From patchwork Fri Jun 21 07:30:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 806430 Received: from mail.zeus03.de (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 E790116B3A5 for ; Fri, 21 Jun 2024 07:30:26 +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=1718955029; cv=none; b=o0b4PlPHjnP3UrAs7RNUD2s+VaG8rOUnRoxpxDwmIePmx8JY3Mt8lRHtlZGxij4PDQomnE/p+7vWGhcG3jorBIxMi1FULfDptf4wRzwF1Rc1KXJ0kptt8n5WERnhNbqiLUx4+dpLleCz8RlN4ZiiNawRi7/WT3yiZvKTS4rcc/g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718955029; c=relaxed/simple; bh=tp/NGE8RxyPHEtfvReImUJ2XG70OLA+d30WQHKc29AY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lX6lsCfFEFRvkGx/zVecNSeH+Bd9VIT0femCQe7IJXcqY3oyQDYiXxboP3mrVcwXr/XNWtqsTXzw0jaxtxy76wz8yDUs+TwaJAiXUPb/4oX1uo6YhOXAOhtowY8Ar9fqi0uKyp1Py7GIt2BSpuZXEajwIJHzSbWq1QdoP6qSI9Y= 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=mMdbDpmk; 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="mMdbDpmk" 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=mMdbDpmkdlmtdIGn7alJWBs9X8lSnmyMDx4wnFpSOv4 INM3gEzf5eKpf+2Q1nveHfi1wm/sgPMcMxlVMHHctox9jqRJYvrR4AWtxhfj0OpW EwJYgl8BTKHBiugU4Si/WV5f13g0jOFI+wKVYv2KLWlY8zM0y6sJEVQ/olHRBdHn V8ivlsHhAbGtuvWO0hwt7OxhX3yUEfMIiBTuSfIkodN3ZOQh+w4G89jAwLWkMAmk VdynEDw05kZLyG85ggoAXwQ9OYH8dRwam38LIXq0UCC40mDnwsd8en4fxp2tYj98 njKfMJqk8ap5Y3pg5NzV/2xZ0EFx9bblN8aatvGAAzQ== Received: (qmail 1279093 invoked from network); 21 Jun 2024 09:30:25 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 21 Jun 2024 09:30:25 +0200 X-UD-Smtp-Session: l3s3148p1@3l2jZ2Eb/I8gAwDPXzjQABqqX1QYyOSW From: Wolfram Sang To: linux-kernel@vger.kernel.org Cc: Andi Shyti , Easwar Hariharan , Wolfram Sang , linux-i2c@vger.kernel.org Subject: [PATCH v4 3/6] docs: i2c: summary: update speed mode description Date: Fri, 21 Jun 2024 09:30:10 +0200 Message-ID: <20240621073015.5443-4-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240621073015.5443-1-wsa+renesas@sang-engineering.com> References: <20240621073015.5443-1-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,