On Monday 14 April 2014 12:25:20 Dave Martin wrote:
> On Fri, Apr 11, 2014 at 11:31:49PM +0530, Abhilash Kesavan wrote:
> > On the Exynos5420 non-secure SYSRAM is used for secondary CPU bring-up,
> > so add a mapping for it.
> >
> > Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
> > Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
> > ---
> > arch/arm/mach-exynos/exynos.c | 11 +++++++++++
> > arch/arm/mach-exynos/include/mach/map.h | 1 +
> > 2 files changed, 12 insertions(+)
> >
> > diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
> > index b32a907..b1cf9d5 100644
> > --- a/arch/arm/mach-exynos/exynos.c
> > +++ b/arch/arm/mach-exynos/exynos.c
> > @@ -159,6 +159,15 @@ static struct map_desc exynos5250_iodesc[] __initdata = {
> > },
> > };
> >
> > +static struct map_desc exynos5420_iodesc[] __initdata = {
> > + {
> > + .virtual = (unsigned long)S5P_VA_SYSRAM_NS,
> > + .pfn = __phys_to_pfn(EXYNOS5420_PA_SYSRAM_NS),
> > + .length = SZ_4K,
> > + .type = MT_DEVICE,
> > + },
> > +};
> > +
>
> Regarding Arnd's NAK in
> http://lists.infradead.org/pipermail/linux-arm-kernel/2014-April/246936.html,
> this looks like another instance of the same thing.
>
> Arnd, what was your preferred solution? Should this be described in DT?
Yes. There are already patches on the list to do this right.
Arnd
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