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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 72A63C4360F for ; Mon, 25 Feb 2019 16:00:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D4B920842 for ; Mon, 25 Feb 2019 16:00:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728027AbfBYQAu (ORCPT ); Mon, 25 Feb 2019 11:00:50 -0500 Received: from mout.kundenserver.de ([212.227.126.131]:60233 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727684AbfBYQAt (ORCPT ); Mon, 25 Feb 2019 11:00:49 -0500 Received: from stefan-Vostro-260.fritz.box ([109.104.53.79]) by mrelayeu.kundenserver.de (mreue010 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M7Jj2-1guzoG1ske-007kBs; Mon, 25 Feb 2019 16:59:56 +0100 From: Stefan Wahren To: Kamil Debski , Bartlomiej Zolnierkiewicz , Jean Delvare , Guenter Roeck , Rob Herring , Mark Rutland Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Stefan Wahren Subject: [PATCH RFC V2 1/3] dt-bindings: hwmon: Add tachometer interrupt to pwm-fan Date: Mon, 25 Feb 2019 16:59:17 +0100 Message-Id: <1551110359-19860-2-git-send-email-stefan.wahren@i2se.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551110359-19860-1-git-send-email-stefan.wahren@i2se.com> References: <1551110359-19860-1-git-send-email-stefan.wahren@i2se.com> X-Provags-ID: V03:K1:eQ6be8+xN/Kp+WdWtHteev5zaicZG8qo2dkAXGE1IW8/s/jeT5h 9yvyLGBTulrXXKI0eBgBGkQtyhZM2cC7e2r327/hYsvalgR7DrwoQldzuGF3g8B1uPIbZUs vvvjZE13Ws94I8YsZqOphX1wh/Qf8pd1W6LL38iUGujbal9CDy2VN1yQc6Wixd7kbsYVwk3 uL5iHge0hZhwktbXSWGwg== X-UI-Out-Filterresults: notjunk:1;V03:K0:VNLDuthaZDg=:1Ek/LC5E/KdBMYdlGAmMb6 sQ3MKCbop9trcckHGb97Aop6PehW0jNFRXlhj4se+7jv3S6Gw5+gbYBMzc9tuyAccPvKKcUPa UzumIFE3SR6N/z/tTMhh8DcebzSo89pZ9gDOhevHnrA5K/NHPEaPNubbsPwzZP7psfCYGFHLC rzCAaTcMu6vgs9iGGAnmHnvfDDnz1mUjd6VGh97PqXZR18j4LtC45+URGQuKy8HPBHSKkx+t2 fQNrwly5kZSx8OJx52tUdLRya1goIKflgUqd7esN1D+PFEVqJGqkavN3DT0zW9bUOcr7/15ry /oVSJgbxFBMhTelP891lvrxs5oLiRs+XkmaUYZBVaZjB5s6TpTWRvLyeNrUY0xrXv4m+JWvzq tTTT1r4YbUpcg8XPJtZrzEYlGJsDg4wjglaAfxJDH1T4pynbsCgVP+96il3XsKRKzvnudqn0a BoBEmwJGwrCo9m/n7DGAvSSvMHRBD5z5gMgbWSzleqYV4R4x4yKEXQsKYwqedeDuLo8TOOhWe fXWP7UIyXZjkXTiWOmydeqxkuMkrIr+MeTSoB3+yazOk+9sDRiIaJ0DqEdBl0RTYfljdL5JkE h3GM0cNHx4fcQo2+zaeqsagv0XFbAUXw7GEcaVQMxHpqxNSIj7di1+YEK6f4R8jDwLvexbyon D66f2s1Fk3zmN50ZwTrvCKyf7NAsLH8SdHX+Wlqj0smkhEtOKFAe0UlqZKsq4PLAJvXNi2O/R b4hDus7oWE/iOSb5YusX65b66tgBBFIVqGaC7excUv9xw1E5/2kg0Rn1xIc= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds the tachometer interrupt to the pwm-fan binding, which is necessary for RPM support. Signed-off-by: Stefan Wahren --- Documentation/devicetree/bindings/hwmon/pwm-fan.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt index 49ca5d8..7d09623 100644 --- a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt +++ b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt @@ -8,6 +8,14 @@ Required properties: Optional properties: - fan-supply : phandle to the regulator that provides power to the fan +- interrupts : This contains a single interrupt specifier which + describes the tachometer output of the fan as an + interrupt source. The output signal must generate a + defined number of interrupts per fan revolution, which + require that it must be self resetting edge interrupts. + See interrupt-controller/interrupts.txt for the format. +- interrupt-ratio : defines the ratio interrupts per fan revolution as an + integer (default is 2 interrupts per revolution) Example: fan0: pwm-fan { @@ -38,3 +46,14 @@ Example: }; }; }; + +Example 2: + fan0: pwm-fan { + fan0: pwm-fan { + compatible = "pwm-fan"; + pwms = <&pwm 0 40000 0>; + fan-supply = <®_fan>; + interrupt-parent = <&gpio5>; + interrupts = <1 IRQ_TYPE_EDGE_FALLING>; + interrupt-ratio = <2>; + }; -- 2.7.4