Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965739AbcKXOLz (ORCPT ); Thu, 24 Nov 2016 09:11:55 -0500 Received: from mail-qt0-f182.google.com ([209.85.216.182]:36565 "EHLO mail-qt0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965489AbcKXOLf (ORCPT ); Thu, 24 Nov 2016 09:11:35 -0500 MIME-Version: 1.0 In-Reply-To: <583580AD.60803@nvidia.com> References: <1479810013-29894-1-git-send-email-ldewangan@nvidia.com> <1479810013-29894-3-git-send-email-ldewangan@nvidia.com> <583580AD.60803@nvidia.com> From: Linus Walleij Date: Thu, 24 Nov 2016 15:11:04 +0100 Message-ID: Subject: Re: [PATCH V3 2/2] pinctrl: tegra: Add driver to configure voltage and power of io pads 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 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 568 Lines: 16 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