linux-kernel - Re: [RFC PATCH] tty: serial: Add 8250-core based omap driver

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Message-ID: <CAOCHtYgxMeA+Arfe40XeFDEKuCJ8qo1RqNR0hYBGr_Wp6sRfdA@mail.gmail.com>
Date:	Wed, 2 Jul 2014 14:25:56 -0500
From:	Robert Nelson <robertcnelson@...il.com>
To:	Aaro Koskinen <aaro.koskinen@....fi>
Cc:	Felipe Balbi <balbi@...com>, Tony Lindgren <tony@...mide.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	linux kernel <linux-kernel@...r.kernel.org>,
	linux-serial@...r.kernel.org,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH] tty: serial: Add 8250-core based omap driver

On Wed, Jul 2, 2014 at 2:09 PM, Aaro Koskinen <aaro.koskinen@....fi> wrote:
> Hi,
>
> On Wed, Jul 02, 2014 at 11:09:32AM -0500, Felipe Balbi wrote:
>> > It has been only tested as console UART.
>> > The tty name is ttyS based instead of ttyO. How big is the pain here,
>> > what could be the easiest way to provide compatibility?
>>
>> have been considering that myself for months. You could pass an optional
>> argument to serial8250_register_8250_port() but that only solves part of
>> the problem :-(
>
> When ttyS -> ttyO change was done on OMAP, compatibility was not an issue.
> Why should we care about it now?

It would be a good opportunity to force everyone to update their bootloader. ;)

Besides the BeagleBoard forum is quiet now, no one is complaining
about that old (ttyS -> ttyO) transition anymore..

I'll just end up carrying a patch like, to support bb.org users over
the transition..

https://github.com/RobertCNelson/stable-kernel/blob/v3.7.x/patches/omap_beagle/0004-zeroMAP-Open-your-eyes.patch

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/
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