From: Viresh Kumar <viresh.kumar@linaro.org>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: ulf.hansson@linaro.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Kevin Hilman <khilman@kernel.org>, Pavel Machek <pavel@ucw.cz>,
Len Brown <len.brown@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
Stephen Boyd <sboyd@kernel.org>, Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-pm@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
nks@flawful.org, georgi.djakov@linaro.org,
Stephan Gerhold <stephan@gerhold.net>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org
Subject: Re: [PATCH V2 1/2] opp: Allow dev_pm_opp_get_opp_table() to return -EPROBE_DEFER
Date: Tue, 20 Oct 2020 11:24:32 +0530 [thread overview]
Message-ID: <20201020055431.ln7d57x76f7z6j5k@vireshk-i7> (raw)
In-Reply-To: <20201020050557.a3b2nk33eeyxnvl2@vireshk-i7>
On 20-10-20, 10:35, Viresh Kumar wrote:
> On 19-10-20, 15:10, Sudeep Holla wrote:
> > On Mon, Oct 19, 2020 at 04:05:35PM +0530, Viresh Kumar wrote:
> > > On 19-10-20, 11:12, Sudeep Holla wrote:
> > > > Yes it has clocks property but used by SCMI(for CPUFreq/DevFreq) and not
> > > > by any clock provider driver. E.g. the issue you will see if "clocks"
> > > > property is used instead of "qcom,freq-domain" on Qcom parts.
> > >
> > > Okay, I understand. But what I still don't understand is why it fails
> > > for you. You have a clocks property in DT for the CPU, the OPP core
> > > tries to get it and will get deferred-probed, which will try probing
> > > at a later point of time and it shall work then. Isn't it ?
> > >
> >
> > Nope unfortunately. We don't have clock provider, so clk_get will
> > never succeed and always return -EPROBE_DEFER.
>
> Now this is really bad, you have a fake clocks property, how is the
> OPP core supposed to know it ? Damn.
What about instead of fixing the OPP core, which really is doing the
right thing, we fix your driver (as you can't fix the DT) and add a
dummy CPU clk to make it all work ?
--
viresh
next prev parent reply other threads:[~2020-10-20 5:54 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 9:09 [PATCH V2 1/2] opp: Allow dev_pm_opp_get_opp_table() to return -EPROBE_DEFER Viresh Kumar
2020-08-24 9:09 ` [PATCH V2 2/2] cpufreq: dt: Refactor initialization to handle probe deferral properly Viresh Kumar
[not found] ` <CGME20200901085708eucas1p231ccacd7b41685ece92ee21e3b726f28@eucas1p2.samsung.com>
2020-09-01 8:57 ` Marek Szyprowski
2020-09-01 9:45 ` Viresh Kumar
2020-09-01 10:05 ` Marek Szyprowski
2020-09-01 10:12 ` Viresh Kumar
2020-10-13 9:47 ` Geert Uytterhoeven
2020-10-13 9:56 ` Viresh Kumar
2020-10-14 16:40 ` Geert Uytterhoeven
2020-10-16 5:03 ` Viresh Kumar
2020-10-16 6:44 ` Geert Uytterhoeven
2020-10-16 8:07 ` Viresh Kumar
2020-10-27 16:29 ` Geert Uytterhoeven
2020-10-28 5:48 ` Viresh Kumar
2020-10-28 9:49 ` Geert Uytterhoeven
2020-10-28 9:52 ` Viresh Kumar
2020-08-24 9:17 ` [PATCH V2 1/2] opp: Allow dev_pm_opp_get_opp_table() to return -EPROBE_DEFER Krzysztof Kozlowski
2020-08-24 11:08 ` Ulf Hansson
2020-08-24 11:39 ` Stephan Gerhold
2020-10-15 18:05 ` Sudeep Holla
2020-10-16 4:24 ` Viresh Kumar
2020-10-16 6:00 ` Sudeep Holla
2020-10-16 11:12 ` Sudeep Holla
2020-10-16 15:28 ` Stephan Gerhold
2020-10-19 4:58 ` Viresh Kumar
2020-10-19 9:17 ` Sudeep Holla
2020-10-19 9:24 ` Viresh Kumar
2020-10-19 10:12 ` Sudeep Holla
2020-10-19 10:35 ` Viresh Kumar
2020-10-19 14:10 ` Sudeep Holla
2020-10-20 5:05 ` Viresh Kumar
2020-10-20 5:54 ` Viresh Kumar [this message]
2020-10-20 9:37 ` Sudeep Holla
2020-10-20 9:41 ` Viresh Kumar
2020-10-20 9:52 ` Sudeep Holla
2020-10-20 9:59 ` Viresh Kumar
2020-10-27 22:24 ` Guenter Roeck
2020-10-28 4:06 ` Viresh Kumar
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