From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sekhar Nori Date: Thu, 29 Aug 2013 10:39:44 +0000 Subject: Re: [Query] CPUFreq: Does these machines have separate clock domains for CPUs? Message-Id: <521F2220.5030403@ti.com> List-Id: References: <521F2112.5070501@ti.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org On Thursday 29 August 2013 04:00 PM, Viresh Kumar wrote: > On 29 August 2013 15:53, Sekhar Nori 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