From patchwork Mon Nov 7 16:03:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 622410 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 6CA4BC4332F for ; Mon, 7 Nov 2022 16:03:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231450AbiKGQDz (ORCPT ); Mon, 7 Nov 2022 11:03:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56002 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230434AbiKGQDz (ORCPT ); Mon, 7 Nov 2022 11:03:55 -0500 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 565E0646A; Mon, 7 Nov 2022 08:03:53 -0800 (PST) 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 DF13E80705; Mon, 7 Nov 2022 17:03:50 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1667837031; bh=npYaDFsNI6WNDngxPTaMW7qxIj6XNWcAhE4z8/9Z3ns=; h=From:To:Cc:Subject:Date:From; b=NoelKcAy/1BxHzRIlRmb3IzlavJyBdFLhfv3UnQ+X9fL2sIpPJ/AeuGrBmG6akLu1 Uo/Mf10Veby7mmr2mPBg8renR3LQ+HMzN0/nBkyZuyeWsC5afG6tWi4qaBPu2bAyA1 IEXuRR8jTUPeONfd9FmfHHD0l2h9WwTBn0OytW7M0Szn7L1igA5AF7Gt8Xyfr4bjMl A3fPu+K0u+Sn9VrEAwMFOu90lYqbSUN5CLZFxzStiLBBMaBzVgQ7JfHJ/YQa8WbwU5 Fbi8mrt82roKMVorXRXqEFVRDyWNeu+5OTHrgSNy7ooyyOJeRQt5P1RxL6UOIuAU9l G/1TpcFjaw55g== From: Marek Vasut To: devicetree@vger.kernel.org Cc: Marek Vasut , Rob Herring , Guenter Roeck , Krzysztof Kozlowski , Rob Herring , Wim Van Sebroeck , linux-watchdog@vger.kernel.org Subject: [PATCH v3] dt-bindings: watchdog: gpio: Convert bindings to YAML Date: Mon, 7 Nov 2022 17:03:38 +0100 Message-Id: <20221107160338.27910-1-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: devicetree@vger.kernel.org Convert the gpio-wdt bindings from text to YAML ones, to permit DT validation. Reviewed-by: Rob Herring Signed-off-by: Marek Vasut --- Cc: Guenter Roeck Cc: Krzysztof Kozlowski Cc: Rob Herring Cc: Wim Van Sebroeck Cc: linux-watchdog@vger.kernel.org To: devicetree@vger.kernel.org --- V2: - Add missing required: properties - Drop quotes around ref: referenced schema file name V3: - Add Guenter as maintainer of the bindings - Add RB from Rob --- .../devicetree/bindings/watchdog/gpio-wdt.txt | 28 ----------- .../bindings/watchdog/linux,wdt-gpio.yaml | 47 +++++++++++++++++++ 2 files changed, 47 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..c729c96a5dc75 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml @@ -0,0 +1,47 @@ +# 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: + - Guenter Roeck + +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 + - gpios + - hw_algo + - hw_margin_ms + +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>; + };