From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Date: Tue, 17 Jul 2012 14:37:54 +0000 Subject: Re: Device tree binding for DVFS table Message-Id: <20120717143754.GB3107@sirena.org.uk> List-Id: References: <4FFD77FE.8050206@nvidia.com> <4FFD87BD.2030206@gmail.com> <4FFE4DD0.7020407@nvidia.com> <50035582.9070308@gmail.com> <50055C83.7060700@nvidia.com> <20120717132032.GD27595@sirena.org.uk> <50057514.5070501@nvidia.com> In-Reply-To: <50057514.5070501@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org On Tue, Jul 17, 2012 at 07:52:12PM +0530, Prashant Gaikwad wrote: > >What happens if there's more than one supply that needs to be varied? > Each rail's dvfs-table will have OPP nodes defined for different > voltages and each OPP node contains frequency for all clocks > affecting that rail. Right, but some systems have operating points which cover a combination of voltages and frequencies in one operating point. Your binding seems to define operating points per supply with no tie in between supplies. From mboxrd@z Thu Jan 1 00:00:00 1970 From: broonie@opensource.wolfsonmicro.com (Mark Brown) Date: Tue, 17 Jul 2012 15:37:54 +0100 Subject: Device tree binding for DVFS table In-Reply-To: <50057514.5070501@nvidia.com> References: <4FFD77FE.8050206@nvidia.com> <4FFD87BD.2030206@gmail.com> <4FFE4DD0.7020407@nvidia.com> <50035582.9070308@gmail.com> <50055C83.7060700@nvidia.com> <20120717132032.GD27595@sirena.org.uk> <50057514.5070501@nvidia.com> Message-ID: <20120717143754.GB3107@sirena.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jul 17, 2012 at 07:52:12PM +0530, Prashant Gaikwad wrote: > >What happens if there's more than one supply that needs to be varied? > Each rail's dvfs-table will have OPP nodes defined for different > voltages and each OPP node contains frequency for all clocks > affecting that rail. Right, but some systems have operating points which cover a combination of voltages and frequencies in one operating point. Your binding seems to define operating points per supply with no tie in between supplies.