From patchwork Mon Jul 17 04:07:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Hua Qian" X-Patchwork-Id: 704562 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 B0D59C001DC for ; Mon, 17 Jul 2023 04:09:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230338AbjGQEJB (ORCPT ); Mon, 17 Jul 2023 00:09:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229954AbjGQEI7 (ORCPT ); Mon, 17 Jul 2023 00:08:59 -0400 X-Greylist: delayed 72 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Sun, 16 Jul 2023 21:08:58 PDT Received: from mta-65-225.siemens.flowmailer.net (mta-65-225.siemens.flowmailer.net [185.136.65.225]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62C421B0 for ; Sun, 16 Jul 2023 21:08:58 -0700 (PDT) Received: by mta-65-225.siemens.flowmailer.net with ESMTPSA id 20230717040743bf8ab7b8905a53b6fc for ; Mon, 17 Jul 2023 06:07:44 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm1; d=siemens.com; i=huaqian.li@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc; bh=2amEu1G12NZIgjsL6jNeeisGyannGfGoc2STnkTzbqA=; b=D18pT6YiMNcSeR9UCwbsLr+w5HCnYhuDWh0Y/kBtWuuMxIDeLmRebcB9+fAdvDR5Nfi7oA wf16rsXR39/6+bmCIHH8GOs+S1j8b8MSY1zwtYiRhfxvfdFi7b9ueZ15Vw91AElxLAYXS1Nk IjoNw1FYfYzVp2tdl5z/6p7gyH4mo=; From: huaqian.li@siemens.com To: wim@linux-watchdog.org, linux@roeck-us.net, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org Cc: huaqianlee@gmail.com, nm@ti.com, vigneshr@ti.com, kristo@kernel.org, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, jan.kiszka@siemens.com, baocheng.su@siemens.com, Li Hua Qian Subject: [PATCH v4 0/3] Add support for WDIOF_CARDRESET on TI AM65x Date: Mon, 17 Jul 2023 12:07:20 +0800 Message-Id: <20230717040723.1306374-1-huaqian.li@siemens.com> MIME-Version: 1.0 X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-959203:519-21489:flowmailer Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org From: Li Hua Qian The watchdog hardware of TI AM65X platform does not support WDIOF_CARDRESET feature, add a reserved memory to save the watchdog reset cause, to know if the board reboot is due to a watchdog reset. Signed-off-by: Li Hua Qian --- Changes in v4: - Fix the coding style. - Add usage note for the reserved memory. - Link to v3: https://lore.kernel.org/linux-watchdog/20230713095127.1230109-1-huaqian.li@siemens.com Changes in v3: - Add memory-region back for the reserved memory, and remove reserved memory from the watchdog IO address space. - Add changelog. - Link to v2: https://lore.kernel.org/linux-watchdog/20230711091713.1113010-1-huaqian.li@siemens.com Changes in v2: - Remove memory-region and memory-size properties, and bind the reserved memory to watchdog IO address space. - Remove the unnecessary rti_wdt_ioctl. - Fix the mail list - Link to v1: https://lore.kernel.org/all/3137d87e56ef75ba0b8a923d407b2fecace6ccbd.camel@siemens.com v1 had a wrong mail list at the beginning, and the mail thread was messed up. Li Hua Qian (3): dt-bindings: watchdog: ti,rti-wdt: Add support for WDIOF_CARDRESET arm64: dts: ti: Add reserved memory for watchdog watchdog:rit_wdt: Add support for WDIOF_CARDRESET .../bindings/watchdog/ti,rti-wdt.yaml | 41 ++++++++++++++++ .../boot/dts/ti/k3-am65-iot2050-common.dtsi | 10 ++++ drivers/watchdog/rti_wdt.c | 48 +++++++++++++++++++ 3 files changed, 99 insertions(+)