From: f.fainelli@gmail.com (Florian Fainelli)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: brcmstb: update CPU power management sequence
Date: Mon, 12 Jan 2015 15:11:52 -0800 [thread overview]
Message-ID: <54B454B8.4000202@gmail.com> (raw)
In-Reply-To: <CADtm3G5ZaOsJ_pvY2ho0yYhbhbqtCwsPZfnEc0rwhCBC1ho16g@mail.gmail.com>
On 17/12/14 15:25, Gregory Fong wrote:
> On Tue, Dec 16, 2014 at 7:13 PM, Brian Norris
> <computersforpeace@gmail.com> wrote:
>> The automatic CPU power state machine for B15 CPUs does not work
>> reliably as-is. This patch implements a manual sequence in software to
>> replace it.
>>
>> This was tested successfully with over 10,000 hotplug cycles of
>> something like this:
>>
>> echo 0 > /sys/devices/system/cpu/cpu1/online
>> echo 1 > /sys/devices/system/cpu/cpu1/online
>>
>> whereas the existing sequence often locks up after a few hundred cycles.
>>
>> Fixes: 62639c2f5332 ("ARM: brcmstb: reintroduce SMP support")
>> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
>
> Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
>
Applied, and queued up for 3.20, thanks!
--
Florian
WARNING: multiple messages have this Message-ID (diff)
From: Florian Fainelli <f.fainelli@gmail.com>
To: Gregory Fong <gregory.0xf0@gmail.com>,
Brian Norris <computersforpeace@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] ARM: brcmstb: update CPU power management sequence
Date: Mon, 12 Jan 2015 15:11:52 -0800 [thread overview]
Message-ID: <54B454B8.4000202@gmail.com> (raw)
In-Reply-To: <CADtm3G5ZaOsJ_pvY2ho0yYhbhbqtCwsPZfnEc0rwhCBC1ho16g@mail.gmail.com>
On 17/12/14 15:25, Gregory Fong wrote:
> On Tue, Dec 16, 2014 at 7:13 PM, Brian Norris
> <computersforpeace@gmail.com> wrote:
>> The automatic CPU power state machine for B15 CPUs does not work
>> reliably as-is. This patch implements a manual sequence in software to
>> replace it.
>>
>> This was tested successfully with over 10,000 hotplug cycles of
>> something like this:
>>
>> echo 0 > /sys/devices/system/cpu/cpu1/online
>> echo 1 > /sys/devices/system/cpu/cpu1/online
>>
>> whereas the existing sequence often locks up after a few hundred cycles.
>>
>> Fixes: 62639c2f5332 ("ARM: brcmstb: reintroduce SMP support")
>> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
>
> Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
>
Applied, and queued up for 3.20, thanks!
--
Florian
next prev parent reply other threads:[~2015-01-12 23:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-17 3:13 [PATCH] ARM: brcmstb: update CPU power management sequence Brian Norris
2014-12-17 3:13 ` Brian Norris
2014-12-17 23:25 ` Gregory Fong
2014-12-17 23:25 ` Gregory Fong
2015-01-12 23:11 ` Florian Fainelli [this message]
2015-01-12 23:11 ` Florian Fainelli
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