From patchwork Tue Mar 14 13:24:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 13174444 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 785C6C6FD1D for ; Tue, 14 Mar 2023 13:25:27 +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:References:In-Reply-To: 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: List-Owner; bh=4t3h1wzUR1WoR0dBwbPKJ1K2uqtDmNt0/547R7e6/ng=; b=fnpte7Vhg0IgII QeaNtOjFOhm6o3A6DwEr9T0UH+yKHwp5UYuOjc20Cg81RKS4U3bJroR9Qii/cmCYxTfY/2Ln9iPp7 FuIa4NBwHrh5qDFuoGPXCdjIsKFpdPcd9cGmI3phiwCAWtQsPApizmd5HVZns4kU1Axv/EHhWjWxy DTXRCj3FtwDyF0tO2x2uS4Q8t0p0RWsKEREXpn4Ss67XE+7uGRxxxmNgDs3fS0aMdXZfkLLF/2ivk yitTClulox/96gIpe0iINoznM0Uw9kGolIJGJ3XtI+XF6eOI57F0B1A/7a3pTsGFCUBj5xG8rYA/6 dM3OY61cKjBPAizN+fGA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pc4eO-00AHh7-2E; Tue, 14 Mar 2023 13:25:12 +0000 Received: from fd01.gateway.ufhost.com ([61.152.239.71]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pc4eJ-00AHd3-2x for linux-riscv@lists.infradead.org; Tue, 14 Mar 2023 13:25:11 +0000 Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id 76F7124E300; Tue, 14 Mar 2023 21:24:42 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 14 Mar 2023 21:24:42 +0800 Received: from localhost.localdomain (113.72.145.194) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 14 Mar 2023 21:24:38 +0800 From: Xingyu Wu To: , , , Wim Van Sebroeck , Guenter Roeck , Krzysztof Kozlowski , Emil Renner Berthing , Conor Dooley CC: Rob Herring , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , Subject: [PATCH v5 1/3] dt-bindings: watchdog: Add watchdog for StarFive JH7100 and JH7110 Date: Tue, 14 Mar 2023 21:24:35 +0800 Message-ID: <20230314132437.121534-2-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230314132437.121534-1-xingyu.wu@starfivetech.com> References: <20230314132437.121534-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [113.72.145.194] X-ClientProxiedBy: EXCAS066.cuchost.com (172.16.6.26) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230314_062508_587473_53C7599F X-CRM114-Status: GOOD ( 12.89 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Add bindings to describe the watchdog for the StarFive JH7100/JH7110 SoC. And Use JH7100 as first StarFive SoC with watchdog. Signed-off-by: Xingyu Wu Reviewed-by: Krzysztof Kozlowski Reviewed-by: Guenter Roeck --- .../watchdog/starfive,jh7100-wdt.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/starfive,jh7100-wdt.yaml diff --git a/Documentation/devicetree/bindings/watchdog/starfive,jh7100-wdt.yaml b/Documentation/devicetree/bindings/watchdog/starfive,jh7100-wdt.yaml new file mode 100644 index 000000000000..68f3f6fd08a6 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/starfive,jh7100-wdt.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/starfive,jh7100-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: StarFive Watchdog for JH7100 and JH7110 SoC + +maintainers: + - Xingyu Wu + - Samin Guo + +description: + The JH7100 and JH7110 watchdog both are 32 bit counters. JH7100 watchdog + has only one timeout phase and reboots. And JH7110 watchdog has two + timeout phases. At the first phase, the signal of watchdog interrupt + output(WDOGINT) will rise when counter is 0. The counter will reload + the timeout value. And then, if counter decreases to 0 again and WDOGINT + isn't cleared, the watchdog will reset the system unless the watchdog + reset is disabled. + +allOf: + - $ref: watchdog.yaml# + +properties: + compatible: + enum: + - starfive,jh7100-wdt + - starfive,jh7110-wdt + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: APB clock + - description: Core clock + + clock-names: + items: + - const: apb + - const: core + + resets: + items: + - description: APB reset + - description: Core reset + +required: + - compatible + - reg + - clocks + - clock-names + - resets + +unevaluatedProperties: false + +examples: + - | + watchdog@12480000 { + compatible = "starfive,jh7100-wdt"; + reg = <0x12480000 0x10000>; + clocks = <&clk 171>, + <&clk 172>; + clock-names = "apb", "core"; + resets = <&rst 99>, + <&rst 100>; + };