linux-kernel - Re: [PATCH 4/5] ARM: trusted_foundations: implement do

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Message-ID: <52E02D8C.7090309@wwwdotorg.org>
Date:	Wed, 22 Jan 2014 13:43:56 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Alexandre Courbot <acourbot@...dia.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Russell King <linux@....linux.org.uk>
CC:	Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org, gnurou@...il.com
Subject: Re: [PATCH 4/5] ARM: trusted_foundations: implement do_idle()

On 01/21/2014 03:10 AM, Alexandre Courbot wrote:
> Support the do_idle() firmware call, which is necessary to properly
> support cpuidle.

> diff --git a/arch/arm/firmware/trusted_foundations.c b/arch/arm/firmware/trusted_foundations.c

> +#define TF_CPU_PM		 0xfffffffc
> +#define TF_CPU_PM_LP0		 0xffffffe3
> +#define TF_CPU_PM_LP1		 0xffffffe6
> +#define TF_CPU_PM_LP1_NO_MC_CLK	 0xffffffe5
> +#define TF_CPU_PM_LP2		 0xffffffe4
> +#define TF_CPU_PM_LP2_NOFLUSH_L2 0xffffffe7

Hmm. This must be Tegra-specific, not generic to any TF client, since
aren't the names of the suspend states (LP0, LP1, LP2) entirely specific
to Tegra?
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