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[147.75.80.249]) by mx.google.com with ESMTPS id 4fb4d7f45d1cf-57c5fff49b6si237397a12.9.2024.06.07.04.21.25 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Jun 2024 04:21:25 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-205899-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249; Authentication-Results: mx.google.com; dkim=pass header.i=@sang-engineering.com header.s=k1 header.b=esa6aFNX; arc=pass (i=1 spf=pass spfdomain=sang-engineering.com dkim=pass dkdomain=sang-engineering.com); spf=pass (google.com: domain of linux-kernel+bounces-205899-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) smtp.mailfrom="linux-kernel+bounces-205899-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id D09CF1F21C81 for ; Fri, 7 Jun 2024 11:21:24 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 06C2519753E; Fri, 7 Jun 2024 11:17:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="esa6aFNX" Received: from mail.zeus03.de (www.zeus03.de [194.117.254.33]) (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 C04D9196C9D for ; Fri, 7 Jun 2024 11:17:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717759060; cv=none; b=seTReU766XV+hiFPL3pBesH0cLguj9G9PzEMZvXuFc1VwO2C+d9DLALYfVZxtsfahi4C97n+A2ata+8pf4p757I3TYAt2aG2NsRXV3rm2hI62LfIFVlQDsJ7iPKFzmbw09ptwV56wJUF5yBzcxXRefwnX1TqaSQ8BsTmnwkpYmU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717759060; c=relaxed/simple; bh=s40ACXO4ZuXKNj0KnFQuKb88ljSQWqN5mWfzw780FP8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Tz5vWggkU9Q8to5BoVFa93n57hRCYw0EmGGZySNd43Hdb6/7iPf6ec9fY5BEAK9ejVhpQbkK1qUgR2fXvT1kgN5ydU+WMFy/LpK7agycbke3n4Z+Id+me7C5Nnk7ymiiuzMMr6DIbrSEpjCsWcQpc8W7vPrgpZed46snCxZTljo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=esa6aFNX; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type :content-transfer-encoding; s=k1; bh=m1KxijPx3KzjIwZYhj4lw3v7NJt XBikO2Jmfpzxazco=; b=esa6aFNX8QrWMKZ7W7mEtTJo+s7Vn62eqEYDvezdL8s gQQA+7fh5Qfr+yG0FA5g+3ymHivEIRiQaTmdBlznAxM7iyacwHCNnFPI5iLz8Sy1 QoyO62VABAKe6VbVG0E6uY4JJP8o77LbpEzizpeD1Sfxq4qC3HBNFBeGCRILpWgJ XwE3klOel9x8z8fS+OmsdQatOBcHXNmfFYKq7QhwpBVAPe+IM4s3/k9ynItWMUw7 NzQP7iun+OtfTSMzKxgSFkjIxiJd951NtJezQaS5sQE70UeNaBKMyBVcZQnMkb3n k3Fmsv8i/L1m264VQOTWAUm0wEWCkqdwdsnjnxRc4NA== Received: (qmail 3292232 invoked from network); 7 Jun 2024 13:17:34 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 7 Jun 2024 13:17:34 +0200 X-UD-Smtp-Session: l3s3148p1@ADJB8koaGrAgAwDPXzLGAH1eNELjOc3g From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: Easwar Hariharan , Andi Shyti , linux-doc@vger.kernel.org, Wolfram Sang , linux-kernel@vger.kernel.org Subject: [PATCH 3/5] docs: i2c: summary: update speed mode description Date: Fri, 7 Jun 2024 13:17:22 +0200 Message-ID: <20240607111726.12678-4-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240607111726.12678-1-wsa+renesas@sang-engineering.com> References: <20240607111726.12678-1-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fastest I2C mode is 5 MHz. Update the docs and reword the paragraph slightly. Signed-off-by: Wolfram Sang --- Documentation/i2c/summary.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/i2c/summary.rst b/Documentation/i2c/summary.rst index e3ab1d414014..a1e5c0715f8b 100644 --- a/Documentation/i2c/summary.rst +++ b/Documentation/i2c/summary.rst @@ -3,8 +3,8 @@ Introduction to I2C and SMBus ============================= I²C (pronounce: I squared C and written I2C in the kernel documentation) is -a protocol developed by Philips. It is a slow two-wire protocol (variable -speed, up to 400 kHz), with a high speed extension (3.4 MHz). It provides +a protocol developed by Philips. It is a two-wire protocol with variable +speed (typically up to 400 kHz, high speed modes up to 5 MHz). It provides an inexpensive bus for connecting many types of devices with infrequent or low bandwidth communications needs. I2C is widely used with embedded systems. Some systems use variants that don't meet branding requirements, -- 2.43.0