linux-kernel - Re: [PATCH v5 7/7] tty: i3c: add TTY over I3C master support

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Message-ID: <20231201125904.6c8128b1@xps-13>
Date:   Fri, 1 Dec 2023 12:59:04 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Frank Li <Frank.Li@....com>
Cc:     alexandre.belloni@...tlin.com, conor.culhane@...vaco.com,
        imx@...ts.linux.dev, joe@...ches.com,
        linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org,
        zbigniew.lukwinski@...ux.intel.com, gregkh@...uxfoundation.org,
        jirislaby@...nel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH v5 7/7] tty: i3c: add TTY over I3C master support

Hi Frank,

Frank.Li@....com wrote on Thu, 30 Nov 2023 17:44:08 -0500:

> In typical embedded Linux systems, UART consoles require at least two pins,
> TX and RX. In scenarios where I2C/I3C devices like sensors or PMICs are
> present, we can save these two pins by using this driver. Pins is crucial
> resources, especially in small chip packages.
> 
> This introduces support for using the I3C bus to transfer console tty data,
> effectively replacing the need for dedicated UART pins. This not only
> conserves valuable pin resources but also facilitates testing of I3C's
> advanced features, including early termination, in-band interrupt (IBI)
> support, and the creation of more complex data patterns. Additionally,
> it aids in identifying and addressing issues within the I3C controller
> driver.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
> 
> Notes:
>     Change from v4 to v5
>     - send in i3c improvememtn patches.

This is not what I said, I believe this patch and the previous patch
should be sent separately.

Thanks,
Miquèl