From patchwork Fri Apr 3 07:01:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kucheria X-Patchwork-Id: 1265893 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=TvfXeIBa; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48trTP6d94z9sSb for ; Fri, 3 Apr 2020 18:02:01 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388907AbgDCHCA (ORCPT ); Fri, 3 Apr 2020 03:02:00 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:41622 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730759AbgDCHCA (ORCPT ); Fri, 3 Apr 2020 03:02:00 -0400 Received: by mail-pl1-f195.google.com with SMTP id d24so2350810pll.8 for ; Fri, 03 Apr 2020 00:01:59 -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=6x3raJsWJrKBOs4KmDhl3DHzaY6d4WRAbl46YPhMahs=; b=TvfXeIBa30JUm4/yO+K2Y3WiNj+8gvaEw+eZ/ORQgbnxUPkb/bXsI/mMkjOJ0iMZap sjDs170Wt4iFY6vnpwFJk4ZlRjsgIpbgfS951YM5+hjnzTxaQLf4oEyEt7j5cD+hoIcA 8RnzuevlG/yQ6z/2g/AUIeCmb83XbuhhFDaAWdfBbL0MfwTBcr1efVYrZwzd4NJIO4Lq dVhaMsFnYrnC+iY5zvmtZTiUZp8c5WL5okSo7jnXcrqrJO3zUvWYmvXcr0eSE0NC39Ve BatwD+9kYwXyOgd0LYtTgTecHJEGesqRa/BjPyraJeYi6k+u4U9BPBIhk/E8L14s18L4 yhxg== 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=6x3raJsWJrKBOs4KmDhl3DHzaY6d4WRAbl46YPhMahs=; b=Dc/xzwf+o2j25CMMH8lFLxpVogICdWf9mqVdE+3cvtfHqDZVb/XEt4iw5UXHEo8SV4 9ZDHrsRkNF7Mb973s6MkbBPn16mMlH30g1QJGQBKFTaahbCvvAej+vXv0BZFOso+kstn DPUcvTexOcCeq1JFMNSA4O6ZkjJSt0YSP0Dv1OGyMuMs+kVAbvkm4IzGK2tvw/CFQazh eByrOe56kDBNa/aI5DD7B10lmlI0uf0kgITK4Sm40ROa5pSrLiIb+vi1ayM+1fD1dQ14 gOo6TL4zL7R9IadVtV5yunvulnIj2e+H7Ak3WITsJq/ZrBD5NBTvXuKlKWIMuk/YPCP9 4wnw== X-Gm-Message-State: AGi0PuYnUoZrJTDAPlhSBhFMuAMnVBKns5RG/QlhUpZ1i3w/S5nWFDLo xu0gPvYCFqIKWcblgP3xHxnJeg== X-Google-Smtp-Source: APiQypLH2xma3A/qCqnkzFp+pxTjvIbI9dx5dmYQp68ewi2c/AYzvdEjeRX97EIuL2QUocN7/X37PQ== X-Received: by 2002:a17:902:7c89:: with SMTP id y9mr6424581pll.49.1585897319187; Fri, 03 Apr 2020 00:01:59 -0700 (PDT) Received: from localhost ([45.127.44.53]) by smtp.gmail.com with ESMTPSA id a24sm5195500pfl.115.2020.04.03.00.01.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Apr 2020 00:01:58 -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 v5 1/3] dt-bindings: thermal: Add yaml bindings for thermal sensors Date: Fri, 3 Apr 2020 12:31:46 +0530 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@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..fcd25a0af38c9 --- /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 actively + - 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>; + }; + }; +...