From patchwork Fri Jun 7 11:17:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 802727 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 C3560196D80 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="esa6aFNX" 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-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,