From nobody Tue Feb 10 06:26:43 2026 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 DE40D369979 for ; Fri, 30 Jan 2026 10:44:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769769898; cv=none; b=TSLRpXcElKVkwNUJZumfcaJ7CndVjQE2Xl1swd9v3OtTJGfa3kM2Fjv7jHasfW707Dc69JzlQfYepitPPyVrWgHgOxY5THQjThdwUkfCn8lUyb840pkBVTdwtFZB0rHMVnXccYC0QacJeTQvrb6RTdlD85sTA+rW3GAKzYHTzJQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769769898; c=relaxed/simple; bh=KxBK6OjZJkiPEZOzkNjaOpHTYNYoeONVokaK5mjjISo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=DRqM3WYhn30iRvgMH46/HgIFcgnIKfbiI9rdLxgiv8wrNOIT8gdm5IyjoWqSf/9DL4OBKE3E93VasNPMAv3rdnbulmt1YvlnCWcsU4i7aBz2YhAMFnvYmT+J0xZJHAcXbUqDYbQoan1i/fdyOeICMwUuuO8IG8H0sSgKN7TQs+s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=oZWJMM/u; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=K9/1vo+I; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="oZWJMM/u"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="K9/1vo+I" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 60U3VRXh891353 for ; Fri, 30 Jan 2026 10:44:52 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= YtG6WPTcjzLihlfXarx3roIi0Prm8xlSM4EqqyOsOmU=; b=oZWJMM/umxwz+wpn QkAHd4EpQL/qKIFmAmRZ3Iiqb349MyajTyoYEWScmcCK/rUtfq31qvTaXw3T2+DQ ZZPc41UZdyem080CH4e/XzNXgtRMdAIh686z04L1XWIgX+l87kmI7yts1MIcfxNB MbSvOxoYLHbC9uyfN5iqgosiNhUuc52cmmLcSwGuj6gmriyQEpPA4oyInSWifpii mVRV5QjFs0OONMgr/Fq8Y3oGqlRoHfPAbTBcXhzXp+cW68iwMf2wGQSpfzAPR22r JNwCLvBpO5rFBIep5LvaE5LYbrp1c0eUatbLcqifcEKRSOUjddT9XYP9CjxHhex2 QuiDpQ== Received: from mail-pl1-f197.google.com (mail-pl1-f197.google.com [209.85.214.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4c0gs7sued-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Fri, 30 Jan 2026 10:44:52 +0000 (GMT) Received: by mail-pl1-f197.google.com with SMTP id d9443c01a7336-29f1f79d6afso22925525ad.0 for ; Fri, 30 Jan 2026 02:44:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1769769892; x=1770374692; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=YtG6WPTcjzLihlfXarx3roIi0Prm8xlSM4EqqyOsOmU=; b=K9/1vo+IBcWjl9XqkyXTpEYGRUEdPH/u/iZPErtF91rmInarW6Xv6sLnAI6JyS7uyP 4AsN/hb4iz2OyN9wVWPHYf0JS9mPLXcn7ypnU9foVnzd56a6gD7Ei9q8u4u+uf5pnaM0 ZauMVDq12/gmXxjf9XjuTKn6mzminlpQAhBdI+4LAGsXjrN9SfAUoAd+BfyNNVpTrm9h wz/wB80mdKs+ocN5NZfcy9zd4TN2l5KIu6QWgAI966Lxvr2urPXCt63BDGBhHKYIa/yL +q4zXaNrdkSobuV9xo8yDLtIzLxKcBR6qpzJcUNmwI3LrSmuvviROfQXf0FtjFyFxmFD dRsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769769892; x=1770374692; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=YtG6WPTcjzLihlfXarx3roIi0Prm8xlSM4EqqyOsOmU=; b=fFKxVFNJrchGoFAoUq8EUVudCdr6W5D6VdI06ZZT5+SX218UddZiyQt6iio3KOUFhG UorGtxAoFn63pETnW0+AOVtBwu4E5mB0OMrIJT/yH+HyHcwKzdiEqKsU3lOecoiG6q36 NquP5gERJU6P3Q9gJH4wSFI8G+nYR1IyC2LVCN6obXFnwpYO51gThrNeHwPqEdf7KtvS CA5H+36/h4OweLmMuxtM3cL7B2Upg/a7AiAD0T025XC5aN3jeY9v8dOY3hsepr1fbmsb WZoXD0mh/dW07hUxCYD0YVrilqrHn0T0JzyKC2iKi5Jc2y0/cTO4gRiwXeTfLNIgjeAK 4taQ== X-Forwarded-Encrypted: i=1; AJvYcCW4rDbizSOiYj42e62RRdtxgRa8HgsZpVWKCDMmNF/CZk16WitPTpcMTOORYiDHMW9YwX8b+rf9T+ukr6A=@vger.kernel.org X-Gm-Message-State: AOJu0YwuKJXQJNH5gZkXYnB3zoFjhEGiS0LG7xdWQdtlhA1FJEEyJ48s QncIDWi45/JmI1jOPsZA2/wNrLhXQyGEV6bLArAuXSM70S4iF3N9j9qtWkzUmJd6OSMiZsRLKxH oZCM4lWNC1qQ7N421zH/QHli4stAgiT99c+hMm7bqjfV5cGtdP+TfwVImK19DMII1uAY= X-Gm-Gg: AZuq6aJr5gqfyIM7TdhVcvFKTZzcqKUECSKpxLKGEuGRhncgsSKZeCfapdvn6rYfxpM oRpF174xMWAy1ny/972kUrD4ZANktpzr8JMd373KUHH7NaCQtGG2psITbf1qB9fZhD7a+w3QhIm Y+mdmPE0nmhRyx5oNut7zmUt3eelnhErk3LmiyThvNrXjmK1gj3l4BeTyrxg3oNHSWe2C1Pk5NQ C+8uTzOXATxT1bmGNNmp3y36Wwlyek1ixjhbvMVHo3mePmN0oH1wqGyK9aQ4rNaxZzfHn5V9bfd 1Tpey0a/stLEy62Vic3pSn4G0x7+6Xv7m6rAtA4XnJMxxo6kcYIfnVh3K69DCbN5S6SOGzgAJC5 MLPBy5cVRZSjS2MRO5sgSzE7ZEFfPdx4Yzqfo33QG5ngtTBQ/5ioMNVna0UJWmNinsY0vrcj4ta e8bcKrRodyxHLMnIWWS0G6c2VhlcleDxf3wwb5y+u5jTQ1 X-Received: by 2002:a17:903:3c6e:b0:2a7:aa9e:fb40 with SMTP id d9443c01a7336-2a8d9931888mr25169845ad.45.1769769892087; Fri, 30 Jan 2026 02:44:52 -0800 (PST) X-Received: by 2002:a17:903:3c6e:b0:2a7:aa9e:fb40 with SMTP id d9443c01a7336-2a8d9931888mr25169495ad.45.1769769891609; Fri, 30 Jan 2026 02:44:51 -0800 (PST) Received: from hu-kathirav-blr.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com. [103.229.18.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a88b5d92a9sm71231465ad.69.2026.01.30.02.44.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Jan 2026 02:44:51 -0800 (PST) From: Kathiravan Thirumoorthy Date: Fri, 30 Jan 2026 16:14:32 +0530 Subject: [PATCH v6 3/5] dt-bindings: watchdog: qcom-wdt: Document sram property Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260130-wdt_reset_reason-v6-3-417ab789cd97@oss.qualcomm.com> References: <20260130-wdt_reset_reason-v6-0-417ab789cd97@oss.qualcomm.com> In-Reply-To: <20260130-wdt_reset_reason-v6-0-417ab789cd97@oss.qualcomm.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Wim Van Sebroeck , Guenter Roeck , Rajendra Nayak Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, Kathiravan Thirumoorthy X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1769769874; l=1446; i=kathiravan.thirumoorthy@oss.qualcomm.com; s=20230906; h=from:subject:message-id; bh=KxBK6OjZJkiPEZOzkNjaOpHTYNYoeONVokaK5mjjISo=; b=B5HpoQVIZqG36Y+r56qZZrKZM0ISsrtvif+5v5NInl7DrUJMiJD0Ay+baCRhibY6EMe9VQjk8 fsqzAlGKGdlANYSz21JPvRJYVUJxEynGgo7traqKK4rpkZAdxDxcc9O X-Developer-Key: i=kathiravan.thirumoorthy@oss.qualcomm.com; a=ed25519; pk=xWsR7pL6ch+vdZ9MoFGEaP61JUaRf0XaZYWztbQsIiM= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTMwMDA4NyBTYWx0ZWRfX2a/rfmy2JPpI YrsLDps4kaifAZJYRMUni25ImUylH3Q0a8dNiP/5b7AnBBuSGBPqdRBcWUJvLBAK9VGpgQakqY7 b8CNvDNTPhh4AID9Jl/gE8vYIvG3TjvDKnEc8ZSNuKtRHKUy+hhCapc7SwY3os43pzizG+NZrog GdprU52YVptdH0IKUxDKYQ0dgI8juK5UZLoQKFhjGebm9GzSKC9Bv5z3O79HYNfP803M4lCPGpz PGhTAWQM8WXCYWwh+Ge3F61M+AfqRsNrKGyS39O8ZMw2XRwluI7X6D044HRIJTrhW+6qmDFbJZN jqOuJ4b4uqBE7enDUAfe8a9NpTzJEaKvJkVciE7GNcNgW+m6LvstWk8zTOxE3+HIKycqZC81V68 9zikTQ1yC0Dl/IkUrnWj+xvjI9jlkShe4aiX03Npfv1dQyCfIUpGTS3Wrsl9xcA8fR0a5dDfnIZ qU39hxUPP9QqALqZZOQ== X-Proofpoint-ORIG-GUID: ORGh4CFDcIVtiS49g1ZNP7MJJCkaFXNX X-Proofpoint-GUID: ORGh4CFDcIVtiS49g1ZNP7MJJCkaFXNX X-Authority-Analysis: v=2.4 cv=UPLQ3Sfy c=1 sm=1 tr=0 ts=697c8ba4 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=bt_IPO6jKyPzq02bTywA:9 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-01-30_01,2026-01-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 adultscore=0 suspectscore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 spamscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601300087 Document the "sram" property for the watchdog device on Qualcomm IPQ platforms. Use this property to extract the restart reason from IMEM, which is updated by XBL. Populate the watchdog's bootstatus sysFS entry with this information, when the system reboots due to a watchdog timeout. Describe this property for the IPQ5424 watchdog device and extend support to other targets subsequently. Signed-off-by: Kathiravan Thirumoorthy Reviewed-by: Rob Herring (Arm) --- Changes in v6: - Update the 'sram' property to point to the SRAM region Changes in v5: - Rename the property 'qcom,imem' to 'sram' Changes in v4: - New patch --- Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml b/Doc= umentation/devicetree/bindings/watchdog/qcom-wdt.yaml index 9f861045b71e8316ae88f8078a86043a6d04def8..3ead00da3cd6ffa0f6102179565= 723d4ab6c2929 100644 --- a/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml +++ b/Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml @@ -84,6 +84,12 @@ properties: minItems: 1 maxItems: 5 =20 + sram: + maxItems: 1 + description: + A reference to an region residing in IMEM(on-chip SRAM), which conta= ins + the system restart reason value populated by the bootloader. + required: - compatible - reg --=20 2.34.1