Message-ID: <521F2220.5030403@ti.com>
Date: Thu, 29 Aug 2013 15:57:44 +0530
From: Sekhar Nori <nsekhar@ti.com>
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To: Viresh Kumar <viresh.kumar@linaro.org>
CC: "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
        "cpufreq@vger.kernel.org" <cpufreq@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        David Miller <davem@davemloft.net>, Eric Miao <eric.y.miao@gmail.com>,
        Jesper Nilsson <jesper.nilsson@axis.com>,
        John Crispin <blogic@openwrt.org>, <linux-cris-kernel@axis.com>,
        <linux-sh@vger.kernel.org>, Mikael Starvik <starvik@axis.com>,
        Paul Mundt <lethal@linux-sh.org>, <sparclinux@vger.kernel.org>,
        Miao Steven <realmz6@gmail.com>, Dave Jones <davej@redhat.com>
Subject: Re: [Query] CPUFreq: Does these machines have separate clock domains
 for CPUs?
References: <CAKohponWn-RN7-6sdhghd6RGCOd357G+TKLsxHfqnSCuMD7xxw@mail.gmail.com> <521F2112.5070501@ti.com> <CAKohponHDZB37UsacYpmaJPb2-P3b_CJ51e7o=X+D3M68GcdEQ@mail.gmail.com>
In-Reply-To: <CAKohponHDZB37UsacYpmaJPb2-P3b_CJ51e7o=X+D3M68GcdEQ@mail.gmail.com>
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On Thursday 29 August 2013 04:00 PM, Viresh Kumar wrote:
> On 29 August 2013 15:53, Sekhar Nori <nsekhar@ti.com> wrote:
>> On DaVinci (DA850), there is an async domain available to keep some
>> peripheral clocks insulated from cpu frequency changes. But there are a
>> bunch of other clocks which do get affected by CPU frequency change
>> (they need to run at a fixed ratio to CPU frequency).
> 
> My question wasn't about how peripherals are getting clocks.. but how
> CPUs are getting them..
> 
> Does all CPUs share clock line in Davinci? i.e. if we change freq of one
> cpu then freq of other one also gets changed?
> 
> Or they are capable of running at different frequencies?

I get it now. All DaVinci devices are UP only.

Thanks,
Sekhar
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