From patchwork Mon Jul 11 20:33:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 589489 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AE8CCCA47B for ; Mon, 11 Jul 2022 20:34:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229934AbiGKUeB (ORCPT ); Mon, 11 Jul 2022 16:34:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230437AbiGKUd5 (ORCPT ); Mon, 11 Jul 2022 16:33:57 -0400 Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30B6C4D171; Mon, 11 Jul 2022 13:33:56 -0700 (PDT) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id ACBFA4185A; Tue, 12 Jul 2022 01:33:50 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1657571631; bh=MaueoK+Vek+754sVEgpdzODSHjawfPvA50v4dhfN/Dw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hUyN2ykOv//CKv/tJeOSENlK89XZ7w6gIiozDhGnYV0lANmrH71OAaDBEouff89a3 OEQEQk/j8KCqXLvEZcewNpkvCuI6tlkfuHuPk3j96rP3ZQ0UkjPPokWlfR/iCrJacX 3H5HmgUiHArB3ktdg6qz5qQ3yju1zvj6fiRvlqGnu+mKzEzPgONgdK6ttTx0BZxBga LLmbtSfxzI6whgbjSkevVcGkuhyXqeCxdBRKkSRsqk50Jx+DfQxZnVJUL3/Vgpaw9t jRYNbbuJKsFHAcjpYq67RLsQm7E3vPFWg/ykfXRIORgHX/ZBojaJmoKjCt5ZunTz6A nYAb/EN11BkPA== From: Nikita Travkin To: thierry.reding@gmail.com, lee.jones@linaro.org Cc: u.kleine-koenig@pengutronix.de, robh+dt@kernel.org, sboyd@kernel.org, krzk@kernel.org, linus.walleij@linaro.org, masneyb@onstation.org, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Nikita Travkin , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v9 1/2] dt-bindings: pwm: Document clk based PWM controller Date: Tue, 12 Jul 2022 01:33:39 +0500 Message-Id: <20220711203340.648007-2-nikita@trvn.ru> In-Reply-To: <20220711203340.648007-1-nikita@trvn.ru> References: <20220711203340.648007-1-nikita@trvn.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add YAML devicetree binding for clk based PWM controller Reviewed-by: Krzysztof Kozlowski Reviewed-by: Rob Herring Signed-off-by: Nikita Travkin --- Changes in v2: - fix the file name. Changes in v4: - Use generic node name in the dt bindings example. Changes in v5: - make compatible required --- .../devicetree/bindings/pwm/clk-pwm.yaml | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/clk-pwm.yaml diff --git a/Documentation/devicetree/bindings/pwm/clk-pwm.yaml b/Documentation/devicetree/bindings/pwm/clk-pwm.yaml new file mode 100644 index 000000000000..ec1768291503 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/clk-pwm.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/clk-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Clock based PWM controller + +maintainers: + - Nikita Travkin + +description: | + Some systems have clocks that can be exposed to external devices. + (e.g. by muxing them to GPIO pins) + It's often possible to control duty-cycle of such clocks which makes them + suitable for generating PWM signal. + +allOf: + - $ref: pwm.yaml# + +properties: + compatible: + const: clk-pwm + + clocks: + description: Clock used to generate the signal. + maxItems: 1 + + "#pwm-cells": + const: 2 + +unevaluatedProperties: false + +required: + - compatible + - clocks + +examples: + - | + pwm { + compatible = "clk-pwm"; + #pwm-cells = <2>; + clocks = <&gcc 0>; + pinctrl-names = "default"; + pinctrl-0 = <&pwm_clk_flash_default>; + };