From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752365AbeCZW0W (ORCPT ); Mon, 26 Mar 2018 18:26:22 -0400 Received: from mail-oi0-f65.google.com ([209.85.218.65]:35946 "EHLO mail-oi0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752495AbeCZWZN (ORCPT ); Mon, 26 Mar 2018 18:25:13 -0400 X-Google-Smtp-Source: AG47ELvnrjA334/F7+WU7qP46cQbVDxftJZVk4NGObNPA4Bj0s8DtziSaDQm2Di03wO1+AIj3lk16Q== Date: Mon, 26 Mar 2018 17:25:11 -0500 From: Rob Herring To: Stephen Boyd Cc: Linus Walleij , Stephen Boyd , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, Timur Tabi , Bjorn Andersson , Grant Likely , linux-gpio@vger.kernel.org, Andy Shevchenko Subject: Re: [PATCH v4 1/5] dt-bindings: gpio: Add a gpio-reserved-ranges property Message-ID: <20180326222511.hc6tzwb7n3svum2a@rob-hp-laptop> References: <20180323163453.96495-1-swboyd@chromium.org> <20180323163453.96495-2-swboyd@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180323163453.96495-2-swboyd@chromium.org> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 23, 2018 at 09:34:49AM -0700, Stephen Boyd wrote: > From: Stephen Boyd > > Some qcom platforms make some GPIOs or pins unavailable for use > by non-secure operating systems, and thus reading or writing the > registers for those pins will cause access control issues. > Introduce a DT property to describe the set of GPIOs that are > available for use so that higher level OSes are able to know what > pins to avoid reading/writing. > > Cc: Grant Likely > Cc: > Signed-off-by: Stephen Boyd > Signed-off-by: Stephen Boyd > --- > Documentation/devicetree/bindings/gpio/gpio.txt | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) Reviewed-by: Rob Herring