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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
Date: Tue, 30 Mar 2021 20:44:17 +0200	[thread overview]
Message-ID: <20210330184417.GA1001@kunai> (raw)
In-Reply-To: <c74ddbd9-900a-0817-4c16-86f7cf9d96cc@infradead.org>

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> > +snipplet which analyzes an I2C bus at 400KHz on a Renesas Salvator-XS board,
> 
>    snippet

Thanks!

> 
> > +the following settings are used: The isolated CPU shall be CPU1 because 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 need to
> > +sample at least at 800kHz. However, falling of both, SDA and SCL, in a start
> 
> 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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  reply	other threads:[~2021-03-30 18:45 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-30  8:56 [PATCH RFC/RFT 0/1] add simple logic analyzer using polling Wolfram Sang
2021-03-30  8:56 ` [PATCH RFC/RFT 1/1] misc: " Wolfram Sang
2021-03-30 10:49   ` Andy Shevchenko
2021-03-30 15:41     ` Wolfram Sang
2021-03-30 18:18   ` Randy Dunlap
2021-03-30 18:44     ` Wolfram Sang [this message]
2021-04-01 13:07   ` Linus Walleij
2021-04-01 14:25     ` Bartosz Golaszewski
2021-04-01 21:45     ` Wolfram Sang

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