Re: [PATCH V3] cpufreq: qoriq: Register cooling device based on device tree

Li Yang
2016-02-26T23:31:22Z

On Fri, Feb 26, 2016 at 5:16 PM, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> wrote:
> On Friday 26 February 2016 17:07:09 Li Yang wrote:
>>
>> I don't have a perfect solution either. But I think this is still
>> better than making cpufreq not usable. The cpufreq driver will print
>> out an error message if thermal is not reachable. Maybe this can
>> relief the confusion a little bit?
>
> With my patch, the configuration will just force the cpufreq
> driver to be a loadable module as well if thermal is a module,
> so the dependency can be resolved by loading the thermal module first.

It would be perfect if this it true. But I tried with the following
change, it just makes QORIQ_CPUFREQ non-selectable if THERMAL=m.

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index dcb972a38fbc..ca05037dd565 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -297,6 +297,7 @@ endif
config QORIQ_CPUFREQ
tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
depends on OF && COMMON_CLK && (PPC_E500MC || ARM)
+ depends on !CPU_THERMAL || THERMAL=y
select CLK_QORIQ
help
This adds the CPUFreq driver support for Freescale QorIQ SoCs

Regards,
Leo
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