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List:       linux-tegra
Subject:    Re: [PATCH 02/11] ARM: tegra: add a flag for tegra_disable_clean_inv_dcache to do LoUIS or ALL
From:       Joseph Lo <josephl () nvidia ! com>
Date:       2013-06-27 10:07:45
Message-ID: 1372327665.9389.29.camel () jlo-ubuntu-64 ! nvidia ! com
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On Thu, 2013-06-27 at 03:31 +0800, Stephen Warren wrote:
> On 06/25/2013 03:27 AM, Joseph Lo wrote:
> > Adding a flag for tegra_disable_clean_inv_dcache to flush cache as LoUIS
> > or ALL. After this patch, the v7_flush_dcache_louis is used for CPU hotplug
> > and CPU suspend in CPU power down (e.g. CPU idle power-down mode) case. And
> > the v7_flush_dcache_all is used for CPU cluster power down (e.g. suspend to
> > LP2 mode).
> 
> > diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h
> 
> > +/* flag of tegra_disable_clean_inv_dcache to do LoUIS or all */
> > +#define TEGRA_FLUSH_CACHE_LOUIS	0x10
> > +#define TEGRA_FLUSH_CACHE_ALL	0x20
> 
> Is there a reason those two values aren't just 0 and 1; they only seem
> to be used internally to switch between two function calls, and not
> passed to those calls or written to HW.

No. Will fix.

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