* Robert Nelson <robertcnelson@xxxxxxxxx> [140702 12:27]: > On Wed, Jul 2, 2014 at 2:09 PM, Aaro Koskinen <aaro.koskinen@xxxxxx> 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 :-( Some kind of compability layer sure would be nice. > > 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.. How about a Kconfig option to provide ttyO by default? The not even do that if kernel has cmdline option nottyomap. > 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 Heh. Just to summarize the reason ttyO needs to be a separate name and device entry from ttyS is because we also have external 8250 devices on GPMC and hotplug busses. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
