Re: Dead Kconfig Option OMAP4_ERRATA_I688

[santosh shilimkar]

On 2/25/2015 9:14 AM, Tony Lindgren wrote:
> Hi,
>
> Adding Santosh to Cc on this one.
>
> * Stefan Hengelein <stefan.hengelein@xxxxxx> [150225 09:13]:
> > During the research for my masters thesis i came across the
> > OMAP4_ERRATA_I688 option and realized, it is never possible to enable
> > this option.
> >
> > The a62a6e98 commit added the "&& !ARCH_MULTIPLATFORM" dependency to
> > disable this option for multiplatforms. However, because of enclosing
> > dependencies, this option isn't available for non-MULTIPLATFORM
> > configurations either.
>
> Yes there is no clean way currently to enable this errata for
> multiplatform.
Right.To fix this, the barrier code needs to be run-time patched.

> > CONFIG_OMAP4_ERRATA_I688 is defined in the menu "TI OMAP/AM/DM/DRA
> > Family" which depends on ARCH_MULTI_V6 || ARCH_MULTI_V7. (in
> > arch/arm/mach-omap2/Kconfig)
> >
> > ARCH_MULTI_V6 and ARCH_MULTI_V7 however are defined in the menu
> > "Multiple platform selection" which depends on ARCH_MULTIPLATFORM (in
> > arch/arm/Kconfig)
> >
> > Which is a contradiction.
> >
> > There are no selects on OMAP4_ERRATA_I688, which would ignore
> > dependencies, either.
> >
> > The question is:
> > Was disabling this option for non-MULTIPLATFORM configurations also intentional?
> >
> > i have added a minimal example of the problem.
>
>  From what I remember the plan was to try to come up with a
> multiplatform friendly way of doing this errata. Santosh,
> any suggestions here? Should we just remove the code as it
> seems nobody has complained about it for a few years now?
I have to agree to with you on this.

Regards,
Santosh
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