linux-kernel - Re: [PATCH 6/6] cpufreq: pxa: convert to clock API

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Date:   Wed, 12 Oct 2016 10:29:05 +0200
From:   Robert Jarzmik <robert.jarzmik@...e.fr>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH 6/6] cpufreq: pxa: convert to clock API

Viresh Kumar <viresh.kumar@...aro.org> writes:

> On 12-10-16, 08:22, Robert Jarzmik wrote:
>> Viresh Kumar <viresh.kumar@...aro.org> writes:
>> 
>> > On 10-10-16, 22:09, Robert Jarzmik wrote:
>> >> As the clock settings have been introduced into the clock pxa drivers,
>> >> which are now available to change the CPU clock by themselves, remove
>> >> the clock handling from this driver, and rely on pxa clock drivers.
>> >> 
>> >> Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
>> >> ---
>> >>  drivers/cpufreq/pxa2xx-cpufreq.c | 191 ++++++++-------------------------------
>> >>  1 file changed, 39 insertions(+), 152 deletions(-)
>> >
>> > As you mentioned in the previous patch, why can't you use cpufreq-dt
>> > driver now and delete this one ?
>> 
>> PXA architecture have both legacy platform_data based configurations and new
>> devicetree based ones.
>
> I don't see any platform data specific code in this driver. What am I
> missing ?

In a legacy platform, ie. without devicetree, we have CONFIG_OF=n.
How would cpufreq-dt be usable in this case ?

You can see such a platform in arch/arm/configs/mainstone_defconfig and
arch/arm/mach-pxa/mainstone.c as an example.

Cheers.

-- 
Robert