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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 918F3C433B4 for ; Mon, 12 Apr 2021 13:29:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6965361288 for ; Mon, 12 Apr 2021 13:29:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241814AbhDLN3o (ORCPT ); Mon, 12 Apr 2021 09:29:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241773AbhDLN3d (ORCPT ); Mon, 12 Apr 2021 09:29:33 -0400 Received: from mail.pqgruber.com (mail.pqgruber.com [IPv6:2a05:d014:575:f70b:4f2c:8f1d:40c4:b13e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22196C06138C; Mon, 12 Apr 2021 06:29:14 -0700 (PDT) Received: from workstation.tuxnet (213-47-165-233.cable.dynamic.surfer.at [213.47.165.233]) by mail.pqgruber.com (Postfix) with ESMTPSA id 297C0C725CF; Mon, 12 Apr 2021 15:29:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pqgruber.com; s=mail; t=1618234153; bh=GlsSSVic5H44j5iEOaImBYJ/UJ6bO5xkDJrawlhvIZI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mvN0970p8X3QwcZRsq60A0d7TyjVYXHHjg+FbcqnLdRl43iH0AdkPH5390JC4z2q0 a6+Ng4ZgH7M3ln8f4fd9I4Z6EUnVqj3PHXfp5jsd8BTFmCpF0ujkwWjbtI1vVEEMDh GRhDKkkUJUpnOYz76ZokTbmu1z86FJCQwhG8PkJA= From: Clemens Gruber To: linux-pwm@vger.kernel.org Cc: Thierry Reding , Sven Van Asbroeck , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Clemens Gruber , Rob Herring Subject: [PATCH v8 4/8] dt-bindings: pwm: Support new PWM_USAGE_POWER flag Date: Mon, 12 Apr 2021 15:27:41 +0200 Message-Id: <20210412132745.76609-4-clemens.gruber@pqgruber.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210412132745.76609-1-clemens.gruber@pqgruber.com> References: <20210412132745.76609-1-clemens.gruber@pqgruber.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the flag and corresponding documentation for PWM_USAGE_POWER. Cc: Rob Herring Signed-off-by: Clemens Gruber --- Documentation/devicetree/bindings/pwm/pwm.txt | 3 +++ include/dt-bindings/pwm/pwm.h | 1 + 2 files changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/pwm/pwm.txt b/Documentation/devicetree/bindings/pwm/pwm.txt index 084886bd721e..fe3a28f887c0 100644 --- a/Documentation/devicetree/bindings/pwm/pwm.txt +++ b/Documentation/devicetree/bindings/pwm/pwm.txt @@ -46,6 +46,9 @@ period in nanoseconds. Optionally, the pwm-specifier can encode a number of flags (defined in ) in a third cell: - PWM_POLARITY_INVERTED: invert the PWM signal polarity +- PWM_USAGE_POWER: Only care about the power output of the signal. This + allows drivers (if supported) to optimize the signals, for example to + improve EMI and reduce current spikes. Example with optional PWM specifier for inverse polarity diff --git a/include/dt-bindings/pwm/pwm.h b/include/dt-bindings/pwm/pwm.h index ab9a077e3c7d..0d5a8f0c0035 100644 --- a/include/dt-bindings/pwm/pwm.h +++ b/include/dt-bindings/pwm/pwm.h @@ -11,5 +11,6 @@ #define _DT_BINDINGS_PWM_PWM_H #define PWM_POLARITY_INVERTED (1 << 0) +#define PWM_USAGE_POWER (1 << 1) #endif -- 2.31.1