linux-kernel - Re: [PATCH V6 3/3] i2c: xiic: Add SCL frequency configuration support

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Message-ID: <Y+/1dO03cvNbzfWk@shikoro>
Date:   Fri, 17 Feb 2023 22:45:24 +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 V6 3/3] i2c: xiic: Add SCL frequency configuration support

On Wed, Feb 15, 2023 at 07:02:24PM +0530, Manikanta Guntupalli wrote:
> From: Raviteja Narayanam <raviteja.narayanam@...inx.com>
> 
> From 'clock-frequency' device tree property, configure I2C SCL
> frequency by calculating the timing register values according to
> input clock.
> 
> After soft reset in reinit function, the timing registers are set
> to default values (configured in design tool). So, setting SCL
> frequency is done inside reinit function after the soft reset.
> This allows configuration of SCL frequency exclusively through
> software via device tree property, overriding the design.
> If the clock-frequency parameter is not specified in DT, driver
> doesn't configure frequency, making it backward compatible.
> 
> 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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