linux-kernel - Re: [PATCH v2 2/5] regmap/SoundWire: sdw: add support for SoundWire 1.2 MBQ

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Message-ID: <20201201115442.GA5239@sirena.org.uk>
Date:   Tue, 1 Dec 2020 11:54:42 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Bard Liao <yung-chuan.liao@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, vkoul@...nel.org,
        vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
        ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        bard.liao@...el.com
Subject: Re: [PATCH v2 2/5] regmap/SoundWire: sdw: add support for SoundWire
 1.2 MBQ

On Mon, Nov 30, 2020 at 10:40:17PM +0800, Bard Liao wrote:
> From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> 
> The SoundWire 1.1 specification only allowed for reads and writes of
> bytes. The SoundWire 1.2 specification adds a new capability to
> transfer "Multi-Byte Quantities" (MBQ) across the bus. The transfers
> still happens one-byte-at-a-time, but the update is atomic.

Please do not submit new versions of already applied patches, please
submit incremental updates to the existing code.  Modifying existing
commits creates problems for other users building on top of those
commits so it's best practice to only change pubished git commits if
absolutely essential.

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