From patchwork Wed Apr 1 11:15:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kucheria X-Patchwork-Id: 11468975 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3BF9614B4 for ; Wed, 1 Apr 2020 11:15:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E11520776 for ; Wed, 1 Apr 2020 11:15:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="FbdDNrTR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732399AbgDALPj (ORCPT ); Wed, 1 Apr 2020 07:15:39 -0400 Received: from mail-pj1-f65.google.com ([209.85.216.65]:36249 "EHLO mail-pj1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732121AbgDALPj (ORCPT ); Wed, 1 Apr 2020 07:15:39 -0400 Received: by mail-pj1-f65.google.com with SMTP id nu11so2560412pjb.1 for ; Wed, 01 Apr 2020 04:15:38 -0700 (PDT) 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=V5DAow7umIWoAdNuh/e+goWjtgRcJmCEdNFZmOOCst4=; b=FbdDNrTR1rEsjP1N92wJt0BbZU1h1vMbPUnnk+XeEz8HfNkMz4RdOeztgYLcCCLCk8 V7k223ZleYtO9TFWzl8SeoGowRT8VfOs348F7CwQi5LzFlw7B1LqcpEMWNIXnc/HLJL6 3Or/vPnKqbpAeluNFB+zBYGLl4Nv6lvZjkUiMq998r/UqMiAbqXy2HgU6p//pYSwzIEI GvcJlmdwd6/ceZDUY5TpY7OmiQToa/sOHgTBLTP6f8zCrQlN+R93Smsf/tJJQSNqUdMR zZV1wxa6H/+SZ2p5NukrvN348AeC97Av2V5C+6RPf+vttb7ZSw8T8J9d01mRSUx+dLx3 XmNg== 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=V5DAow7umIWoAdNuh/e+goWjtgRcJmCEdNFZmOOCst4=; b=XHdprw86PxixJRlj0UdaGjV3Q2FQYZbGZsAntw9GuBopQKLyUGQ6m/5bs3VZvQaCd5 ojJV5RHMJlGQ8IYa/+vUH5h5uuZgJzVCdpcwUnNu+0UwIYnLuvdhc+BWumgxjUZQAVRD kzGFwFvAMKqLVumUJm+u5XKv6YWf4sIwkvH+cjjChUsrzVBS821YDWr+gHct1Mxg24+s V6N/5wlg44VTKYEhlfND9YyiBZ/7B3Q8W5mlpydV3Rioa4QRHQHJJzBBNv/XDCzEj/Kh DMOl/myeXcl61EZUoy7Z/sObe/2RAx82dACH1Cdg14tkZzCufQ4RbdBM262Wmk2riC/r JfVQ== X-Gm-Message-State: ANhLgQ1U7fG4uzzN6lM3YGSyF+ui7DGRqtRxEHtvWCIsBzVuO3JKyTM4 /Sl6jrKEdhnEDnNRJs+UyujUzA== X-Google-Smtp-Source: ADFU+vvVBGvIhVhr1zs31Lyb+iHUNpWCBDeKn6KRUgdZt8UMivaSHVOyGOX91na4FYx2WR1Ob70hjg== X-Received: by 2002:a17:902:fe06:: with SMTP id g6mr22139809plj.263.1585739737563; Wed, 01 Apr 2020 04:15:37 -0700 (PDT) Received: from localhost ([103.195.202.232]) by smtp.gmail.com with ESMTPSA id go9sm1388404pjb.27.2020.04.01.04.15.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Apr 2020 04:15:36 -0700 (PDT) From: Amit Kucheria To: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, swboyd@chromium.org, lukasz.luba@arm.com, mka@chromium.org, daniel.lezcano@linaro.org, Amit Kucheria , Zhang Rui Cc: Rob Herring , linux-pm@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v4 1/3] dt-bindings: thermal: Add yaml bindings for thermal sensors Date: Wed, 1 Apr 2020 16:45:25 +0530 Message-Id: <146b5dfebf23321c1eed8190ada957e2264ffe65.1585738725.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 Reviewed-by: Rob Herring Reviewed-by: Lukasz Luba --- .../bindings/thermal/thermal-sensor.yaml | 72 +++++++++++++++++++ 1 file changed, 72 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 0000000000000..920ee7667591d --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/thermal-sensor.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0) +# 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", "critical"; + #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", "critical"; + #thermal-sensor-cells = <1>; + }; + }; +...