From patchwork Mon Mar 10 10:37:25 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 14009544 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 BB96B227EA7 for ; Mon, 10 Mar 2025 10:37:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741603071; cv=none; b=fYimzc6JR+7J17WCwtgEE/DWlDL946g+JV2eiWkxcxWCCwZYAcqyWCKdJNIdUzLku/FVVnFTpusD791YBdXis47Pw0ATnU74K+yx/8MMR6LdU8YLL1dn3gxbbZISdskKPcTL2BxVqdqJ/NaavhBhv/a+lesVlktNfjIXHea4d7k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741603071; c=relaxed/simple; bh=WZ44EqYMRcMuhnvfDOn94ImnQ/OhaCbBhGQ53Ky/+Nk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Ku7CKCsKnGV/s6CNZrvSKqK2CDUW3da4iLpu16qK/hYXBPYgRT12Y8i9mqI9QXhc8mSjOs3S5v5bvz2QjOw3hmiywb168GEdizuEpXyQUOTOi2ScER0o8iIOo+rVUn4ztbkbXeL/WsSfRGCn0dlhV29CmqIbr1tf4/nw9dGo64w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1traVq-0004EA-5V; Mon, 10 Mar 2025 11:37:34 +0100 Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1traVp-004yyx-0r; Mon, 10 Mar 2025 11:37:33 +0100 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1traVp-001mCN-0d; Mon, 10 Mar 2025 11:37:33 +0100 From: Oleksij Rempel To: Sebastian Reichel , Srinivas Kandagatla Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, Liam Girdwood , Mark Brown , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , linux-pm@vger.kernel.org, =?utf-8?q?S?= =?utf-8?q?=C3=B8ren_Andersen?= Subject: [PATCH v5 0/7] Introduction of PSCR Framework and Related Components Date: Mon, 10 Mar 2025 11:37:25 +0100 Message-Id: <20250310103732.423542-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-pm@vger.kernel.org changes v5: - fix compile with NVMEM=n and potential issues with NVMEM=m changes v4: - fix compile with CONFIG_PSCRR=n changes v3 - rework to remove devicetree dependencies - extend NVMEM to search devices and cells by names. changes v2: - rename the framework from PSCR to PSCRR (last R is for Recorder) - extend power on reason header and use it to show detected reason on system start and in sysfs. - remove "unknow" reason - rebase on top of v6.8-rc1 - yaml fixes - zero reason state on boot Hello all, This patch series introduces the Power State Change Reasons Recording (PSCRR) framework and its related components into the kernel. The PSCR framework is designed for systems where traditional methods of storing power state change reasons, like PMICs or watchdogs, are inadequate. It provides a structured way to store reasons for system shutdowns and reboots, such as under-voltage or software-triggered events, in non-volatile hardware storage. These changes are critical for systems requiring detailed postmortem analysis and where immediate power-down scenarios limit traditional storage options. The framework also assists bootloaders and early-stage system components in making informed recovery decisions. Oleksij Rempel (7): power: Extend power_on_reason.h for upcoming PSCRR framework power: reset: Introduce PSCR Recording Framework for Non-Volatile Storage nvmem: provide consumer access to cell size metrics nvmem: add support for device and sysfs-based cell lookups power: reset: add PSCR NVMEM Driver for Recording Power State Change Reasons regulator: set Power State Change Reason before hw_protection_shutdown() thermal: core: Record PSCR before hw_protection_shutdown() drivers/nvmem/core.c | 116 ++++++++ drivers/power/reset/Kconfig | 30 ++ drivers/power/reset/Makefile | 2 + drivers/power/reset/pscrr-nvmem.c | 254 ++++++++++++++++ drivers/power/reset/pscrr.c | 408 ++++++++++++++++++++++++++ drivers/regulator/core.c | 6 + drivers/thermal/thermal_core.c | 3 + include/linux/nvmem-consumer.h | 21 ++ include/linux/power/power_on_reason.h | 3 + include/linux/pscrr.h | 89 ++++++ 10 files changed, 932 insertions(+) create mode 100644 drivers/power/reset/pscrr-nvmem.c create mode 100644 drivers/power/reset/pscrr.c create mode 100644 include/linux/pscrr.h --- 2.39.5