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Date:   Tue, 30 Mar 2021 20:44:17 +0200
From:   Wolfram Sang <wsa+renesas@sang-engineering.com>
To:     Randy Dunlap <rdunlap@infradead.org>
Cc:     linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
        linux-gpio@vger.kernel.org
Subject: Re: [PATCH RFC/RFT 1/1] misc: add simple logic analyzer using polling
Message-ID: <20210330184417.GA1001@kunai>
Mail-Followup-To: Wolfram Sang <wsa+renesas@sang-engineering.com>,
        Randy Dunlap <rdunlap@infradead.org>, linux-kernel@vger.kernel.org,
        linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org
References: <20210330085655.12615-1-wsa+renesas@sang-engineering.com>
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> > +snipplet which analyzes an I2C bus at 400KHz on a Renesas Salvator-XS =
board,
>=20
>    snippet

Thanks!

>=20
> > +the following settings are used: The isolated CPU shall be CPU1 becaus=
e it is a
> > +big core in a big.LITTLE setup. Because CPU1 is the default, we don't =
need a
> > +parameter. The bus speed is 400kHz. So, the sampling theorem says we n=
eed to
> > +sample at least at 800kHz. However, falling of both, SDA and SCL, in a=
 start
>=20
> Is "falling" like a falling edge of a signal?

Yes. It seems I should make it more clear, then.

Thanks for the review, Randy!


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