From nobody Fri Sep 5 09:57:35 2025 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 390FFC001B0 for ; Tue, 18 Jul 2023 02:12:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229892AbjGRCMT (ORCPT ); Mon, 17 Jul 2023 22:12:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230103AbjGRCMR (ORCPT ); Mon, 17 Jul 2023 22:12:17 -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 E1EF410E0 for ; Mon, 17 Jul 2023 19:12:15 -0700 (PDT) Received: by mta-64-225.siemens.flowmailer.net with ESMTPSA id 202307180212139b6b46617cc0756d13 for ; Tue, 18 Jul 2023 04:12:13 +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=j+Qe5PJS31fRn683lpJIQoCf3lVQHyH1rI9C9O77mw7id+Ojb4ij/svhJzm0NRaxDwab5v +9dnLpZufmMg7OefG4RuRquUaYrQ2K6bahLScPMHRSGOWirZSwiF4+r/xXSiqM2UmH5Fi/SD HSMUGzsvOR38JSzkvS0qpAX8sn9Yw=; 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 v6 2/3] arm64: dts: ti: Add reserved memory for watchdog Date: Tue, 18 Jul 2023 10:10:06 +0800 Message-Id: <20230718021007.1338761-3-huaqian.li@siemens.com> In-Reply-To: <20230718021007.1338761-1-huaqian.li@siemens.com> References: <20230718021007.1338761-1-huaqian.li@siemens.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-959203:519-21489:flowmailer Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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/arm6= 4/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 =3D <0x1000>; no-map; }; + + /* To reserve the power-on(PON) reason for watchdog reset */ + wdt_reset_memory_region: wdt-memory@a2200000 { + reg =3D <0x00 0xa2200000 0x00 0x1000>; + no-map; + }; }; =20 leds { @@ -718,3 +724,7 @@ &mcu_r5fss0_core1 { <&mcu_r5fss0_core1_memory_region>; mboxes =3D <&mailbox0_cluster1>, <&mbox_mcu_r5fss0_core1>; }; + +&mcu_rti1 { + memory-region =3D <&wdt_reset_memory_region>; +}; --=20 2.34.1