linux-kernel - Re: [PATCH v5 2/9] dt-bindings: i2c: add bindings for i2c analog and digital filter

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Message-ID: <20190917142808.GA7900@bogus>
Date:   Tue, 17 Sep 2019 09:28:08 -0500
From:   Rob Herring <robh@...nel.org>
To:     Eugen.Hristev@...rochip.com
Cc:     wsa@...-dreams.de, peda@...ntia.se, mark.rutland@....com,
        Ludovic.Desroches@...rochip.com, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, alexandre.belloni@...tlin.com,
        Nicolas.Ferre@...rochip.com
Subject: Re: [PATCH v5 2/9] dt-bindings: i2c: add bindings for i2c analog and
 digital filter

On Wed, Sep 11, 2019 at 08:24:20AM +0000, Eugen.Hristev@...rochip.com wrote:
> From: Eugen Hristev <eugen.hristev@...rochip.com>
> 
> Some i2c controllers have a built-in digital or analog filter.
> This is specifically required depending on the hardware PCB/board.
> Some controllers also allow specifying the maximum width of the
> spikes that can be filtered for digital filter. The width length can be
> specified in nanoseconds.
> Analog filters can be configured to have a cutoff frequency (low-pass filter).
> This frequency can be specified in Hz.
> Added an optional property for such types of analog filters.
> 
> Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
> ---
>  Documentation/devicetree/bindings/i2c/i2c.txt | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)

Reviewed-by: Rob Herring <robh@...nel.org>