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SubjectRe: [PATCH v2 01/03] clocksource: Add Kconfig entries for CMT, MTU2, TMU and STI
On 11/14/2013 01:40 PM, Arnd Bergmann wrote:
> On Wednesday 13 November 2013, John Stultz wrote:
>>> +config EM_TIMER_STI
>>> + bool "STI timer driver"
>>> + default y if ARM
>>> + help
>>> + This enables build of the STI timer driver.
>>
>>
>> So since I do want to avoid adding user-selectable configs if
>> possible, here are some concrete thoughts on this patch, trying to
>> provide an example from my more abstract rants down thread. :)
>
> I think we should be using the CONFIG_BUILD_TEST (or whatever
> it's called) here to allow building the drivers everywhere but
> at the same time be specific with the platform. How about this:
>
> config EM_TIMER_STI
> bool "Renesas EMMA EV2 STI timer driver" if BUILD_TEST && !ARCH_EMEV2
> default ARCH_EMEV2
> help
> ...
>
> This makes it a silent option that is set correctly all the time
> but lets you enable it everywhere when BUILD_TEST is set.

It sounds like a good compromise.

> We could skip the "&& !ARCH_EMEV2" part to allow building an
> EMEV2 kernel without this driver when build testing if that
> is possible.



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