From patchwork Wed Mar 25 06:34:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kucheria X-Patchwork-Id: 202857 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=-9.8 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,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 72476C54FCF for ; Wed, 25 Mar 2020 06:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4591B206F8 for ; Wed, 25 Mar 2020 06:35:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="ti42rp27" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727259AbgCYGfG (ORCPT ); Wed, 25 Mar 2020 02:35:06 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:46384 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726139AbgCYGfG (ORCPT ); Wed, 25 Mar 2020 02:35:06 -0400 Received: by mail-pf1-f193.google.com with SMTP id q3so540307pff.13 for ; Tue, 24 Mar 2020 23:35:04 -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=siPGNDe+AxSm5pKa/Er1n8oaxWLKO8D7N1OvXW7uO3Y=; b=ti42rp27v40CkiayUlokdDmBdSqvmyT2qfiSyfhGv4MdnJXxjQuSV1o5bNlrjvbK5N YxAGlcWm2ZnCzGiVmLqBbM++fTanIs1+jQQQPD6p4EgVL/RocrWKeWqNyFI4TW7k8z8L dSJrJ3j25FPhQZtIU6+Zhf7l02SG0IHDE4B+oaamj1ZXveCxgrk9nKAnckGiWA5H3wms gjjGLtMztVC5W4HuxjYGegw00mREWMavEkOcDzdZwXd++1Pn+hJww3w0ffPYD3ABS+zL eEf7gld8nKhNlwH97u5IcTk9MxM6dR6wBvCFRFWlXReyzS8Qxot5WE5/7StUa8yDPwoi Rgyw== 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=siPGNDe+AxSm5pKa/Er1n8oaxWLKO8D7N1OvXW7uO3Y=; b=BSJenSLbye9KAaEgNA12t+WOX/7lBmn8IVgqEQhHWINKu1txCWmFUFRxy4of4iF2oE 5xZ3TooJc4rm/YNJEyS3wwdviago3uJFaD8fgoCDwCkXGWy3KhGdZDNVO6IfxwudXtGX OkcgoN6LJ024JjCFVhVqj73Awcv1MBHaywt+lBi6GzlS+ROiVdCPWP8M0y/yIxEC0Vrw bCfjXBFUsD0T8x6RrK+vfSFh86lB1YLlJPHsfRc0QPb/U+MuIvJzcADVIzvKntxbuTT4 SNlfynye2JCHyKmlZlphdbaxRGYsjbNdu6fRCwGEGYpCn/T8UnjUWkq4310gpVK3mGRM MfKQ== X-Gm-Message-State: ANhLgQ0kIr91ZXfaIngudRxKZfKitBvk7gCQBUvMujUvPqM9Y5AlldE2 seFPV9BoA3UYyfRtnvvHMWJFTw== X-Google-Smtp-Source: ADFU+vuSlF1tCz/0gmNbN3lD4lor8uE7Ghbaw8r1wnCZY9m1lBu2LVeaoo33nM5iHrT/K9MmyeZGiA== X-Received: by 2002:a62:648f:: with SMTP id y137mr1832185pfb.199.1585118104267; Tue, 24 Mar 2020 23:35:04 -0700 (PDT) Received: from localhost ([103.195.202.71]) by smtp.gmail.com with ESMTPSA id 8sm17839049pfv.65.2020.03.24.23.35.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 23:35:03 -0700 (PDT) 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: [PATCH v3 1/3] dt-bindings: thermal: Add yaml bindings for thermal sensors Date: Wed, 25 Mar 2020 12:04:52 +0530 Message-Id: <93466e6c031c0084de09bd6b448556a6c5080880.1585117436.git.amit.kucheria@linaro.org> 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 --- .../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 000000000000..920ee7667591 --- /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>; + }; + }; +...