From patchwork Wed Nov 2 19:20:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 13028911 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 976EFC433FE for ; Wed, 2 Nov 2022 19:20:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230514AbiKBTUn (ORCPT ); Wed, 2 Nov 2022 15:20:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230504AbiKBTUl (ORCPT ); Wed, 2 Nov 2022 15:20:41 -0400 Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C778E0A2 for ; Wed, 2 Nov 2022 12:20:34 -0700 (PDT) Received: from tr.lan (ip-86-49-120-218.bb.vodafone.cz [86.49.120.218]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id DB62284F39; Wed, 2 Nov 2022 20:20:31 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1667416832; bh=KQ7SPCMB51dJ/SDQrgfQd7I0irSU0npFOfzmrtjSj9s=; h=From:To:Cc:Subject:Date:From; b=iaB0YL8UUzAWpXHfDvF0IFR3licJ9CA9TGpI2firDeK9DkKPlKY2pkvbssoIOJYun +QjdoG3DxjGCrvOztAks5RWHc/laD8VuRLj369axzl8vkSJkAyeYeYsHzYpzUkj8LN 7a7vTgNXof/vl0eeeXfooWVOPdqaGDUf66/mvW/ymnwQ/XA+ZA71gsu3RDdsYo4A6Q en7d3mChqCTj7IGg0mB5PdeRmJUKtMOfnCsAtffYXvI+diVHuZTU49p904WGO2q45N pnjPh9H0r0OPQwFUCTNpRuhB3Fbw+rl44zgiYKSvi9VP2P4Ml7+YsBKOEChRiMwjtn ji1QZKU4h3Irw== From: Marek Vasut To: linux-watchdog@vger.kernel.org Cc: Marek Vasut , Guenter Roeck , Rob Herring , Wim Van Sebroeck Subject: [PATCH] dt-bindings: watchdog: gpio: Convert bindings to YAML Date: Wed, 2 Nov 2022 20:20:29 +0100 Message-Id: <20221102192029.120917-1-marex@denx.de> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Convert the gpio-wdt bindings from text to YAML ones, to permit DT validation. Signed-off-by: Marek Vasut --- Cc: Guenter Roeck Cc: Rob Herring Cc: Wim Van Sebroeck Cc: linux-watchdog@vger.kernel.org To: devicetree@vger.kernel.org --- NOTE: The Maintainer entry should likely be changed, although it seems like this driver and its matching bindings are now unmaintained. --- .../devicetree/bindings/watchdog/gpio-wdt.txt | 28 ------------ .../bindings/watchdog/linux,wdt-gpio.yaml | 44 +++++++++++++++++++ 2 files changed, 44 insertions(+), 28 deletions(-) delete mode 100644 Documentation/devicetree/bindings/watchdog/gpio-wdt.txt create mode 100644 Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml diff --git a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt b/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt deleted file mode 100644 index 198794963786b..0000000000000 --- a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt +++ /dev/null @@ -1,28 +0,0 @@ -* GPIO-controlled Watchdog - -Required Properties: -- compatible: Should contain "linux,wdt-gpio". -- gpios: From common gpio binding; gpio connection to WDT reset pin. -- hw_algo: The algorithm used by the driver. Should be one of the - following values: - - toggle: Either a high-to-low or a low-to-high transition clears - the WDT counter. The watchdog timer is disabled when GPIO is - left floating or connected to a three-state buffer. - - level: Low or high level starts counting WDT timeout, - the opposite level disables the WDT. Active level is determined - by the GPIO flags. -- hw_margin_ms: Maximum time to reset watchdog circuit (milliseconds). - -Optional Properties: -- always-running: If the watchdog timer cannot be disabled, add this flag to - have the driver keep toggling the signal without a client. It will only cease - to toggle the signal when the device is open and the timeout elapsed. - -Example: - watchdog: watchdog { - /* ADM706 */ - compatible = "linux,wdt-gpio"; - gpios = <&gpio3 9 GPIO_ACTIVE_LOW>; - hw_algo = "toggle"; - hw_margin_ms = <1600>; - }; diff --git a/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml new file mode 100644 index 0000000000000..6b014d60c9471 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/linux,wdt-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO-controlled Watchdog + +maintainers: + - Marek Vasut + +properties: + compatible: + const: linux,wdt-gpio + + gpios: + description: gpio connection to WDT reset pin + maxItems: 1 + + hw_algo: + description: The algorithm used by the driver. + enum: [ level, toggle ] + + hw_margin_ms: + description: Maximum time to reset watchdog circuit (milliseconds). + $ref: /schemas/types.yaml#/definitions/uint32 + +required: + - compatible + +allOf: + - $ref: "watchdog.yaml#" + +additionalProperties: false + +examples: + - | + #include + watchdog { + compatible = "linux,wdt-gpio"; + gpios = <&gpio3 9 GPIO_ACTIVE_LOW>; + hw_algo = "toggle"; + hw_margin_ms = <1600>; + };