From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (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 E35FF32861F; Mon, 2 Mar 2026 11:33:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772451225; cv=none; b=aCXdqrg88/UzR960OkXecCThmt0ftUwdBVqP4IFC8kiLEoeol0owoZC5LBBdrdHiHtpOdyYRD+Wjem+AXRcOvpVWbIBhkahfM6/F58FCU3kFnDMk/21hENR+sjNdcvg3AfFQJHi58hEviMVQogSaSTd5IeSxqnmauG4FMm0ShM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772451225; c=relaxed/simple; bh=TLAGm/Xm/NIOke7FgpiE5RxbSPLY/5vGq7tktPxAuTs=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=CrbBoiddO3X7XOWhg3ctpYGZJWIwIo3hPFkTYmGtVyudkC+ND9gbeXIxPKUsvgr2as+yQdwpc7bAGzQwf+l3eaCBWY3o1qMAUHdqQ5Gl89A7t2Y6+42H7J7joUoPN65aqtYRzAdmnhKL5TcTqp5lHJVQ53rGS1oOkio/nCcC3PM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=kTAkIRzL; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="kTAkIRzL" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1772451225; x=1803987225; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=TLAGm/Xm/NIOke7FgpiE5RxbSPLY/5vGq7tktPxAuTs=; b=kTAkIRzL0Uo6pHmZ5M7Sn5EZiIqWi5p1yK8efGJ9TwHInidw+9h0sxyq Kp3ecgeSATBWINIH82fNrK+rXrm5e046nZP8aVHBRRTOO9OjazNegkWke pdunB5mkQDK0c9HHDfphWBffrOeQcutPhBs+uH2Rvrb5XJlOSHHnBCYOG n6ELRPXrYstxTEub3pqmvc3Gj4wiBERlO1ZoBxTVUp4DLLwr8xjLqLTwV rC1l2bk8E0v9eb/jjpnIYBuTsE8RTAmvQvAci5JCNPOPRf6PNf8Sirj8f jO+451Cv+2Kiufvv1Z4ZQSX+MFz+DlDtX3U7r8bmMvUOOnKTuKIlEqLAE g==; X-CSE-ConnectionGUID: Btinl9WeT2+oaoBxEtKcig== X-CSE-MsgGUID: vw7UREDWQIqModl2L0GP0g== X-IronPort-AV: E=Sophos;i="6.21,319,1763449200"; d="scan'208";a="54070300" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa3.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2026 04:33:38 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.87.71) by chn-vm-ex1.mchp-main.com (10.10.87.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.35; Mon, 2 Mar 2026 04:33:14 -0700 Received: from che-ll-i71840.microchip.com (10.10.85.11) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Mon, 2 Mar 2026 04:33:11 -0700 From: Balakrishnan Sambath To: CC: , , , , , Subject: [PATCH v2 0/2] watchdog: sama5d4_wdt: Fix WDDIS handling for SAM9X60 and SAMA7G5 Date: Mon, 2 Mar 2026 17:03:08 +0530 Message-ID: <20260302113310.133989-1-balakrishnan.s@microchip.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain The sama5d4_wdt driver hardcodes AT91_WDT_WDDIS (bit 15) for WDDIS detection, which is incorrect for SAM9X60 and SAMA7G5 that use bit 12 (AT91_SAM9X60_WDDIS). This series fixes the detection by introducing a per-device wddis_mask and documents the bit position difference in the header. Changes in v2: - Reorder patches: fix first, documentation second - Drop patch 3/3, not needed with wddis_mask approach - Keep AT91_SAM9X60_* register names, drop _LEGACY/_MODERN naming - Limit header changes to WDDIS comments and datasheet references Balakrishnan Sambath (2): watchdog: sama5d4_wdt: Fix WDDIS detection on SAM9X60 and SAMA7G5 watchdog: at91sam9_wdt.h: Document WDDIS bit position per SoC family drivers/watchdog/at91sam9_wdt.h | 6 +++-- drivers/watchdog/sama5d4_wdt.c | 48 +++++++++++++++------------------ 2 files changed, 25 insertions(+), 29 deletions(-) -- 2.34.1