Re: [PATCH v7 1/3] Documentation: common clk API

Sascha Hauer
2012-03-21T09:10:37Z

On Wed, Mar 21, 2012 at 01:44:01AM -0600, Paul Walmsley wrote:
> Hello Saravana,
>
> Certainly a Kconfig help text change seems trivial enough. But even the
> resistance to CONFIG_EXPERIMENTAL has been quite surprising to me, given
> that every single defconfig in arch/arm/defconfig sets it:
>
> $ find arch/arm/configs -type f | wc -l
> 122
> $ fgrep -r CONFIG_EXPERIMENTAL=y arch/arm/configs | wc -l
> 122
> $
>
> (that includes iMX, by the way...)
>
> Certainly, neither Kconfig change is going to prevent us on OMAP from
> figuring out what else is needed to convert our platform to the common
> clock code. And given the level of enthusiasm on the lists, I don't think
> it's going to prevent many of the other ARM platforms from experimenting
> with the conversion, either.
>
> So it would be interesting to know more about why you (or anyone else)
> perceive that the Kconfig changes would be harmful.

Mainly because COMMON_CLK is an invisible option which has to be
selected by architectures. So with the Kconfig change we either have to:

config ARCH_MXC
depends on EXPERIMENTAL

or:

config ARCH_MXC
select EXPERIMENTAL
select COMMON_CLK

Neither of both seems very appealing to me.

You can add a warning to the Kconfig help text if you like, I
have no problem with that. As you said it will prevent noone
from using it anyway.

Sascha

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