From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: Re: [PATCH 4/4] regulator: qcom: Rework to single platform device Date: Tue, 03 Mar 2015 16:01:43 -0800 Message-ID: <54F64B67.9060608@codeaurora.org> References: <1425356740-26285-1-git-send-email-bjorn.andersson@sonymobile.com> <1425356740-26285-5-git-send-email-bjorn.andersson@sonymobile.com> <54F630FF.60109@codeaurora.org> <20150303223235.GK26334@sonymobile.com> <20150303235209.GG21293@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150303235209.GG21293-GFdadSzt00ze9xe1eoZjHA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mark Brown , Bjorn Andersson Cc: Ian Campbell , Kumar Gala , Lee Jones , Liam Girdwood , Mark Rutland , Pawel Moll , Rob Herring , Andy Gross , Chanwoo Choi , Krzysztof Kozlowski , Srinivas Kandagatla , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: devicetree@vger.kernel.org On 03/03/15 15:52, Mark Brown wrote: > On Tue, Mar 03, 2015 at 02:32:35PM -0800, Bjorn Andersson wrote: >> On Tue 03 Mar 14:09 PST 2015, Stephen Boyd wrote: >>> How does this work for the case where we may not want to add all the >>> regulators that a PMIC supports. I'm mostly thinking about the case >>> where we want to use the pm8xxx-regulator driver for a few regulators >>> and so we omit them from the DT for the RPM regulators. >> An empty or non-existing regulator of_node will still be registered, but >> without REGULATOR_CHANGE_STATUS nor REGULATOR_CHANGE_VOLTAGE; so any >> operation on this regulator will fail with an -EPERM. > ...but of course we'd never try any operations on it anyway as there > would be no consumers. Yes sounds fine. The only concern is that we're probably wasting memory with things that won't ever "match" something in DT. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html