From patchwork Mon Jul 24 22:30:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 705980 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 CD0EFEB64DD for ; Mon, 24 Jul 2023 22:31:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230253AbjGXWb2 (ORCPT ); Mon, 24 Jul 2023 18:31:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230251AbjGXWb2 (ORCPT ); Mon, 24 Jul 2023 18:31:28 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 335BD10E3; Mon, 24 Jul 2023 15:31:26 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36OMIQEw029962; Mon, 24 Jul 2023 22:31:16 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-transfer-encoding : content-type; s=qcppdkim1; bh=tgztBj0/mJz03MJdJCZ9JHhqYfeG+XgYMvyAdd3/QYQ=; b=Jolm/4Pto6H89NYXkiAY7sBP8McF6X5D9RAED5RaPWKCwo+tYb5IKqLr+XFMNtMTImxU v3qJM0Wh54TbYkdZE8XdI0IFNy7zGmbi2xxz0Fkih90YqWfSTBD66xncYYTU/9W88nWU 3EjL7oCmuaX9XvuP2ie1MBnWiKm75Z38e+jerYhu4f9+1COlGo6bVR9x+HpZheZVX8yb Pp9ERQ2abZHJ99Vg6l3lXEt2k/tcekPjt//TXmDv/t72w1TcXj2pRGlT6V7O3tCMqDVG IhMecU7/iAWvixQcBzOgqDMjom+vBHQXPtE7JAnQuaj1IrU+ZnUsJnfWTuyYS0yzgCaq mQ== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s1v6u8w4c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 22:31:16 +0000 Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 36OMVE3b005283 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 22:31:14 GMT Received: from hu-eberman-lv.qualcomm.com (10.49.16.6) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Mon, 24 Jul 2023 15:31:14 -0700 From: Elliot Berman To: Mark Rutland , Lorenzo Pieralisi , Sebastian Reichel CC: Elliot Berman , Krzysztof Kozlowski , Conor Dooley , "Rob Herring" , , , , , , , Satya Durga Srinivasu Prabhala , Melody Olvera , "Prasad Sodagudi" Subject: [RFC PATCH 0/4] Implement a PSCI SYSTEM_RESET2 reboot-mode driver Date: Mon, 24 Jul 2023 15:30:50 -0700 Message-ID: <20230724223057.1208122-1-quic_eberman@quicinc.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: AJZTyLSqDAycFmRx5BX6rUgsWlnPQb9X X-Proofpoint-GUID: AJZTyLSqDAycFmRx5BX6rUgsWlnPQb9X 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=2023-07-24_16,2023-07-24_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 suspectscore=0 priorityscore=1501 mlxlogscore=844 lowpriorityscore=0 impostorscore=0 mlxscore=0 spamscore=0 adultscore=0 phishscore=0 malwarescore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307240196 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org PSCI implements a restart notifier for architectural defined resets. The SYSTEM_RESET2 call allows vendor firmware to define additional reset types which could be mapped to the reboot reason. Implement a driver to wire the reboot-mode framework to make vendor SYSTEM_RESET2 calls on reboot. This is a continuation from https://lore.kernel.org/all/4a679542-b48d-7e11-f33a-63535a5c68cb@quicinc.com/ Elliot Berman (4): power: reset: reboot-mode: Allow magic to be 0 power: reset: reboot-mode: Wire reboot_mode enum to magic dt-bindings: power: reset: Document arm,psci-vendor-reset power: reset: Implement a PSCI SYSTEM_RESET2 reboot-mode driver .../power/reset/arm,psci-vendor-reset.yaml | 35 +++++++++++++ MAINTAINERS | 2 + drivers/firmware/psci/psci.c | 9 ++++ drivers/power/reset/Kconfig | 9 ++++ drivers/power/reset/Makefile | 1 + drivers/power/reset/psci-vendor-reset.c | 49 +++++++++++++++++++ drivers/power/reset/reboot-mode.c | 44 ++++++++++++----- include/linux/psci.h | 2 + 8 files changed, 139 insertions(+), 12 deletions(-) create mode 100644 Documentation/devicetree/bindings/power/reset/arm,psci-vendor-reset.yaml create mode 100644 drivers/power/reset/psci-vendor-reset.c base-commit: 6eaae198076080886b9e7d57f4ae06fa782f90ef