From mboxrd@z Thu Jan 1 00:00:00 1970 From: Viresh Kumar Subject: Re: [PATCH V4 1/9] PM / OPP: Allow OPP table to be used for power-domains Date: Wed, 19 Apr 2017 17:17:40 +0530 Message-ID: <20170419114740.GD5436@vireshk-i7> References: <0a7146f9-72f1-317c-3aab-770a72462968@arm.com> <20170413053736.GM5910@vireshk-i7> <3adbef6a-7b43-528f-e88f-c2121d30a5d3@arm.com> <20170417052758.GF28191@vireshk-i7> <95aa4b97-4e1a-13bb-f4d8-982b778012ba@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <95aa4b97-4e1a-13bb-f4d8-982b778012ba@arm.com> Sender: linux-kernel-owner@vger.kernel.org To: Sudeep Holla Cc: Rafael Wysocki , ulf.hansson@linaro.org, Kevin Hilman , Viresh Kumar , Nishanth Menon , Stephen Boyd , linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Vincent Guittot , robh+dt@kernel.org, lina.iyer@linaro.org, rnayak@codeaurora.org, devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org On 18-04-17, 17:01, Sudeep Holla wrote: > Understood. I would incline towards reusing regulators we that's what is It can be just a regulator, but it can be anything else as well. That entity may have its own clock/volt/current tunables, etc. > changed behind the scene. Calling this operating performance point > is misleading and doesn't align well with existing specs/features. Yeah, but there are no voltage levels available here and that doesn't fit as a regulator then. > Understood. We have exactly same thing with SCPI but it controls both > frequency and voltage referred as operating points. In general, this OPP > terminology is used in SCPI/ACPI/SCMI specifications as both frequency > and voltage control. I am bit worried that this binding might introduce > confusions on the definitions. But it can be reworded/renamed easily if > required. Yeah, so far we have been looking at OPPs as freq-voltage pairs ONLY and that is changing. I am not sure if it going in the wrong direction really. Without frequency also it is an operating point for the domain. Isn't it? -- viresh