From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3ACAB3002BC for ; Wed, 17 Sep 2025 18:57:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758135426; cv=none; b=AlFccJgx/FgV0cyJ0Xq47CNE7JaHrHvj1XXCin6p2qe99pJNOFXTQraJQWgaSd6GLu3/fUy3L7h6IaikjWY02sepaDG7Zuvs7mG8iSI/pB9yuUMcXGwIzewptRInKEs6BTr3MO/PgIwgfUlEh+aHUTP0NO/XBeWEyq9U2DN0NM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758135426; c=relaxed/simple; bh=rGHIg49NqT/vw8VGSZsrsfHcMRmvB0DOxfh5E1K8G3E=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=fipZt6//2XFIy3qHUR2/HqQpAbMNNwspYoxFSUPvwKWqxHBa2fu/Xky5MSMj1tNJS4AarfI9hq1u6VX4193rMFRJ/tCkaDv+IYeBmgJJbbFuyR4+zjPx8Cirohllrwo8iA3fDuiKwdzC8l0IxBThXbxObZ+AS3x2eR/4PNM7ALQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=mJ0+g/gb; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="mJ0+g/gb" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :mime-version:content-transfer-encoding; s=k1; bh=YW/nOjUofYiXh8 O/soaQF4m/L42j3TGPSSIIRZmVY/A=; b=mJ0+g/gbf/0ZIq7utou8o46LYxvPsW 3kR6OAZunOOke44zZOi7J9vB6BgnqCqMkaolWhLUTVHEO8HmVBQRqRrrTalnskIA tpra8bYaopFrFJZbMOeGlG78GYyHB7+i2mx445hib9NsvCJf1MjmEe+UOP0LqQ5r 1Z/kOrm/iP3rOSXT1i+1+bNWZ1Hm4OhlbX5RSR9ArvurKQIKuhyNPfKutZJnbpxR v65iGkkmGGnLtnoq43KWp3MmqlpyR827SIL2gdiPfw2PyrHbWdbiH0sYJPqHbg0P YTyk36HcmmFf2BiUleaTnqEvd9eyI1fueqnu5PueP7KQdr6ZWPUStqSg== Received: (qmail 3238961 invoked from network); 17 Sep 2025 20:56:59 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 17 Sep 2025 20:56:59 +0200 X-UD-Smtp-Session: l3s3148p1@qDAazQM/ZMUujnvK From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Wolfram Sang , Conor Dooley , devicetree@vger.kernel.org, Geert Uytterhoeven , Guenter Roeck , Krzysztof Kozlowski , linux-watchdog@vger.kernel.org, Magnus Damm , Rob Herring , Wim Van Sebroeck Subject: [PATCH 0/2] watchdog: add Renesas Window Watchdog support Date: Wed, 17 Sep 2025 20:56:47 +0200 Message-ID: <20250917185651.12428-1-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.47.2 Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This Window Watchdog is a little peculiar because it can only be setup once but we cannot find out if this write already happened. So, configuration is delegated to the firmware/bootloader and the driver will adapt to whatever is configured. The driver handles all bits described in the datasheets. This is really all there is. Tested on a SparrowHawk board (Renesas R-Car V4H). Looking forward to comments! Wolfram Sang (2): dt-bindings: watchdog: Add Renesas WWDT watchdog: renesas_wwdt: add driver .../bindings/watchdog/renesas,wwdt.yaml | 78 +++++++++ drivers/watchdog/Kconfig | 8 + drivers/watchdog/Makefile | 1 + drivers/watchdog/renesas_wwdt.c | 156 ++++++++++++++++++ 4 files changed, 243 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/renesas,wwdt.yaml create mode 100644 drivers/watchdog/renesas_wwdt.c -- 2.47.2