From patchwork Mon Jun 10 08:10:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 803086 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 A243557C8E for ; Mon, 10 Jun 2024 08:10:35 +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=1718007040; cv=none; b=huyJrS9ZyssHm5YAxL59GLgR1j/KVpJvZHymCGcHKt9V8qKBmQQi7KgdpysBJ6bL788S4TadCcY1Zig/FTEH7BRpp6NSr4JrdpiMhwIKldAuyU06A/p4E+H9dQX5PDIdKx0sIn38c0a2gDFX83ISxlvUI9qYOL5k/ggz481MAaQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718007040; c=relaxed/simple; bh=tp/NGE8RxyPHEtfvReImUJ2XG70OLA+d30WQHKc29AY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=bI4EE+wWfXvhpFCA5Cq/1CzVg5cZEIoXN/ra6XguRB90GBs3WEJ8nTqk5PPPs2fUgA7eZEzKbXQPjbSoCJrAoScz2YAALNeMEUbNh3dXR/kCZ0xBnYRBmT21D9IwzQPNIWdm2Fp0+v1Zp73xy/BRQxDU0tdidzpyt9prMUunkL4= 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=OfuLmN+Q; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="OfuLmN+Q" 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=CFQTXPUSMeT7AYVoruD7Npcs4kM +ge+9KCd3MJfEn/4=; b=OfuLmN+Q+W0aDkLcJCZ4mUk7jiEUuZ4JC+Z6tSZcVUX 2HmLO2jmontJoUW/aqt4hGsD3tajJViqRXKq3nrEcjhKz6GcGgahCc/UM5NZmPL4 xmqcAiB2NJbjSCJO8M/WUROWNmWh3rpt0IALcOTngo1zd5rwbLwIN5h8TwARIL+m IcMeH+qheGVLRiFVS5Z8C+lSSt2lVu1fGRlEzhWpt9B6Sfg9EAJXLLQLxJ1TtscE i2M/izCuQsEJKg1ZkkT6j0ynNEuCw2y4F5cJlvyD1dcUQYBhqD79cTXApX84SfQr mFdiJpONj6PFkxwwT2KHh1Y+q2aSob6+vRnOz021slQ== Received: (qmail 4192466 invoked from network); 10 Jun 2024 10:10:27 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 10 Jun 2024 10:10:27 +0200 X-UD-Smtp-Session: l3s3148p1@Yk6broQa0OYgAwDPXymAAHMyzy0c7Kdl 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 v2 3/6] docs: i2c: summary: update speed mode description Date: Mon, 10 Jun 2024 10:10:18 +0200 Message-ID: <20240610081023.8118-4-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240610081023.8118-1-wsa+renesas@sang-engineering.com> References: <20240610081023.8118-1-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Fastest I2C mode is 5 MHz. Update the docs and reword the paragraph slightly. Signed-off-by: Wolfram Sang Reviewed-by: Easwar Hariharan --- 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,