linux-kernel - Re: [PATCH V4 2/9] i2c: xiic: Fix Rx and Tx paths in standard mode

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Message-ID: <Y9030UKPcfMZDUa7@shikoro>
Date:   Fri, 3 Feb 2023 17:35:29 +0100
From:   Wolfram Sang <wsa@...nel.org>
To:     Manikanta Guntupalli <manikanta.guntupalli@....com>
Cc:     michal.simek@...inx.com, michal.simek@....com,
        devicetree@...r.kernel.org, andrew@...n.ch, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, git@....com, srinivas.goud@....com,
        shubhrajyoti.datta@....com, manion05gk@...il.com,
        Raviteja Narayanam <raviteja.narayanam@...inx.com>
Subject: Re: [PATCH V4 2/9] i2c: xiic: Fix Rx and Tx paths in standard mode

On Thu, Feb 02, 2023 at 03:11:31PM +0530, Manikanta Guntupalli wrote:
> From: Raviteja Narayanam <raviteja.narayanam@...inx.com>
> 
> repeated start
> 
> When a combined message request comes from user space, the
> controller has to initiate repeated start sequence. In standard
> mode, this repeated start sequence is corrupted if there is still
> data in the Tx FIFO.
> 
> So, always make sure that all the bytes are completely transmitted
> out of the FIFO by waiting for TXEMPTY, if the previous message is
> of Tx type.
> 
> Signed-off-by: Raviteja Narayanam <raviteja.narayanam@...inx.com>
> Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@....com>
> Acked-by: Michal Simek <michal.simek@....com>

Applied to for-next, thanks!


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