linux-kernel - Re: [PATCH 3/3] i2c: meson: fixup rate calculation with filter delay

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Message-ID: <20201008100034.GE76290@ninjato>
Date:   Thu, 8 Oct 2020 12:00:34 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     Kevin Hilman <khilman@...libre.com>,
        Nicolas Belin <nbelin@...libre.com>, linux-i2c@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] i2c: meson: fixup rate calculation with filter delay

On Wed, Oct 07, 2020 at 10:07:51AM +0200, Jerome Brunet wrote:
> From: Nicolas Belin <nbelin@...libre.com>
> 
> Apparently, 15 cycles of the peripheral clock are used by the controller
> for sampling and filtering. Because this was not known before, the rate
> calculation is slightly off.
> 
> Clean up and fix the calculation taking this filtering delay into account.
> 
> Fixes: 30021e3707a7 ("i2c: add support for Amlogic Meson I2C controller")
> Signed-off-by: Nicolas Belin <nbelin@...libre.com>
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>

Applied to for-current, thanks!


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