From patchwork Mon Feb 24 07:25:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kucheria X-Patchwork-Id: 190250 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77E9BC11D24 for ; Mon, 24 Feb 2020 07:25:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4B8A520870 for ; Mon, 24 Feb 2020 07:25:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="bUS+25+8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727265AbgBXHZr (ORCPT ); Mon, 24 Feb 2020 02:25:47 -0500 Received: from mail-pj1-f67.google.com ([209.85.216.67]:35638 "EHLO mail-pj1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726709AbgBXHZr (ORCPT ); Mon, 24 Feb 2020 02:25:47 -0500 Received: by mail-pj1-f67.google.com with SMTP id q39so3774774pjc.0 for ; Sun, 23 Feb 2020 23:25:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=hYyHTVUj+djldG9B+Pq0Lr60baNa5Q3EKWfIUDYwvYI=; b=bUS+25+867b++YN2nd8IBK/JhTNAEBklHGTNWPbyVyvNJQFtDBeBl9SuLqlQRBUqtZ KO4AgOX2vqG1ZV6GxAhNvLgCu/yGMeqlKGIGT/Ityt7Gp1IBonk5HgK73dU3vhZFtg+V s9qhgJSIOqVxd9J4M2TFCpQ1mMtZcOKLmh99rI8GwezuH93CfAcKNTuqgDfeRMdfRkbo 0ZHj9lhAmuDJ9wxclGgcVg/QLC/K2ZLeeqr1RVItZX1hI9Oo6yWY1mj8qjCvW5Fp5fSE YYkRLwBbjLGUcw22BNASU3qR3rsNC91Sodgo7rsXS7pROp4MDqRuI2JcneHqGa9EO2cs ++kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=hYyHTVUj+djldG9B+Pq0Lr60baNa5Q3EKWfIUDYwvYI=; b=XCeiZrDgV+IYm1JAZtxx45FQ5EmVF+cI5JKslGKXhVEHKsdjOs5zWi8M9yZZYmMA4m X65t7fSo6T8rvLuKwo2LacLLIHmwZl2f/uOp3VaK61pL+uWnq3PAbVlICIbjaGYrJXEQ 7hL7wclu/LieDqGiL4fBE3czY/e/yhLNKTdqp5LkbV8TTXP5+dt27wl/EcGWzJRQxaUU FBTcNi3EtE2bqwCevD41gF5zb07Hh5F1ZN7hKpWQXc58L6ZaitQJRto2zkyW3ghR8k7l oKR1jrlGfFa98/XH2xUSyEpMs+Eow2jNGQ9Z7aSL0JFeZauszXIjIeJM7nSpTSLyMc+i 6nrg== X-Gm-Message-State: APjAAAUl4CdMrwrU/TW42FzvbpvtbHbUDqxar7W9nvfXCN25EWGDKGum VwnYC23zCKngIH5nQ4sPV8eJYw== X-Google-Smtp-Source: APXvYqzg0kKF8BTBovQmtFgqeEY99Z43OtEGVmVRlMjzR8mFQBD7xUq/zK7JydZGK348jpC4EQTGpw== X-Received: by 2002:a17:90a:cc16:: with SMTP id b22mr18402691pju.65.1582529146395; Sun, 23 Feb 2020 23:25:46 -0800 (PST) Received: from localhost ([45.127.44.57]) by smtp.gmail.com with ESMTPSA id e6sm11360524pfh.32.2020.02.23.23.25.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Feb 2020 23:25:45 -0800 (PST) From: Amit Kucheria To: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, swboyd@chromium.org, mka@chromium.org, daniel.lezcano@linaro.org, Amit Kucheria , Zhang Rui Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org Subject: [RFC PATCH v1 1/3] dt-bindings: thermal: Add yaml bindings for thermal sensors Date: Mon, 24 Feb 2020 12:55:35 +0530 Message-Id: <11f9128efef92b427d93a563d5b53b62c4c01888.1582528977.git.amit.kucheria@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org As part of moving the thermal bindings to YAML, split it up into 3 bindings: thermal sensors, cooling devices and thermal zones. The property #thermal-sensor-cells is required in each device that acts as a thermal sensor. It is used to uniquely identify the instance of the thermal sensor inside the system. Signed-off-by: Amit Kucheria --- .../bindings/thermal/thermal-sensor.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/thermal-sensor.yaml diff --git a/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml b/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml new file mode 100644 index 000000000000..ac32f54f2f98 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0 OR MIT) +# Copyright 2020 Linaro Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/thermal-sensor.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Thermal sensor binding + +maintainers: + - Amit Kucheria + +description: | + Thermal management is achieved in devicetree by describing the sensor hardware + and the software abstraction of thermal zones required to take appropriate + action to mitigate thermal overloads. + + The following node types are used to completely describe a thermal management + system in devicetree: + - thermal-sensor: device that measures temperature, has SoC-specific bindings + - cooling-device: device used to dissipate heat either passively or artively + - thermal-zones: a container of the following node types used to describe all + thermal data for the platform + + This binding describes the thermal-sensor. + + Thermal sensor devices provide temperature sensing capabilities on thermal + zones. Typical devices are I2C ADC converters and bandgaps. Thermal sensor + devices may control one or more internal sensors. + +properties: + "#thermal-sensor-cells": + description: + Used to uniquely identify a thermal sensor instance within an IC. Will be + 0 on sensor nodes with only a single sensor and at least 1 on nodes + containing several internal sensors. + enum: [0, 1] + +examples: + - | + #include + + // Example 1: SDM845 TSENS + soc: soc@0 { + #address-cells = <2>; + #size-cells = <2>; + + /* ... */ + + tsens0: thermal-sensor@c263000 { + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; + reg = <0 0x0c263000 0 0x1ff>, /* TM */ + <0 0x0c222000 0 0x1ff>; /* SROT */ + #qcom,sensors = <13>; + interrupts = ; + interrupt-names = "uplow"; + #thermal-sensor-cells = <1>; + }; + + tsens1: thermal-sensor@c265000 { + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2"; + reg = <0 0x0c265000 0 0x1ff>, /* TM */ + <0 0x0c223000 0 0x1ff>; /* SROT */ + #qcom,sensors = <8>; + interrupts = ; + interrupt-names = "uplow"; + #thermal-sensor-cells = <1>; + }; + }; +...