From patchwork Fri Oct 9 15:30:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11826249 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 CB43A1744 for ; Fri, 9 Oct 2020 15:32:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 98F8D206B2 for ; Fri, 9 Oct 2020 15:32:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hTqS0sPM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 98F8D206B2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=M9gKaDaHnv01P8pTCgLWl2YxwS9L2uGuPAX5cCQG1h8=; b=hTqS0sPMgQfCvkvE2LHPh6oxH UeSR+EmfnkGWcZ2S+qWIaOukhOLLV7JBvM6OPytunwPnVVXNKoHUE/ooZo/SD+VsSQwRlg2acr9uQ sEg8hj3fFEW/m6Mg4TiZHoSBlEc4+yH1g9LnJY7cfskfhjeSt+y+I9zKUPOL5hmxxIPfuZSft+Xxl p4IGPsNApjNhsrKo6KsJhIHKD1g/OGu932qA4/JCl0490921RWujKEIfkJJmkRnmj3RhQaa2RJviq /eOrxjpFzHcmXv2f1ybPjR320hTjmJ9BhYmAYm9Zi7skgIOwIz9Geggwsc+xn6n+0RVsuA7jvuS4O z6DFadEGQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQuM7-0005ZO-Lt; Fri, 09 Oct 2020 15:30:51 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQuM4-0005Xz-NG; Fri, 09 Oct 2020 15:30:49 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B52CAAD63; Fri, 9 Oct 2020 15:30:47 +0000 (UTC) From: Nicolas Saenz Julienne To: f.fainelli@gmail.com, linux@roeck-us.net, jdelvare@suse.com, wahrenst@gmx.net, =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Eric Anholt , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-pwm@vger.kernel.org, Ray Jui , Scott Branden , Nicolas Saenz Julienne Subject: [PATCH 1/3] dt-bindings: pwm: Add binding for RPi firmware PWM bus Date: Fri, 9 Oct 2020 17:30:28 +0200 Message-Id: <20201009153031.986-2-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201009153031.986-1-nsaenzjulienne@suse.de> References: <20201009153031.986-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201009_113048_889311_6E0135D6 X-CRM114-Status: GOOD ( 16.66 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [195.135.220.15 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [195.135.220.15 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-hwmon@vger.kernel.org, robh+dt@kernel.org, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The PWM bus controlling the fan in RPi's official PoE hat can only be controlled by the board's co-processor. Signed-off-by: Nicolas Saenz Julienne --- .../arm/bcm/raspberrypi,bcm2835-firmware.yaml | 21 +++++++++++++++++++ .../pwm/raspberrypi,firmware-pwm.h | 13 ++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 include/dt-bindings/pwm/raspberrypi,firmware-pwm.h diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml index a2c63c8b1d10..dcaf00e8602e 100644 --- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml +++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml @@ -64,6 +64,22 @@ properties: - compatible - "#reset-cells" + pwm: + type: object + + properties: + compatible: + const: raspberrypi,firmware-pwm + + "#pwm-cells": + const: 1 + description: > + The argument is the PWM bus number. + + required: + - compatible + - "#pwm-cells" + additionalProperties: false required: @@ -87,5 +103,10 @@ examples: compatible = "raspberrypi,firmware-reset"; #reset-cells = <1>; }; + + pwm: pwm { + compatible = "raspberrypi,firmware-pwm"; + #pwm-cells = <1>; + }; }; ... diff --git a/include/dt-bindings/pwm/raspberrypi,firmware-pwm.h b/include/dt-bindings/pwm/raspberrypi,firmware-pwm.h new file mode 100644 index 000000000000..27c5ce68847b --- /dev/null +++ b/include/dt-bindings/pwm/raspberrypi,firmware-pwm.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2020 Nicolas Saenz Julienne + * Author: Nicolas Saenz Julienne + */ + +#ifndef _DT_BINDINGS_RASPBERRYPI_FIRMWARE_PWM_H +#define _DT_BINDINGS_RASPBERRYPI_FIRMWARE_PWM_H + +#define RASPBERRYPI_FIRMWARE_PWM_POE 0 +#define RASPBERRYPI_FIRMWARE_PWM_NUM 1 + +#endif