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: 12917677 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 81849C433EF for ; Thu, 14 Jul 2022 10:22:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=yWIcq3HF50OdBvUQlPfw/0CXKMpn7n1oSPIkziytPNY=; b=3P9dOlrzygGlv0 9FnjCNdcb96bht2XW+PzKqBH33dWtOHv/Ksx+apbyiVm23n48zpxo4h7oWjdZQLohQnvBNi9RP0qK 9iZM/vQmyJmdyfl7SqHM+rIlk255JSyy/VZ9ahcKeAsf5H2apmnVvFUOhfxCBgQK+yvnPRop3CsAC 0xh7ZHS3YYvbzDGGLRrCLiz3X8nbCfjlnP/Ve5zJUN5jWG8z1lDkLEmeNc2yPWvs3Zv1XGNLK2K2c YujeE5v20cQvilq684meXz67qSSuL+Ol0AXxIhInWs4+d6yYH6tiTCGV4l1fXiSjEzBvQ1T5vJtlc uiQwrvZHWIqiPRSdrfIw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oBvyG-00DIZX-14; Thu, 14 Jul 2022 10:21:24 +0000 Received: from esa.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oBvy8-00DITx-Ow for linux-arm-kernel@lists.infradead.org; Thu, 14 Jul 2022 10:21:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1657794076; x=1689330076; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=g49j0cb9hxZKdZ75BONB6nCv4q9hV2JY4Lk4I2Q6EZ0=; b=kByf1xW+KHO2ExW62sYZkogsf5ubEYSb46Ekcv7Q1Ev6eeqf5X9UtJwm baGg7NscvdNDpSAD0xdZQlOXuFTRc5/SH53DUBfmoYIvVnAbk+Qhn533n eBZS51grgP6fT1FPdygxT2H+gaR9Kp8dx6kmu7cChXio3aZX0ke2eNbzK dVJupp3QnN2/Fx5B4ov1fxNFjmqTG0BrEFy8ys69VrcIthh7l6ypiOstY 9SHg8cfXZ+HlXVbNs8YrQoBlmR7vjS5MzNq5t+l23sQxQluNT0Op+aM+W E1wJH1xT/LQUn7Hiosm47OBAksAc4jmsEF9D+dzlDWIAo4SqXbx4XlEjD A==; 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220714_032116_897059_3A5A5F55 X-CRM114-Status: GOOD ( 19.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Convert at91sam9 WDT binding for Atmel/Microchip SoCs to Device Tree Schema format. Signed-off-by: Sergiu Moga Reviewed-by: Krzysztof Kozlowski --- .../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>; - };