From: Wolfram Sang <wsa@sang-engineering.com>
To: "Matwey V. Kornilov" <matwey.kornilov@gmail.com>
Cc: linux-i2c@vger.kernel.org
Subject: Re: i2c-slave-testunit over i2c-gpio bus
Date: Tue, 18 Feb 2025 10:44:16 +0100 [thread overview]
Message-ID: <Z7RWcBxOvNpSPmWN@ninjato> (raw)
In-Reply-To: <CAJs94EaOtgzVnPArj27Vupobr1jgDF3-tS_+29_RfumL7TO2BA@mail.gmail.com>
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Hi,
> As far as I learned from the i2c-gpio source, the module doesn't
> introduce itself as i2c slave compatible. Do I understand it
> correctly? If so, would it have any sense to add i2c slave support for
> i2c-gpio?
No, i2c-gpio is not suitable for this. It would mean Linux had to read
the GPIOs constantly to not miss anything, e.g. the remote controller
starting a communication. With all the latencies involved in running the
system, this cannot be guaranteed. You need dedicated HW for that.
Sorry for no better news,
Wolfram
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next prev parent reply other threads:[~2025-02-18 9:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-18 8:49 i2c-slave-testunit over i2c-gpio bus Matwey V. Kornilov
2025-02-18 9:44 ` Wolfram Sang [this message]
2025-02-18 9:46 ` Matwey V. Kornilov
2025-02-18 10:02 ` Wolfram Sang
2025-02-18 10:21 ` Matwey V. Kornilov
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