[PATCH v2 5/5] OMAP4: powerdomain data: Remove unsupported MPU powerdomain state

[Paul Walmsley]

On Fri, 1 Jul 2011, Benoit Cousson wrote:

> From: Santosh Shilimkar <santosh.shilimkar at ti.com>
> 
> On OMAP4430 devices, because of boot ROM code bug, MPU OFF state can't
> be attempted independently. When coming out of MPU OFF state, ROM code
> disables the clocks of IVAHD, TESLA which is not desirable. Hence the
> MPU OFF state is not usable on OMAP4430 devices.
> 
> OMAP4460 onwards, MPU OFF state will be descoped completely because
> the DDR firewall falls in MPU power domain. When the MPU hit OFF state,
> DDR won't be accessible for other initiators. The deepest state supported
> is open switch retention (OSWR) just like CORE and PER PD on OMAP4430.
> 
> So in summary MPU power domain OFF state is not supported on OMAP4
> and onwards designs. Thanks to new PRCM design, device off mode can
> still be achieved with power domains hitting OSWR state.
> 
> Signed-off-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
> Signed-off-by: Rajendra Nayak <rnayak at ti.com>
> [b-cousson at ti.com: Fix changelog typos]
> Signed-off-by: Benoit Cousson <b-cousson at ti.com>
> Cc: Paul Walmsley <paul at pwsan.com>

Thanks, this patch has been queued for 3.1 at 
git://git.pwsan.com/linux-2.6 in the 'hardware_workarounds_3.1' branch.


- Paul