[PATCH 2/2] ARM: vexpress: Enable platform-specific options in defconfig

[Pawel Moll]

On Thu, 2013-10-17 at 10:57 +0100, Sudeep KarkadaNagesha wrote:
> > +CONFIG_MTD_PHYSMAP=y
> > +CONFIG_MTD_PHYSMAP_OF=y
> 
> This could cause issues with CPUIdle on TC2. Since TC2 reset vector is in NOR
> flash, NOR flash has to be in Read mode when CPU resets and enter reset vector.
> But what I have seen is that NOR flash is left in Read Identifier Mode after the
> driver is initialised. So we need to make sure NOR device is in Read mode
> whenever CPU enters deeper C-states and also may have to register notifiers
> which seems overkill IMO. Most of the platform have separate(or secure) flash
> for this reason.

Oh boy, yes, I remember this now.

> Is it possible to disable flash on TC2 only in it's DT something like
>          flash at 0,00000000 {
>                 status = "disabled";
>          };	

But flash is innocent, really... I may just remove CPU_IDLE for the time
being.

Paweł