Re: [PATCH 2/2] i2c: designware: Add support for AMD I2C controller

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On Mon, Sep 22, 2014 at 02:16:25PM +0000, Vineet Gupta wrote:
> On Monday 22 September 2014 07:30 PM, Mika Westerberg wrote:
> >>> COMMON_CLK is not selected by the ARC architecture in general. However,
> >>> > > we do select COMMON_CLK in the TB10x platform which uses the designware
> >>> > > I2C driver so this new dependency is no problem for us.
> >>> > >
> >>> > > Vineet,
> >>> > >
> >>> > > Do you see any issues with this on other existing ARC platforms, e.g.
> >>> > > arcfpga?
> >> > 
> >> > So what needs to be done, COMMON_CLK needs to be defined in arch/arc/Kconfig ? And
> >> > if so why ?
> > Without COMMON_CLK, you are not able to select I2C_DESIGNWARE_PLATFORM
> > anymore. So if something on ARC depends on this driver then we either
> > need the COMMON_CLK there or figure out alternative way to fix Carl's
> > problem.
> 
> I have not seen the orig patch, but it seems COMMON_CLK is already being selected
> by TB10x, do we still need it in arch/arcKconfig, for all ARC platforms ?

Only if the driver is being used by something else than TB10x on ARC. So
that we don't cause regressions to existing users.
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