From patchwork Wed Jul 19 11:43:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrej Picej X-Patchwork-Id: 704419 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 888FEC0015E for ; Wed, 19 Jul 2023 11:44:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230259AbjGSLoM (ORCPT ); Wed, 19 Jul 2023 07:44:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230120AbjGSLoK (ORCPT ); Wed, 19 Jul 2023 07:44:10 -0400 Received: from cpanel.siel.si (cpanel.siel.si [46.19.9.99]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 218AEC7; Wed, 19 Jul 2023 04:44:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=norik.com; s=default; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=MSdPB9oiEpbaOVi+tO3RL5bqf6DBFI0pi7P36ku9dg4=; b=WNX3eKxTXMeqw3xHrBFpCXoTLe C4KhmHF9gM4h6SB+Z5XPfSxi6Sj/wFjvEbIe2Gv1U+InxysNlX02c0HcIfl25ECgcMP7GGr7YRwsn 20H0stYVgajGpgVaCwtpbtEJr8kPxhvNzmkxktBBzacarpY47wjDKMM3N8vEjRWXDJWYyHxK81hXo 9+Di+m0fGkVxWBbikM6Sfakmo7+1ib7vJ8q9cSdNurI1NC2/Twqlc9dBpL2xk2VFbDGUyg4yobsoz o/s83WPxvGM4JOB4gxUsHTjhgZf4C0xJ3yfyDsm19mVvVqW/ovqo0ZoGmPaobDg1nWL+2v1BdwxJz FMDgqXaw==; Received: from 89-212-21-243.static.t-2.net ([89.212.21.243]:56038 helo=localhost.localdomain) by cpanel.siel.si with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from ) id 1qM5b1-00DcDD-1o; Wed, 19 Jul 2023 13:43:55 +0200 From: Andrej Picej To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, S.Riedmueller@phytec.de, S.Mueller-Klieser@phytec.de, upstream@phytec.de Subject: [PATCH v2 2/3] ARM: dts: imx6: pfla02: Rely on PMIC reboot/reset handler Date: Wed, 19 Jul 2023 13:43:27 +0200 Message-Id: <20230719114328.2239818-2-andrej.picej@norik.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230719114328.2239818-1-andrej.picej@norik.com> References: <20230719114328.2239818-1-andrej.picej@norik.com> MIME-Version: 1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - cpanel.siel.si X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - norik.com X-Get-Message-Sender-Via: cpanel.siel.si: authenticated_id: andrej.picej@norik.com X-Authenticated-Sender: cpanel.siel.si: andrej.picej@norik.com X-Source: X-Source-Args: X-Source-Dir: Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Due to the missing signal connection between i.MX6 WDOG_B pin and the PMICs external reset, the internal i.MX6 watchdog is not able to reset the phyFLEX SoM properly. Thus disable the internal i.MX6 watchdog to prevent unexpected PMIC settings after reset. NOTE: This patch should not be backported as it might break existing uses and fixes in bootloaders. Signed-off-by: Andrej Picej --- Changes in v2: - this is a substitute patch with a proper fix. --- arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi index 80adb2a02cc9..65fd7b4a6f27 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi @@ -464,3 +464,11 @@ &usdhc3 { vmmc-supply = <&vdd_sd0_reg>; status = "disabled"; }; + +&wdog1 { + /* + * Rely on PMIC reboot handler. Internal i.MX6 watchdog, that is also + * used for reboot, does not reset all external PMIC voltages on reset. + */ + status = "disabled"; +};