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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF92AC433F5 for ; Mon, 9 May 2022 11:12:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232489AbiEILQs (ORCPT ); Mon, 9 May 2022 07:16:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232320AbiEILQD (ORCPT ); Mon, 9 May 2022 07:16:03 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 967851A8E32; Mon, 9 May 2022 04:12:09 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id l18so26074327ejc.7; Mon, 09 May 2022 04:12:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=W/dDZTXvhevSA0CwXNeoVIZNKRdACOkTC7CvftF8ff4=; b=hXKQ4iPhqEuKSEkcznKWL5bTQuEvBLD8qMJKXAdJhjdH1Jic9CSNhB1Eg9oqprJ32/ u2sXG5GiPqCXo+JVf9HIPvgnlnW5jNThAK+2mvuoD/0hoWdwownTlRJ40GFBOGXrvlcP HxNMNQbeWLZJedRiOiPLzK5ZQGWaTiCh+OOKPvgjFjkNmS7k0H+qlevcVzjNyDRlPfXP mS/1fOkyR/y/h9Z4zZK3pLpUrFbd0x9ZLH6hzLUKDA6D2muVgTCt2UcbIfPq4+W9EpQP ubjPFJBoyTEy/o+MNaDwGJp8A9sL3waH6fhp3Nbvuvf38qRssQPnQQdMSmS0xuQKPJFK VahQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=W/dDZTXvhevSA0CwXNeoVIZNKRdACOkTC7CvftF8ff4=; b=xyMK/4n0NjnDLh9PR840faqHmPsjm/3Hx8vRLKPPs8RxMXTiI74YDtxQFNAkooBc0q Yk54AeNVQNqH3AUK3apZUKWI6q16pNV/Tnes2Lp7yQPP4cklkTcyEq+7UBxSJ2hN4h3S H73spGWsqrm0Qws2w6Urz4h2WdrYdWub4ZeyJfjrDn/iCVi3p+CQIimDn10gkPiJHqlL YW6EmhhFLdnH3Wz652N0cmofMbcC1oF2kslgkZYfbuIfwHWcqhefktW522XSDQMbWBOQ 1/n1RIA6BaDx1rMPzh5c5HaSqkvvaeKPdGphI1T5DLBk/fYIDO9bRQzqrOO5UtjlPOia R7yQ== X-Gm-Message-State: AOAM5330+DP8hkj+SboZ9qOdXiMIlGeU2n5zy08byGpD3+vifpwHgoiv OIoXR+j1ErJ5+mFoyoGT4nc= X-Google-Smtp-Source: ABdhPJyPZaWZhmEftwjIZNpESFxKpkKA8aFpNHgKO2srzDI3lGvnROkn2dDErjE2rjyHAthlHRo1AA== X-Received: by 2002:a17:906:559:b0:6f3:8ba6:39c8 with SMTP id k25-20020a170906055900b006f38ba639c8mr14168185eja.486.1652094728074; Mon, 09 May 2022 04:12:08 -0700 (PDT) Received: from linuxdev2.toradex.int (31-10-206-125.static.upc.ch. [31.10.206.125]) by smtp.gmail.com with ESMTPSA id c24-20020aa7c758000000b0042617ba63b4sm6075672eds.62.2022.05.09.04.12.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 May 2022 04:12:07 -0700 (PDT) From: Max Krummenacher To: max.krummenacher@toradex.com Cc: Fabio Estevam , Krzysztof Kozlowski , NXP Linux Team , Pengutronix Kernel Team , Rob Herring , Sascha Hauer , Shawn Guo , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 3/3] ARM: dts: imx6qdl-colibri: backlight pwm: Simplify inverted backlight Date: Mon, 9 May 2022 13:11:26 +0200 Message-Id: <20220509111126.7032-4-max.oss.09@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220509111126.7032-1-max.oss.09@gmail.com> References: <20220509111126.7032-1-max.oss.09@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Max Krummenacher Set #pwm-cells to the default 3 to gain access to the parameter which allows inverting the PWM signal. This is useful to specify a backlight which has its highest brightness at 0. Also adapt the brightness steps as the backlight doesn't light up for very low duty cycles. Signed-off-by: Max Krummenacher --- arch/arm/boot/dts/imx6qdl-colibri.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi index f0908b530f86..023e76215064 100644 --- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi +++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi @@ -6,6 +6,7 @@ */ #include +#include / { model = "Toradex Colibri iMX6DL/S Module"; @@ -13,13 +14,13 @@ backlight: backlight { compatible = "pwm-backlight"; - brightness-levels = <0 127 191 223 239 247 251 255>; - default-brightness-level = <1>; + brightness-levels = <0 45 63 88 119 158 203 255>; + default-brightness-level = <4>; enable-gpios = <&gpio3 26 GPIO_ACTIVE_HIGH>; /* Colibri BL_ON */ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_gpio_bl_on>; power-supply = <®_module_3v3>; - pwms = <&pwm3 0 5000000>; + pwms = <&pwm3 0 5000000 PWM_POLARITY_INVERTED>; status = "disabled"; }; @@ -620,7 +621,6 @@ /* Colibri PWM */ &pwm3 { - #pwm-cells = <2>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm3>; status = "disabled"; -- 2.20.1