From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sudeep Holla Subject: Re: [Discussion] Performance levels of power domains Date: Fri, 28 Oct 2016 09:52:51 +0100 Message-ID: References: <20161026111642.GM9162@vireshk-i7> <20161028002202.GM26139@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from foss.arm.com ([217.140.101.70]:54018 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753081AbcJ1Iwz (ORCPT ); Fri, 28 Oct 2016 04:52:55 -0400 In-Reply-To: <20161028002202.GM26139@codeaurora.org> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Stephen Boyd Cc: Sudeep Holla , Viresh Kumar , "linux-pm@vger.kernel.org" , Lists linaro-kernel , Michael Turquette , "Rafael J. Wysocki" , Mark Brown , "Nayak, Rajendra" , Georgi Djakov , Bjorn Andersson On 28/10/16 01:22, Stephen Boyd wrote: > On 10/26, Sudeep Holla wrote: >> >> >> On 26/10/16 12:16, Viresh Kumar wrote: >>> On 26-10-16, 12:09, Sudeep Holla wrote: >> >> [...] >> >>>> I am mainly interested as there are efforts to standardize these >>>> communication with M3 and there's WIP protocol development[1]. It would >>>> be good to see if this user-case is also considered. >>> >>> What do you mean by that ? >> >> Basically I wanted to know more details so that such system are also >> considered(I agree it may not have any impact on the protocol at all, >> but still good to consider them) when designing this new SCMI protocol. >> > > There are a couple different wire protocols used to communicate > with the RPM on these platforms. The first one is at > drivers/mfd/qcom_rpm.c, and the second one is at > drivers/soc/qcom/smd-rpm.c. Bjorn upstreamed these drivers based > on the codeaurora sources. > Thanks for information Stephen, I will have a look. -- Regards, Sudeep