From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Walleij Subject: Re: [PATCH V3 2/2] pinctrl: tegra: Add driver to configure voltage and power of io pads Date: Thu, 24 Nov 2016 15:11:04 +0100 Message-ID: References: <1479810013-29894-1-git-send-email-ldewangan@nvidia.com> <1479810013-29894-3-git-send-email-ldewangan@nvidia.com> <583580AD.60803@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from mail-qt0-f178.google.com ([209.85.216.178]:32961 "EHLO mail-qt0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965062AbcKXOLf (ORCPT ); Thu, 24 Nov 2016 09:11:35 -0500 Received: by mail-qt0-f178.google.com with SMTP id p16so41227138qta.0 for ; Thu, 24 Nov 2016 06:11:05 -0800 (PST) In-Reply-To: <583580AD.60803@nvidia.com> Sender: linux-gpio-owner@vger.kernel.org List-Id: linux-gpio@vger.kernel.org To: Laxman Dewangan , Mark Brown Cc: Rob Herring , Stephen Warren , "thierry.reding@gmail.com" , Mark Rutland , Alexandre Courbot , "linux-gpio@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Joe Perches , Jon Hunter On Wed, Nov 23, 2016 at 12:42 PM, Laxman Dewangan wrote: > Here, we need the regulator handle which can support the other regulator > APIs. > > In some of platforms, we do not use some of the io-pins and on this case, we > do not connect the IO rail supply for these pins. So this is like a hardware > optional. > > If the IO pins are used then it need to have the proper regulator handle. > Missing regulator handle on DT will be like that IO pads are not used. OK I buy that argument, unless Mark (Brown) has comments. Yours, Linus Walleij