From patchwork Mon Jul 17 06:41:23 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: 13315246 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 BC04BC001E0 for ; Mon, 17 Jul 2023 06:42:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229906AbjGQGmx (ORCPT ); Mon, 17 Jul 2023 02:42:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41524 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229835AbjGQGmq (ORCPT ); Mon, 17 Jul 2023 02:42:46 -0400 Received: from mta-64-225.siemens.flowmailer.net (mta-64-225.siemens.flowmailer.net [185.136.64.225]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F23110F9 for ; Sun, 16 Jul 2023 23:42:36 -0700 (PDT) Received: by mta-64-225.siemens.flowmailer.net with ESMTPSA id 20230717064234f9122f3c81ae64602b for ; Mon, 17 Jul 2023 08:42:34 +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:References:In-Reply-To; bh=jnvC6oqf7550vuX04Y+Pl19iCeyz3P0LnhYgz2I4V6w=; b=V4MDgfPufjIsk99rIuCKcySwCscCpLokAdMf9J/sCPVwjq5Yuz4n8qXXKz9UuyJGXuDpDl AzZaD9cXbWbvO5Wczwcp+pmpXMnogwsRl0nE2eFCpWepDro2gIyF+2ZKoCv2xz/83Z0Y0fmh rc+HRKSSp/PTxtMH4YP603pjX/xHI=; 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: [DONOTMERGE PATCH v5 2/3] arm64: dts: ti: Add reserved memory for watchdog Date: Mon, 17 Jul 2023 14:41:23 +0800 Message-Id: <20230717064124.1315746-3-huaqian.li@siemens.com> In-Reply-To: <20230717064124.1315746-1-huaqian.li@siemens.com> References: <20230717064124.1315746-1-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 This patch adds a reserved memory for the TI AM65X platform watchdog to reserve the specific info, triggering the watchdog reset in last boot, to know if the board reboot is due to a watchdog reset. Signed-off-by: Li Hua Qian --- arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi index e26bd988e522..4bb20d493651 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi @@ -63,6 +63,12 @@ rtos_ipc_memory_region: ipc-memories@a2000000 { alignment = <0x1000>; no-map; }; + + /* To reserve the power-on(PON) reason for watchdog reset */ + wdt_reset_memory_region: wdt-memory@a2200000 { + reg = <0x00 0xa2200000 0x00 0x1000>; + no-map; + }; }; leds { @@ -718,3 +724,7 @@ &mcu_r5fss0_core1 { <&mcu_r5fss0_core1_memory_region>; mboxes = <&mailbox0_cluster1>, <&mbox_mcu_r5fss0_core1>; }; + +&mcu_rti1 { + memory-region = <&wdt_reset_memory_region>; +};