From patchwork Fri May 6 14:05:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andre Przywara X-Patchwork-Id: 570301 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38E56C433FE for ; Fri, 6 May 2022 14:05:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1441988AbiEFOJc (ORCPT ); Fri, 6 May 2022 10:09:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1441991AbiEFOJb (ORCPT ); Fri, 6 May 2022 10:09:31 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 4EA606128A for ; Fri, 6 May 2022 07:05:48 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2192414BF; Fri, 6 May 2022 07:05:48 -0700 (PDT) Received: from donnerap.arm.com (donnerap.cambridge.arm.com [10.1.197.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id F16AA3F885; Fri, 6 May 2022 07:05:46 -0700 (PDT) From: Andre Przywara To: Rob Herring , Krzysztof Kozlowski Cc: Liviu Dudau , Robin Murphy , devicetree@vger.kernel.org, Will Deacon , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 06/11] dt-bindings: arm: convert vexpress-sysregs to DT schema Date: Fri, 6 May 2022 15:05:28 +0100 Message-Id: <20220506140533.3566431-7-andre.przywara@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220506140533.3566431-1-andre.przywara@arm.com> References: <20220506140533.3566431-1-andre.przywara@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The Arm Versatile Express system control register block provides GPIO functionality to some devices and is also used for board identification. Extract the first half of the informal vexpress-sysreg.txt binding and make it proper DT schema compliant. Signed-off-by: Andre Przywara --- .../bindings/arm/vexpress-sysreg.yaml | 90 +++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml diff --git a/Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml b/Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml new file mode 100644 index 0000000000000..b5e26e41f88c8 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/vexpress-sysreg.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM Versatile Express system registers bindings + +maintainers: + - Andre Przywara + +description: + This is a system control registers block, providing multiple low level + platform functions like board detection and identification, software + interrupt generation, MMC and NOR Flash control, etc. + +properties: + compatible: + const: arm,vexpress-sysreg + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + ranges: true + +additionalProperties: false + +patternProperties: + '^gpio@[0-9a-f]+$': + type: object + additionalProperties: false + description: + GPIO children + + properties: + compatible: + enum: + - arm,vexpress-sysreg,sys_led + - arm,vexpress-sysreg,sys_mci + - arm,vexpress-sysreg,sys_flash + + gpio-controller: true + + "#gpio-cells": + const: 2 + description: | + The first cell is the function number: + for sys_led : 0..7 = LED 0..7 + for sys_mci : 0 = MMC CARDIN, 1 = MMC WPROT + for sys_flash : 0 = NOR FLASH WPn + The second cell can take standard GPIO flags. + + reg: + maxItems: 1 + + required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +required: + - compatible + - "#address-cells" + - "#size-cells" + +examples: + - | + sysreg@0 { + compatible = "arm,vexpress-sysreg"; + reg = <0x00000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0 0x1000>; + + v2m_led_gpios: gpio@8 { + compatible = "arm,vexpress-sysreg,sys_led"; + reg = <0x008 4>; + gpio-controller; + #gpio-cells = <2>; + }; + }; + +...