Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp3478236ybl; Tue, 21 Jan 2020 01:19:04 -0800 (PST) X-Google-Smtp-Source: APXvYqzW9q3zpc5keKCyjwNNHU9K9zRpJ9hpB0Fuh1kODCzg8U/S1xyzz8BE7iXSc0/d3hgnk8gW X-Received: by 2002:a9d:6a47:: with SMTP id h7mr3076496otn.244.1579598344339; Tue, 21 Jan 2020 01:19:04 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1579598344; cv=none; d=google.com; s=arc-20160816; b=kYekiP6YkIyxkNnGnN2pcwJDfUpwxkG/iJgewDsi3D7gtzt5oSmFDTQIpOeQlya2xg Y5pAnwgbWDZnv/d9lGxn+jhvgz8EqZ6DNjsacnYg6Lo/jb9BSHYzF7hIUdloO/XJqWG2 6AM08RVS0H1mEE5F8oo0JKV8/S0n8efFVAkTSyOZvI/UjK+tD9su57X3tNhWHlh1J9ox Ru81Eefj2WUxf4nMXdhG71oU4KMF2tWFyLR8ytTGxPCjYYMOrr1sSAWouIg4352k9VKy muvkpAs5gna8J5JBaAzvEc3GFQ2yGh6EMszDNRy7+8CDNtZVIydpbCtQY8lO5a2bljP3 7YDA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :organization:references:in-reply-to:message-id:subject:cc:to:from :date; bh=/kdYgYaAtSpoGMDTr1E8D3qv0IUYajdKDqJjzoY9lOw=; b=p5tiAbe9O9FDKOlzXYfzsFdHqkIg5QLzBoBNMtVkl+Ia94zWBopId0k61g5kTA+oN5 W0DzPvkC3pLsAR+pyVK6KD90C/D8KTUErWlBttx6/BZ8ktwydmcKGBXsJASZ3MFZcUy7 xKpfNhGA4fywHITVPbJmqTzqlXZ5+nQZzTI4oZtlLz+rrMwVDbB6oXEWa++HQFg/hnUO 6nPEGuPfMvvcuOG/aRt0K0eeHL/BAgAyOfnQirS50FXqnt1sLX5zEnQEGUcAOZtC/roy xrW27AhjyIswx/8j1UsHN0eO7FpAFPpNCSPo1idH7ASdXp9z1LIE6Lkc47sZYoCdv0Xg up4A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t82si19802060oif.45.2020.01.21.01.18.51; Tue, 21 Jan 2020 01:19:04 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729076AbgAUJQq (ORCPT + 99 others); Tue, 21 Jan 2020 04:16:46 -0500 Received: from mx2.suse.de ([195.135.220.15]:59126 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725789AbgAUJQq (ORCPT ); Tue, 21 Jan 2020 04:16:46 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 198EABB09; Tue, 21 Jan 2020 09:16:44 +0000 (UTC) Date: Tue, 21 Jan 2020 10:16:37 +0100 From: Jean Delvare To: Luca Ceresoli Cc: linux-doc@vger.kernel.org, linux-i2c@vger.kernel.org, Wolfram Sang , Peter Rosin , linux-kernel@vger.kernel.org Subject: Re: [PATCH 19/26] docs: i2c: smbus-protocol: improve I2C Block transactions description Message-ID: <20200121101637.07513417@endymion> In-Reply-To: <20200105225012.11701-19-luca@lucaceresoli.net> References: <20200105224006.10321-1-luca@lucaceresoli.net> <20200105225012.11701-1-luca@lucaceresoli.net> <20200105225012.11701-19-luca@lucaceresoli.net> Organization: SUSE Linux X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 5 Jan 2020 23:50:05 +0100, Luca Ceresoli wrote: > Clarify from the beginning what these transactions are, and specifically > how they differ from the SMBus counterparts, i.e. the lack of a Count byte. > > Signed-off-by: Luca Ceresoli > --- > Documentation/i2c/smbus-protocol.rst | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/Documentation/i2c/smbus-protocol.rst b/Documentation/i2c/smbus-protocol.rst > index 7350e4b2c2fa..0edaf6069ac1 100644 > --- a/Documentation/i2c/smbus-protocol.rst > +++ b/Documentation/i2c/smbus-protocol.rst > @@ -282,9 +282,10 @@ This is implemented the following way in the Linux kernel: > I2C Block Transactions > ====================== > > -The following I2C block transactions are supported by the > -SMBus layer and are described here for completeness. > -They are *NOT* defined by the SMBus specification. > +The following I2C block transactions are similar to the SMBus Block Read > +and Write operations, except these do not have a Count byte. They are > +supported by the SMBus layer and are described here for completeness, but > +they are *NOT* defined by the SMBus specification. > > I2C block transactions do not limit the number of bytes transferred > but the SMBus layer places a limit of 32 bytes. Reviewed-by: Jean Delvare -- Jean Delvare SUSE L3 Support