From patchwork Wed Jan 10 01:58:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 857875 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=codeaurora.org header.i=@codeaurora.org header.b="CtGCa2hJ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="g5mDumR8"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zGXHP5k4Tz9t3p for ; Wed, 10 Jan 2018 12:58:57 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932350AbeAJB6z (ORCPT ); Tue, 9 Jan 2018 20:58:55 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:42256 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933128AbeAJB6v (ORCPT ); Tue, 9 Jan 2018 20:58:51 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 040C860BE8; Wed, 10 Jan 2018 01:58:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1515549531; bh=XBTOAYzzaQyslh69FciUsMtxkZqRRLreBAnDXJMHia8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CtGCa2hJ6hXUpePEZoQb1P6Y0/1EBwi2yta7Z8/80nR0WVKlPVOzL+yY0QHW3/HKm nrlPQqJ0JJNaOX6Mn7xaJIewlN1QKo5zEGH+lkh+tsQHCdTmVWfW57jsPjg/9RIxFT PTshTusQs04dC1ZwxShnF9j/FMvXrIL86RlILAwA= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED, T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from sboyd-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sboyd@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 4224B60BE6; Wed, 10 Jan 2018 01:58:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1515549530; bh=XBTOAYzzaQyslh69FciUsMtxkZqRRLreBAnDXJMHia8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g5mDumR81obtMci+5O14jkDh7HDmNFbVc00zNWNmhC0gePbDHVKnz7eiiKbYRNq7v h71szbLUFudyDRb0/tSjgA6uMyfAzpokuNwVj4dq9mWk9s7bprrIY7MSvCdcgULesZ ILsoOyGondH2qRx1OSDsV2Neb+ORmI/AoTqJ7axE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4224B60BE6 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=sboyd@codeaurora.org From: Stephen Boyd To: Linus Walleij Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Timur Tabi , Andy Shevchenko , Bjorn Andersson , linux-gpio@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH 2/3] dt-bindings: pinctrl: Add a ngpios-ranges property Date: Tue, 9 Jan 2018 17:58:47 -0800 Message-Id: <20180110015848.11480-3-sboyd@codeaurora.org> X-Mailer: git-send-email 2.15.0.374.g5f9953d2c365 In-Reply-To: <20180110015848.11480-1-sboyd@codeaurora.org> References: <20180110015848.11480-1-sboyd@codeaurora.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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: Signed-off-by: Stephen Boyd --- I stuck this inside msm8996, but maybe it can go somewhere more generic? Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt index aaf01e929eea..8354ab270486 100644 --- a/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt +++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8996-pinctrl.txt @@ -40,6 +40,12 @@ MSM8996 platform. Definition: must be 2. Specifying the pin number and flags, as defined in +- ngpios-ranges: + Usage: optional + Value type: + Definition: Tuples of GPIO ranges (base, size) indicating + GPIOs available for use. + Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for a general description of GPIO and interrupt bindings.