From patchwork Fri Jan 13 11:58:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Ojha X-Patchwork-Id: 642211 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 EEFC9C54EBE for ; Fri, 13 Jan 2023 12:08:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231338AbjAMMIZ (ORCPT ); Fri, 13 Jan 2023 07:08:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233174AbjAMMHe (ORCPT ); Fri, 13 Jan 2023 07:07:34 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21138E3; Fri, 13 Jan 2023 03:59:26 -0800 (PST) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30DBA0Jp030099; Fri, 13 Jan 2023 11:59:05 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=tUm6z8rhz5JYg4o8nm0MDjJ+lFRhmC9Z6zMZeJ23joo=; b=XOjEGu0nMYAKblUuw08qsV3r01MGl/7u8E/GR/NotQEIaHrrB3BzruXvA4ynXDqA6MfW 1JM4+DH39zqEiaRFxZVB7lNzk93ILNWz10Xu6qpli+/19jBDSXyVdUwJpmrvZQSDa7ar NmAHF8+7879PVggQKj8SJ8nrSkWyqv14ckuHSz/3K/YEfv8nPGBKD77a/KRcz9zZE3ZM aPdUmfW+3ufzrZijw4fUIImv7AbRM/JwXerlONjUxr6l7kJqHoGW27RX7SZf6sn8/4ti 6rlMbGyGrVFI1X0zHl6fvh3lPtdMKB530sJgSQd/MNbDB41J4wQB/qb7g4catUznBDyK aA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3n2jghtk79-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Jan 2023 11:59:05 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 30DBx4dq025641 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Jan 2023 11:59:04 GMT Received: from hu-mojha-hyd.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Fri, 13 Jan 2023 03:59:00 -0800 From: Mukesh Ojha To: , , , , , CC: , , , , Mukesh Ojha Subject: [PATCH v2 1/3] dt-bindings: reserved-memory: ramoops: Update the binding Date: Fri, 13 Jan 2023 17:28:44 +0530 Message-ID: <1673611126-13803-1-git-send-email-quic_mojha@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 8eDys0jK4zvAYYr57p5RD86TQAo9kAma X-Proofpoint-ORIG-GUID: 8eDys0jK4zvAYYr57p5RD86TQAo9kAma X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.923,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-13_05,2023-01-13_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 malwarescore=0 mlxscore=0 suspectscore=0 priorityscore=1501 phishscore=0 clxscore=1011 bulkscore=0 impostorscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301130080 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Update the ramoops region binding document with details like region can also be reserved dynamically apart from reserving it statically. Signed-off-by: Mukesh Ojha --- Change in v2: - Added this patch as per changes going to be done in patch 3/3 .../bindings/reserved-memory/ramoops.yaml | 34 ++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/reserved-memory/ramoops.yaml b/Documentation/devicetree/bindings/reserved-memory/ramoops.yaml index 0391871..54e46e8 100644 --- a/Documentation/devicetree/bindings/reserved-memory/ramoops.yaml +++ b/Documentation/devicetree/bindings/reserved-memory/ramoops.yaml @@ -10,7 +10,8 @@ description: | ramoops provides persistent RAM storage for oops and panics, so they can be recovered after a reboot. This is a child-node of "/reserved-memory", and is named "ramoops" after the backend, rather than "pstore" which is the - subsystem. + subsystem. This region can be reserved both statically or dynamically by + using appropriate property in device tree. Parts of this storage may be set aside for other persistent log buffers, such as kernel log messages, or for optional ECC error-correction data. The total @@ -112,7 +113,13 @@ unevaluatedProperties: false required: - compatible - - reg + +oneOf: + - required: + - reg + + - required: + - size anyOf: - required: [record-size] @@ -142,3 +149,26 @@ examples: }; }; }; + + - | + / { + compatible = "foo"; + model = "foo"; + #address-cells = <2>; + #size-cells = <2>; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + ramoops: ramoops_region { + compatible = "ramoops"; + alloc-ranges = <0x0 0x00000000 0xffffffff 0xffffffff>; + size = <0x0 0x10000>; /* 64kB */ + console-size = <0x8000>; /* 32kB */ + record-size = <0x400>; /* 1kB */ + ecc-size = <16>; + }; + }; + };