linux-kernel - Re: [PATCH] soc: tegra: pmc: restrict compilation of suspend-related support to ARM

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Date:	Wed, 7 Jan 2015 15:33:57 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Paul Walmsley <paul@...an.com>
Cc:	linux-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org, Kumar Gala <galak@...eaurora.org>,
	Paul Walmsley <pwalmsley@...dia.com>,
	Thierry Reding <treding@...dia.com>,
	Allen Martin <amartin@...dia.com>,
	Stephen Warren <swarren@...dia.com>,
	Alexandre Courbot <gnurou@...il.com>
Subject: Re: [PATCH] soc: tegra: pmc: restrict compilation of suspend-related
 support to ARM

On Tue, Dec 09, 2014 at 10:36:50PM +0000, Paul Walmsley wrote:
> 
> Tegra SoCs with 64-bit ARM support don't currently support deep CPU
> low-power states in mainline Linux.  When this support is added in the
> future, it will probably look rather different from the existing
> 32-bit ARM support, since the ARM64 maintainers' strong preference is
> to use PSCI to implement it.
> 
> So, for the time being, prevent the CPU suspend-related code and data
> in the Tegra PMC driver from compiling on ARM64.
> 
> Signed-off-by: Paul Walmsley <paul@...an.com>
> Signed-off-by: Paul Walmsley <pwalmsley@...dia.com>
> Cc: Thierry Reding <treding@...dia.com>
> Cc: Allen Martin <amartin@...dia.com>
> Cc: Stephen Warren <swarren@...dia.com>
> Cc: Alexandre Courbot <gnurou@...il.com>
> ---
> Applies on next-20141209.
> Intended for v3.20.
> Boot-tested on Tegra124 Jetson TK1 on next-20141209.
> Also boot-tested on Tegra132 Norrin FFD on next-20141209 + some unrelated 
> patches.
> 
>  drivers/soc/tegra/pmc.c | 7 +++++--
>  include/soc/tegra/pm.h  | 2 +-
>  2 files changed, 6 insertions(+), 3 deletions(-)

On second thought, I decided to apply this as-is.

Thanks,
Thierry

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