From patchwork Wed Jul 5 05:32:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 699718 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 CFDE0C001E0 for ; Wed, 5 Jul 2023 05:33:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231270AbjGEFd0 (ORCPT ); Wed, 5 Jul 2023 01:33:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230487AbjGEFdY (ORCPT ); Wed, 5 Jul 2023 01:33:24 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA46BE3; Tue, 4 Jul 2023 22:33:23 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3655R9s6010520; Wed, 5 Jul 2023 05:33:02 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=fMI+CGIPKH5SbOwUbji5gwSRrdN0l3dcn45P2g6P+iM=; b=cz3CLVNA2zDbZ7WRpSSSjeoKVWmelpkuHDQz9ULBJRHIMMWksFuLS8KZMVCR4Ewka7ao L5ed7b6EBJ46IDvpr7X1LEPQWIGzZi2CQsVu+5xGTyvdihCTYPzs5yAbB1nJEarK76bW evm+RGgyPE2E1+Q56vK3ozCT4k7fVqgpfR9ABqCkVqwoy3WIOmkLMst/g1qJg2OaT+n0 4ZGKqTaCZaPHEhUi9+jWDmaRG4lorLeW5RMviBsXoJPwZP4v0PCU1xpopIpln1YvFsBo w/sViZv0wknQYpM+YORceKOGxCd1ITLyFEUTwoC8OA3hYmdp369nwawdsRrdS9MUnjg0 Ig== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rn2cp809d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Jul 2023 05:33:01 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3655X1vM002420 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 5 Jul 2023 05:33:01 GMT Received: from hu-schowdhu-blr.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.7; Tue, 4 Jul 2023 22:32:57 -0700 From: Souradeep Chowdhury To: Andy Gross , Konrad Dybcio , Krzysztof Kozlowski , Bjorn Andersson , Rob Herring , Arnd Bergmann CC: , , , , Sibi Sankar , Rajendra Nayak , Souradeep Chowdhury Subject: [PATCH V7 0/2] firmware: Add support for boot_stats Date: Wed, 5 Jul 2023 11:02:30 +0530 Message-ID: X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: -NcZajytzaNAr-41PGjW7zBddm3IesMk X-Proofpoint-ORIG-GUID: -NcZajytzaNAr-41PGjW7zBddm3IesMk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-04_16,2023-07-04_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 spamscore=0 clxscore=1015 bulkscore=0 mlxlogscore=534 lowpriorityscore=0 suspectscore=0 impostorscore=0 mlxscore=0 adultscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2307050050 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Qualcomm's proprietary Android boot-loaders capture boot time stats, like the time when the bootloader started execution and at what point the bootloader handed over control to the kernel etc. in the IMEM region. This information is captured by the bootloader and populated on the device tree properties "pre-abl-time" and "abl-time" which can be be viewed from the user space like as follows:- /sys/firmware/devicetree/base/bootstats # cat abl_time 17898 As a part of this patch series added the bindings for boot-stats which was suggested in the v6 of the series. The link for the same is as follows:- https://lore.kernel.org/linux-arm-kernel/7d397e67-5d56-4975-98af-1ac9746c07f4@app.fastmail.com/ Souradeep Chowdhury (2): dt-bindings: firmware: bootstats: Add the dtschema MAINTAINERS: Add the entry for boot_stats support .../bindings/firmware/qcom,bootstats.yaml | 38 +++++++++++++++++++ MAINTAINERS | 6 +++ 2 files changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/qcom,bootstats.yaml --- 2.17.1