linux-kernel - Re: [PATCH v3 0/5] serial: sc16is7xx: split into core and I2C/SPI parts

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Date: Tue, 2 Apr 2024 22:41:54 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Hugo Villeneuve <hugo@...ovil.com>
Cc: gregkh@...uxfoundation.org, jirislaby@...nel.org, 
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org, 
	Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: Re: [PATCH v3 0/5] serial: sc16is7xx: split into core and I2C/SPI parts

On Tue, Apr 2, 2024 at 8:45 PM Hugo Villeneuve <hugo@...ovil.com> wrote:
>
> From: Hugo Villeneuve <hvilleneuve@...onoff.com>
>
> Hello,
> this patch series splits the SPI/I2C parts for the sc16is7xx driver into
> separate source files (and separate I2C/SPI drivers).
>
> These changes are based on suggestions made by Andy Shevchenko
> following this discussion:
>
> Link: https://lore.kernel.org/all/CAHp75VebCZckUrNraYQj9k=Mrn2kbYs1Lx26f5-8rKJ3RXeh-w@mail.gmail.com/
>
> The changes are split into multiple patches to facilitate the review process.
> In the end, some of them could be merged into a single patch.
>
> I have tested the changes on a custom board with two SC16IS752 DUART over
> a SPI interface using a Variscite IMX8MN NANO SOM. The four UARTs are
> configured in RS-485 mode.
>
> I did not test the changes on a real SC16is7xx using the I2C interface. But
> I slighly modified the driver to be able to simulate an I2C device using

slightly

> i2c-stub. I was then able to instantiate a virtual I2C device without
> disturbing existing connection/communication between real SPI devices on
> /dev/ttySC0 and /dev/ttySC2 (using a loopback cable).

For patches 1,2,5
Reviewed-by: Andy Shevchenko <andy@...nel.org>

-- 
With Best Regards,
Andy Shevchenko