linux-kernel - Re: [PATCH v2 4/4] cpufreq: pxa: convert to clock API

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Message-ID: <877f902hh6.fsf@belgarion.home>
Date:   Sat, 22 Oct 2016 23:37:09 +0200
From:   Robert Jarzmik <robert.jarzmik@...e.fr>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Rafael Wysocki <rjw@...ysocki.net>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 4/4] cpufreq: pxa: convert to clock API

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

> On 15-10-16, 21:57, 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>
>> ---
>> Since v1: added !OF Kconfig dependency
>> ---
>>  drivers/cpufreq/Kconfig.arm      |   2 +-
>>  drivers/cpufreq/pxa2xx-cpufreq.c | 191 ++++++++-------------------------------
>>  2 files changed, 40 insertions(+), 153 deletions(-)
>
> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

Okay, after some more testing, I'd like to remove the !OF for next iteration.
The reason is that I have a usecase where I have a single kernel image with
devictree support (ie CONFIG_OF=y), but with support for both devicetree and
legacy platforms. In this case, a platform such as lubbock can boot :
 - with devicetree
 - with legacy arch/arm/mach-pxa/lubbock.c

In this kernel, the !OF Kconfig prevents the legacy version from working, as
pxa2xx-cpufreq is descarded even if it is needed in the legacy version.

Therefore, I'd like to respin without this !OF.

Cheers.

-- 
Robert