From patchwork Thu Jul 14 10:12:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergiu Moga X-Patchwork-Id: 591172 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 A32EFC43334 for ; Thu, 14 Jul 2022 10:21:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238290AbiGNKVL (ORCPT ); Thu, 14 Jul 2022 06:21:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238280AbiGNKVJ (ORCPT ); Thu, 14 Jul 2022 06:21:09 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFDBE52FF9; Thu, 14 Jul 2022 03:21:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1657794068; x=1689330068; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=g49j0cb9hxZKdZ75BONB6nCv4q9hV2JY4Lk4I2Q6EZ0=; b=UEF9Djq1Ma/LZlty0OuGnRTeUJBfvtCMN4XOFB3OgfHQjS/Ir50MUyoh GOjLrv4N4NWjVisUkLpmZr1shdUwCoZB3hQhT2Jq7Ds3tyoU2rE6QWjaD d4f65l4N8WQExU6Z9K6Q+AnZ0wbjx0Wutkry3pDv0eVb6nsr4wHphXp4L IkfEBWs7cJlFGYQwev3U80ko/CF0FG4acJLDXMWAj+BJK6NTmMJCWSptT zhjLF8AW4I6FuwIjIqELn9f0KRjlIxRMdtLGVrdKHdKKLxjAUaBdiA+2E u3OHtR8DycViqyWp8ZXcp+OTdZ8LlKZSOd8PjdHSlS53/PBrS1R6x/ieo w==; X-IronPort-AV: E=Sophos;i="5.92,269,1650956400"; d="scan'208";a="167808613" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 14 Jul 2022 03:21:06 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Thu, 14 Jul 2022 03:21:05 -0700 Received: from ROB-ULT-M68701.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Thu, 14 Jul 2022 03:20:57 -0700 From: Sergiu Moga To: , , , , , , , CC: , , , , Sergiu Moga Subject: [PATCH] watchdog: dt-bindings: atmel,at91sam9-wdt: convert to json-schema Date: Thu, 14 Jul 2022 13:12:44 +0300 Message-ID: <20220714101242.103521-1-sergiu.moga@microchip.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Convert at91sam9 WDT binding for Atmel/Microchip SoCs to Device Tree Schema format. Signed-off-by: Sergiu Moga --- .../bindings/watchdog/atmel,at91sam9-wdt.yaml | 127 ++++++++++++++++++ .../bindings/watchdog/atmel-wdt.txt | 51 ------- 2 files changed, 127 insertions(+), 51 deletions(-) create mode 100644 Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml delete mode 100644 Documentation/devicetree/bindings/watchdog/atmel-wdt.txt diff --git a/Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml b/Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml new file mode 100644 index 000000000000..b3f7cbe913a5 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/atmel,at91sam9-wdt.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/atmel,at91sam9-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Atmel Watchdog Timers + +maintainers: + - Eugen Hristev + +allOf: + - $ref: watchdog.yaml# + - if: + properties: + atmel,reset-type: + enum: + - all + - proc + then: + properties: + atmel,watchdog-type: + const: hardware + +properties: + compatible: + const: atmel,at91sam9260-wdt + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + + atmel,max-heartbeat-sec: + description: + Should contain the maximum heartbeat value in seconds. This value + should be less or equal to 16. It is used to compute the WDV field. + maximum: 16 + + atmel,min-heartbeat-sec: + description: + Should contain the minimum heartbeat value in seconds. This value + must be smaller than the max-heartbeat-sec value. It is used to + compute the WDD field. + maximum: 16 + + atmel,watchdog-type: + $ref: /schemas/types.yaml#/definitions/string + description: | + Should be hardware or software. + oneOf: + - description: + Hardware watchdog uses the at91 watchdog reset. + const: hardware + - description: | + Software watchdog uses the watchdog interrupt + to trigger a software reset. + const: software + default: hardware + + atmel,reset-type: + $ref: /schemas/types.yaml#/definitions/string + description: | + Should be proc or all. This is valid only when using hardware watchdog. + oneOf: + - description: + Assert peripherals and processor reset signals. + const: all + - description: + Assert the processor reset signal. + const: proc + default: all + + atmel,disable: + $ref: /schemas/types.yaml#/definitions/flag + description: + Should be present if you want to stop the watchdog. + + atmel,idle-halt: + $ref: /schemas/types.yaml#/definitions/flag + description: | + Should be present if you want to stop the watchdog when + entering idle state. + CAUTION: This property should be used with care, it actually makes the + watchdog not counting when the CPU is in idle state, therefore the + watchdog reset time depends on mean CPU usage and will not reset at all + if the CPU stops working while it is in idle state, which is probably + not what you want. + + atmel,dbg-halt: + $ref: /schemas/types.yaml#/definitions/flag + description: | + Should be present if you want to stop the watchdog when + entering debug state. + +required: + - compatible + - reg + - clocks + +dependencies: + atmel,reset-type: ['atmel,watchdog-type'] + +unevaluatedProperties: false + +examples: + - | + #include + + watchdog@fffffd40 { + compatible = "atmel,at91sam9260-wdt"; + reg = <0xfffffd40 0x10>; + interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>; + clocks = <&clk32k>; + timeout-sec = <15>; + atmel,watchdog-type = "hardware"; + atmel,reset-type = "all"; + atmel,dbg-halt; + atmel,idle-halt; + atmel,max-heartbeat-sec = <16>; + atmel,min-heartbeat-sec = <0>; + }; diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt deleted file mode 100644 index 711a880b3d3b..000000000000 --- a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt +++ /dev/null @@ -1,51 +0,0 @@ -* Atmel Watchdog Timers - -** at91sam9-wdt - -Required properties: -- compatible: must be "atmel,at91sam9260-wdt". -- reg: physical base address of the controller and length of memory mapped - region. -- clocks: phandle to input clock. - -Optional properties: -- timeout-sec: contains the watchdog timeout in seconds. -- interrupts : Should contain WDT interrupt. -- atmel,max-heartbeat-sec : Should contain the maximum heartbeat value in - seconds. This value should be less or equal to 16. It is used to - compute the WDV field. -- atmel,min-heartbeat-sec : Should contain the minimum heartbeat value in - seconds. This value must be smaller than the max-heartbeat-sec value. - It is used to compute the WDD field. -- atmel,watchdog-type : Should be "hardware" or "software". Hardware watchdog - use the at91 watchdog reset. Software watchdog use the watchdog - interrupt to trigger a software reset. -- atmel,reset-type : Should be "proc" or "all". - "all" : assert peripherals and processor reset signals - "proc" : assert the processor reset signal - This is valid only when using "hardware" watchdog. -- atmel,disable : Should be present if you want to disable the watchdog. -- atmel,idle-halt : Should be present if you want to stop the watchdog when - entering idle state. - CAUTION: This property should be used with care, it actually makes the - watchdog not counting when the CPU is in idle state, therefore the - watchdog reset time depends on mean CPU usage and will not reset at all - if the CPU stop working while it is in idle state, which is probably - not what you want. -- atmel,dbg-halt : Should be present if you want to stop the watchdog when - entering debug state. - -Example: - watchdog@fffffd40 { - compatible = "atmel,at91sam9260-wdt"; - reg = <0xfffffd40 0x10>; - interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>; - clocks = <&clk32k>; - timeout-sec = <15>; - atmel,watchdog-type = "hardware"; - atmel,reset-type = "all"; - atmel,dbg-halt; - atmel,idle-halt; - atmel,max-heartbeat-sec = <16>; - atmel,min-heartbeat-sec = <0>; - };