or is there a way we can specify to the kernel that this clock is
> > already enabled by bootloader and initialise the enable_count for this
> > clock to 1.
No there isn't.
> >
> > Because otherwise, clk_disable() prints a WARN() if a client driver
> > uses clock handle where clk_prepare_enable() is not called.
> >
> > I grep through the code, but could find any details. Appreciate any pointers.
> >
> > Regards,
> > Arun
prev parent reply other threads:[~2023-10-24 2:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-20 7:07 Arun KS
2023-10-20 7:09 ` Arun KS
2023-10-24 2:42 ` Stephen Boyd [this message]
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