From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Peter De Schrijver
<pdeschrijver-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Colin Cross <ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH V4 0/5] ARM: tegra20: cpuidle: add power-down state
Date: Wed, 23 Jan 2013 10:22:27 -0700 [thread overview]
Message-ID: <51001C53.1030609@wwwdotorg.org> (raw)
In-Reply-To: <1358323807-30157-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
On 01/16/2013 01:10 AM, Joseph Lo wrote:
> This adds a "powered-down" state in cpuidle for Tegra20. It requires power
> gating both CPU cores. When the CPU1 requests to enter "powered-down"
> state, it saves its own state and then enters WFI. When the CPU0 requests
> the same state, it attempts to put the CPU1 into reset to prevent it from
> waking up. Then power down both CPUs together and turn off the CPU rail.
>
> If the CPU1 be woken up before CPU0 entering powered-down state, then it
> needs to restore it's CPU state and waits for next chance.
I have applied this series to Tegra's for-3.9/soc branch.
WARNING: multiple messages have this Message-ID (diff)
From: swarren@wwwdotorg.org (Stephen Warren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V4 0/5] ARM: tegra20: cpuidle: add power-down state
Date: Wed, 23 Jan 2013 10:22:27 -0700 [thread overview]
Message-ID: <51001C53.1030609@wwwdotorg.org> (raw)
In-Reply-To: <1358323807-30157-1-git-send-email-josephl@nvidia.com>
On 01/16/2013 01:10 AM, Joseph Lo wrote:
> This adds a "powered-down" state in cpuidle for Tegra20. It requires power
> gating both CPU cores. When the CPU1 requests to enter "powered-down"
> state, it saves its own state and then enters WFI. When the CPU0 requests
> the same state, it attempts to put the CPU1 into reset to prevent it from
> waking up. Then power down both CPUs together and turn off the CPU rail.
>
> If the CPU1 be woken up before CPU0 entering powered-down state, then it
> needs to restore it's CPU state and waits for next chance.
I have applied this series to Tegra's for-3.9/soc branch.
next prev parent reply other threads:[~2013-01-23 17:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-16 8:10 [PATCH V4 0/5] ARM: tegra20: cpuidle: add power-down state Joseph Lo
2013-01-16 8:10 ` Joseph Lo
[not found] ` <1358323807-30157-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-01-23 17:22 ` Stephen Warren [this message]
2013-01-23 17:22 ` Stephen Warren
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