linux-kernel - Re: [PATCH 0/9] Serial slave device bus

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Message-ID: <20170108224600.3ecr5p3zsdoyhwld@earth>
Date:   Sun, 8 Jan 2017 23:46:00 +0100
From:   Sebastian Reichel <sre@...nel.org>
To:     Rob Herring <robh@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Jiri Slaby <jslaby@...e.com>, Arnd Bergmann <arnd@...db.de>,
        "Dr . H . Nikolaus Schaller" <hns@...delico.com>,
        Peter Hurley <peter@...leysoftware.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>,
        Loic Poulain <loic.poulain@...el.com>,
        Pavel Machek <pavel@....cz>, NeilBrown <neil@...wn.name>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-bluetooth@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
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 <sre@...nel.org>"

-- Sebastian

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