From patchwork Mon Feb 21 22:51:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 544511 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 1D82EC433EF for ; Mon, 21 Feb 2022 22:51:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235804AbiBUWwK (ORCPT ); Mon, 21 Feb 2022 17:52:10 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:52618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231338AbiBUWwI (ORCPT ); Mon, 21 Feb 2022 17:52:08 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5AF34DEEB; Mon, 21 Feb 2022 14:51:44 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2965F139F; Mon, 21 Feb 2022 14:51:44 -0800 (PST) Received: from e123648.arm.com (unknown [10.57.9.194]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E7E8C3F66F; Mon, 21 Feb 2022 14:51:41 -0800 (PST) From: Lukasz Luba To: linux-kernel@vger.kernel.org Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, daniel.lezcano@linaro.org, nm@ti.com, sboyd@kernel.org, mka@chromium.org, dianders@chromium.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [RFC][PATCH 1/2] dt-bindings: power: add Energy Model bindings Date: Mon, 21 Feb 2022 22:51:30 +0000 Message-Id: <20220221225131.15836-2-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220221225131.15836-1-lukasz.luba@arm.com> References: <20220221225131.15836-1-lukasz.luba@arm.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add DT bindings for the Energy Model information. Signed-off-by: Lukasz Luba --- .../bindings/power/energy-model.yaml | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/energy-model.yaml diff --git a/Documentation/devicetree/bindings/power/energy-model.yaml b/Documentation/devicetree/bindings/power/energy-model.yaml new file mode 100644 index 000000000000..804a9b324925 --- /dev/null +++ b/Documentation/devicetree/bindings/power/energy-model.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/energy-model.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Energy Model Bindings + +maintainers: + - Lukasz Luba + +description: |+ + Devices work at specific performance states (frequencies). The power which + is used at a given performance state is an important information. A framework + which maintains this information is Energy Model. This document defines + bindings for these Energy Model performance states applicable across wide + range of devices. For illustration purpose, this document uses GPU as a device. + + This binding only supports frequency-power pairs. + +select: true + +properties: + operating-points: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: Frequency in kHz + - description: Power in uW + + +additionalProperties: true +examples: + { + gpu_energy_model: energy-model { + compatible = "energy-model"; + energy-model-entries = < + 200000 300000 + 297000 500000 + 400000 800000 + 500000 1400000 + 600000 2000000 + 800000 2800000 + >; + }; + }; + + &gpu { + energy-model = <&gpu_energy_model>; + }; +...