From nobody Thu Dec 25 13:08:38 2025 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 90760524A8 for ; Fri, 19 Jan 2024 13:25:38 +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=1705670739; cv=none; b=DThGHMWFi9SWB59cdbaVgrjGtgHC9cLm5lAjgz1mttTa22kSpI5JsES/UHj27qMpKsUFK3gp5NTC5E2OAFtEZMKDUTD1eZFvAn3H9gzACHo7co7TAyunnggKMgm8gjKsL4pK24hNG1SJSWizqxa0QqcfrXnxXFIrw+h5hhCdoDU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705670739; c=relaxed/simple; bh=y/hGCVajOvX8o6Efi9UdqxsGrdX7qFeQ/WFMS56UPW4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=aKSlxai51oZojz9oewuurJd4iMd1NXMdS5lAwpfzEc82LHoFKI06L1UfYztl0MrLONluEicQruiUcxZDKWV446L1fHEdjMhMDKK/GJfvHNt2Y6/dFgq3h1/BTfzl+etSDT7bROTbtvBN3QDIpEnG8PLlkRuF1BfHHfPh62596Mk= 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 1rQos7-00074H-C1; Fri, 19 Jan 2024 14:25:23 +0100 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rQos6-000viI-6t; Fri, 19 Jan 2024 14:25:22 +0100 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rQos6-00F981-0Q; Fri, 19 Jan 2024 14:25:22 +0100 From: Oleksij Rempel To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , 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, devicetree@vger.kernel.org, =?UTF-8?q?S=C3=B8ren=20Andersen?= Subject: [RFC PATCH v1 3/7] dt-bindings: power: reset: add bindings for NVMEM hardware storing PSCR Data Date: Fri, 19 Jan 2024 14:25:17 +0100 Message-Id: <20240119132521.3609945-4-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240119132521.3609945-1-o.rempel@pengutronix.de> References: <20240119132521.3609945-1-o.rempel@pengutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add device tree bindings that describe hardware implementations of Non-Volatile Memory (NVMEM) used for storing Power State Change Reasons (PS= CR). Signed-off-by: Oleksij Rempel --- .../bindings/power/reset/pscr-nvmem.yaml | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/pscr-nvme= m.yaml diff --git a/Documentation/devicetree/bindings/power/reset/pscr-nvmem.yaml = b/Documentation/devicetree/bindings/power/reset/pscr-nvmem.yaml new file mode 100644 index 000000000000..0642b470af41 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/pscr-nvmem.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/state-change/pscr-nvmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic NVMEM Power State Change Reason storage + +maintainers: + - Oleksij Rempel + +description: This binding describes the Non-Volatile Memory (NVMEM) hardwa= re + that stores Power State Change Reasons (PSCR). + +allOf: + - $ref: pse-controller.yaml# + +properties: + compatible: + const: pscr-nvmem + + nvmem-cells: + description: | + A phandle pointing to the nvmem-cells node where the power state cha= nge + reasons are stored. + maxItems: 1 + + nvmem-cell-names: + items: + - const: pscr + + pscr-unknown: + pscr-under-voltage: + pscr-over-current: + pscr-over-temperature: + +required: + - compatible + - nvmem-cells + - nvmem-cell-names + +additionalProperties: false + +examples: + - | + power-state-change-reason { + compatible =3D "pscr-nvmem"; + nvmem-cells =3D <&pscr_cell>; + nvmem-cell-names =3D "pscr"; + pscr-unknown =3D <1>; + pscr-under-voltage =3D <2>; + pscr-over-temperature =3D <3>; + }; +... --=20 2.39.2