From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Turquette Subject: Re: [PATCH V4 3/3] OPP: Add 'opp-next' in operating-points-v2 bindings Date: Tue, 12 May 2015 14:47:14 -0700 Message-ID: <20150512214714.16410.59831@quantum> References: <1ee98ae5b45083e681c7f530e0ae9195e5636119.1430394884.git.viresh.kumar@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Return-path: Received: from mail-ie0-f178.google.com ([209.85.223.178]:33366 "EHLO mail-ie0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933135AbbELVr1 convert rfc822-to-8bit (ORCPT ); Tue, 12 May 2015 17:47:27 -0400 Received: by iebgx4 with SMTP id gx4so14770792ieb.0 for ; Tue, 12 May 2015 14:47:26 -0700 (PDT) In-Reply-To: <1ee98ae5b45083e681c7f530e0ae9195e5636119.1430394884.git.viresh.kumar@linaro.org> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Rafael Wysocki , rob.herring@linaro.org, arnd.bergmann@linaro.org, nm@ti.com, broonie@kernel.org, sboyd@codeaurora.org Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org, grant.likely@linaro.org, olof@lixom.net, Sudeep.Holla@arm.com, devicetree@vger.kernel.org, viswanath.puttagunta@linaro.org, l.stach@pengutronix.de, thomas.petazzoni@free-electrons.com, linux-arm-kernel@lists.infradead.org, ta.omasab@gmail.com, kesavan.abhilash@gmail.com, khilman@linaro.org, santosh.shilimkar@oracle.com, Viresh Kumar Quoting Viresh Kumar (2015-04-30 05:08:01) > Many platforms require to switch to a intermediate frequency before > switching to a final frequency. Or they can switch to only particular > OPPs from any OPP. > > For these add another property in OPP-v2, 'opp-next'. > > Refer to the bindings for more details. > > Signed-off-by: Viresh Kumar We should never encode any aspect of the dvfs transition sequence into DT. Raw data such as clock frequency or supply voltage might be OK, but the programming steps should be left entirely to drivers. So this patch gets a NAK from me. Regards, Mike