From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,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 4B260C43334 for ; Sun, 2 Sep 2018 11:22:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96E6220658 for ; Sun, 2 Sep 2018 11:22:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96E6220658 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=i2se.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727059AbeIBPiX (ORCPT ); Sun, 2 Sep 2018 11:38:23 -0400 Received: from mout.kundenserver.de ([212.227.17.13]:34547 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726155AbeIBPiW (ORCPT ); Sun, 2 Sep 2018 11:38:22 -0400 Received: from localhost.localdomain ([37.4.249.97]) by mrelayeu.kundenserver.de (mreue101 [212.227.15.183]) with ESMTPSA (Nemesis) id 0Lto9d-1foGzV4Bin-011CkK; Sun, 02 Sep 2018 13:22:09 +0200 From: Stefan Wahren To: Jean Delvare , Guenter Roeck , Rob Herring , Mark Rutland Cc: Eric Anholt , Florian Fainelli , Phil Elwell , bcm-kernel-feedback-list@broadcom.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, Serge Schneider , Stefan Wahren Subject: [PATCH RFC 1/2] dt-bindings: hwmon: Add RPi PoE HAT documentation Date: Sun, 2 Sep 2018 13:20:50 +0200 Message-Id: <1535887251-29515-2-git-send-email-stefan.wahren@i2se.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1535887251-29515-1-git-send-email-stefan.wahren@i2se.com> References: <1535887251-29515-1-git-send-email-stefan.wahren@i2se.com> X-Provags-ID: V03:K1:Ku1nXBUEdOGG1UKn5ilmpK5YyJcJ6n2Hc1c/XEItZkVmCDRfl6M U3hkWviUQwLQ1PSS9/5ZZ30R2T/QcLK+2Mbk7cVjfR+Ymetu32LRYKyOEnC8QfnVY9zcARI rr2vL79LxzPR3mUQCOxjQJKxv1+mjhbN+tgIhxxgO2c/Zlbx+XwfBrEdlV8DD0qvl7aGveP 32EY8Bz0EqypGTTI4sqFA== X-UI-Out-Filterresults: notjunk:1;V01:K0:LSzvHORPa3Y=:X9dY7x8IgEfx4+R2si96BS /lIisIrvETvEpHpJgMnCVpbgO0iRNwD6U7sz+DAqMfz/Dt3WzO/1LN1YyAsC6+pg4pAZu+k5m GOttbF+ow+KEaFev/npqDoj/YPaknLC7yVDzdAsi676EceGa3rx+ZfbREbm7GkEAV7+TU2FpK 4aUDrqAhNa0tBd38HJ2LQWxlWZrZP9mK6/NYEkiBEwzV9wJhvTVwFJyYvcLzDA8SiIP7xGuEq I5vO8K3CoEUhhIa2GlHBbOG7dtpfWXLYlvHmWQRmy6PeO1IXSTmhJsbxb2SkkzEd5JsWvIogv gK3RGo1DSIplcCnwikSa7KQ1ON9cMKXX5w7woi8+kTiY7dx+a//MkWApzYxVZNTd6tdp5k6mT 3Aj5UCV78pLdPC3F3NtSBG2PpTg0DwQRFxkLuuj4KMAPIyip+cR/LJ2viqsup/e1co3z9qwii OhOVe1JdsF4BHWPc02lVuAvQ7IgG7QsY6uXfDqb7NuBbTK4fMJ2IttmuuZ2CNySvO9L9CpHRG K+yDPawBQADRs08CKHrW6kfjVfpC7CRmKPcTEnda3CQHA9Z5BMfLIqzPuBpy7f3oFKg+0L1PM H45gw/9HlAhgR06YTLEB2WRnrH9NtobLRaIEnRS2/Q51tz8zONcbMU0TzZolZ6Wy5HX/aQ3gi rVeU3/yo709xBzluPGfqafU92mpjS2+A4k2Baa76ORuwCmhKkNruva5hFSgyMQkOxwa0= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Serge Schneider This patch adds the binding for the fan on the Raspberry Pi Power over Ethernet HAT. Signed-off-by: Serge Schneider Signed-off-by: Stefan Wahren --- .../devicetree/bindings/hwmon/rpi-poe-fan.txt | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt diff --git a/Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt b/Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt new file mode 100644 index 0000000..c71f856 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt @@ -0,0 +1,55 @@ +Bindings for the Raspberry Pi PoE HAT fan + +Required properties: +- compatible : "raspberrypi,rpi-poe-fan" +- firmware : Reference to the RPi firmware device node +- pwms : the PWM that is used to control the PWM fan +- cooling-levels : PWM duty cycle values in a range from 0 to 255 + which correspond to thermal cooling states + +Example: + fan0: rpi-poe-fan@0 { + compatible = "raspberrypi,rpi-poe-fan"; + firmware = <&firmware>; + cooling-min-state = <0>; + cooling-max-state = <3>; + #cooling-cells = <2>; + cooling-levels = <0 50 150 255>; + status = "okay"; + }; + + thermal-zones { + cpu_thermal: cpu-thermal { + trips { + threshold: trip-point@0 { + temperature = <45000>; + hysteresis = <5000>; + type = "active"; + }; + target: trip-point@1 { + temperature = <50000>; + hysteresis = <2000>; + type = "active"; + }; + cpu_hot: cpu_hot@0 { + temperature = <55000>; + hysteresis = <2000>; + type = "active"; + }; + }; + cooling-maps { + map0 { + trip = <&threshold>; + cooling-device = <&fan0 0 1>; + }; + map1 { + trip = <&target>; + cooling-device = <&fan0 1 2>; + }; + map2 { + trip = <&cpu_hot>; + cooling-device = <&fan0 2 3>; + }; + }; + }; + }; -- 2.7.4