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[23.128.96.18]) by mx.google.com with ESMTP id o25si2406723edr.554.2020.12.04.00.46.24; Fri, 04 Dec 2020 00:46:46 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=HxSx5uVA; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729044AbgLDIoj (ORCPT + 99 others); Fri, 4 Dec 2020 03:44:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727056AbgLDIoj (ORCPT ); Fri, 4 Dec 2020 03:44:39 -0500 Received: from mail-lf1-x142.google.com (mail-lf1-x142.google.com [IPv6:2a00:1450:4864:20::142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94093C061A4F for ; Fri, 4 Dec 2020 00:43:58 -0800 (PST) Received: by mail-lf1-x142.google.com with SMTP id v14so6609791lfo.3 for ; Fri, 04 Dec 2020 00:43:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=KET1E+zuak3FlCY4zF7z/1ILHVvC2UNzSxg2qMKY1c0=; b=HxSx5uVAmmhLrfNvxVpDEfIm79FjWwE+/pIOwU9OCK4itu6RvC3I29vkt6XN+XnlQO 35qbSosF0096esxtPaOnQPzrtaaFB7ldlWwSM8k6l7VOnau3V36cTZM947r6Yy5jxp6j V/UltUuV1NUcCDh14YfCLi2AQKk8jemX3ddOis+X+igZvQK39fa643oOfJrBRyI7Cdbb paw/zZAVesnY5ei4at4uYjHLTYCaHAvyWaqAf0sGcjOPfNlnYoyO7Pn8kbXazuKA3Z28 OYVHXUhRguDKlf0ec/j9CbVkRgRlnWXbPEL1PlzphOt8/IImroG9s1ne8Axif63KivuQ WtEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=KET1E+zuak3FlCY4zF7z/1ILHVvC2UNzSxg2qMKY1c0=; b=krRe7MVCKGGv1l2jpgNwH99sQsVM2YXHaHVXujT4x/xIYIlNTEpuU1M+gPZJkTgowM wlXg0GpGUWS5WXcDkejmzE/ASB2LQxXLEybSkEIyCqZN0+SuGI6Owun+wNfNPmxf99gB 27PSs89+frwPeI5Mc9p3RMR2M9JsqlbyTEtHjhJd0vW9G3TY9h6BLlIQJX6T3ZQTaiXb PSeuefcvGZ0d0luptssErgw6uSBx/jqnYT0zXO2JAntVN0hAtZLYU3u/5tVuvZmXfIkG kwXKZ6cTaYZHSK5ir1nzIbHt7YBvUem4f/MNm3ZT2XhVoSr3GYuWGdMSWc1SaOd2cvcf K+VA== X-Gm-Message-State: AOAM530byj6PU7ZeY4kuLGdgvmuPA1kpQwO27BcRBTVxIpxd/B/Qxe6Y wAsf9F+ifq7g76rbJsNBvtiSUZZnX85a45716dPZ7Q== X-Received: by 2002:ac2:4308:: with SMTP id l8mr2768677lfh.260.1607071437123; Fri, 04 Dec 2020 00:43:57 -0800 (PST) MIME-Version: 1.0 References: <20201120093058.7248-1-zhiyong.tao@mediatek.com> <20201120093058.7248-2-zhiyong.tao@mediatek.com> In-Reply-To: <20201120093058.7248-2-zhiyong.tao@mediatek.com> From: Linus Walleij Date: Fri, 4 Dec 2020 09:43:46 +0100 Message-ID: Subject: Re: [PATCH] pinctrl: fix low level output voltage issue To: Zhiyong Tao Cc: Rob Herring , Mark Rutland , Matthias Brugger , Sean Wang , srv_heupstream@mediatek.com, hui.liu@mediatek.com, huang eddie , jg_poxu@mediatek.com, Biao Huang , Hongzhou Yang , Erin Lo , Sean Wang , seiya.wang@mediatek.com, sj.huang@mediatek.com, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "linux-kernel@vger.kernel.org" , Linux ARM , "moderated list:ARM/Mediatek SoC support" , "open list:GPIO SUBSYSTEM" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 20, 2020 at 10:31 AM Zhiyong Tao wrote: > This patch is used to fix low level output voltage issue. > A pin is changed from input pull-up to output high. > The Dout value of the pin is default as 0. > If we change the direction of the pin before the dout value of the pin, > It maybe produce a low level output voltage between "input pull-up" and > "output high". > > Signed-off-by: Zhiyong Tao Patch applied! Yours, Linus Walleij