From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 584BF195386; Mon, 17 Jun 2024 12:19:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718626770; cv=none; b=CekYAptNcH6PQKpjBhk6qSyVdjZgaxoVRAqbVu7LxJO+6sno0xeYN+kT3bb/6sg4XzjMpjEyfGIqWNv2j1lzQQQYqBJYjCKHVw6aLiN1+RwVHTus427ajWVk0YaD/GtrRC3xDPPQ9AdTFvpbIuz14UUWWCHvVSZeJ5frj8A3Kwg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718626770; c=relaxed/simple; bh=h5PxWqH9ucbjKDnZEDd4HQzXa+YZ5VEbvvpQf2xrB/Q=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uPAIee1iFDuLa/EsTdq3WPoF6Y/zTKigUvRqAn8mDTMTN5FH4VlA4bidRq9z6tkmP4lL4Q/U8m2XHi0oaOlxGnjTlJOIWg3QyCLlLCJuHbftJudXxbs4ARZ9+oYrJ7jl5Esriw95K6C8frininahC25dTIQkNLu4z9qXBTq8Wiw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ewq8Bv1C; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ewq8Bv1C" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5ADDC4AF1C; Mon, 17 Jun 2024 12:19:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718626770; bh=h5PxWqH9ucbjKDnZEDd4HQzXa+YZ5VEbvvpQf2xrB/Q=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ewq8Bv1CxNEg660xFTVDJHCsLEQ4BcOJQq0fQamAppNKGo6HegEJ+k/u9422c0Xsm u++pwtpeA2gdWHAxjYYUqDdOau0UmWp6YHQcT+on1mKQcKrs1yLKix2XT5s8YDfUML yqM4JXnp+HCZHyttxNXiLm0jsRqsgj9gFh0N1vpwdUPPgdGBqoDCe50j8w0Z+M3Mzr OWiZ9d7v/hs4Kw1ZrxNugRT2jlSR2HON30ZvBKCC2jOiynuzu+XXkqVJ2BWQg4BOCt swWyAJ0s8NA3QyN9Q8h9NTiiJeP1mOeMfTwLKdDlduKFA46T8m/h/SVRvqsXSnKdKt +A8FWYSCBdYPQ== Message-ID: <8ab9535d-5f93-4e98-b2d8-d3f80a9c80fe@kernel.org> Date: Mon, 17 Jun 2024 14:19:22 +0200 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 1/3] dt-bindings: i2c: gpio: Add 'settle-time-us' property To: Bastien Curutchet , Peter Rosin , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Peter Korsgaard , Wolfram Sang Cc: linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Thomas Petazzoni , Herve Codina , Christopher Cordahi References: <20240617120818.81237-1-bastien.curutchet@bootlin.com> <20240617120818.81237-2-bastien.curutchet@bootlin.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 17/06/2024 14:08, Bastien Curutchet wrote: > I2C MUXes described by the i2c-gpio-mux sometimes need a significant > amount of time to switch from a bus to another. When a new bus is > selected, the first I2C transfer can fail if it occurs too early. There > is no way to describe this transition delay that has to be waited before > starting the first I2C transfer. > > Add a 'settle-time-us' property that indicates the delay to be > respected before doing the first i2c transfer. > > Signed-off-by: Bastien Curutchet Reviewed-by: Krzysztof Kozlowski Best regards, Krzysztof