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Date:   Sun, 8 Jan 2017 23:46:00 +0100
From:   Sebastian Reichel <>
To:     Rob Herring <>
Cc:     Greg Kroah-Hartman <>,
        Marcel Holtmann <>,
        Jiri Slaby <>, Arnd Bergmann <>,
        "Dr . H . Nikolaus Schaller" <>,
        Peter Hurley <>,
        Andy Shevchenko <>,
        Alan Cox <>,
        Loic Poulain <>,
        Pavel Machek <>, NeilBrown <>,
        Linus Walleij <>,,,
Subject: Re: [PATCH 0/9] Serial slave device bus

Hi Rob,

On Fri, Jan 06, 2017 at 10:26:26AM -0600, Rob Herring wrote:
> Here goes another attempt at a serial device bus (aka uart slaves, tty
> slaves, etc.).
> After some discussions with Dmitry at LPC, I decided to move away from
> extending serio and moved back to making a new bus type instead. He didn't
> think using serio was a good fit, and serio has a number of peculiarities
> in regards to sysfs and it's driver model. I don't think we want to inherit
> those for serial slave devices.
> This version sits on top of tty_port rather than uart_port as Alan
> requested. Once I created a struct tty rather than moving everything
> needed to tty_port, it became a lot easier and less invasive to the tty
> core code.
> I have hacked up versions of the BT ldisc and TI ST drivers moved over to
> use the serdev bus. I have BT working on the HiKey board which has TI BT.
> With the serdev bus support, it eliminates the need for the TI userspace
> UIM daemon.
> This series and the mentioned drivers can be found here[1].
> Rob

After adding kernel docs in patch 1, the DT binding change and mine
and Andy's comments in patch 7 the series is

"Reviewed-By: Sebastian Reichel <>"

-- Sebastian

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