Re: [PATCH RFC v4 10/10] tty: serdev: add functions to retrieve common UART settings

[Stefan Wahren]

Am 27.03.2017 um 22:00 schrieb Rob Herring:
> On Mon, Mar 27, 2017 at 8:37 AM, Stefan Wahren <stefan.wahren@xxxxxxxx> wrote:
>> Currently serdev core doesn't provide functions to retrieve common
>> UART settings like data bits, stop bits or parity. This patch adds
>> the interface to the core and the necessary implementation for
>> serdev-ttyport.
> It doesn't provide them because why do you need to know? The attached
> device should request the settings it needs and be done with it. Maybe
> some devices can support a number of settings and you could want
> negotiate the settings with the UART, though surely 8N1 is in that
> list. It's rare to see something that's not 8N1 from what I've seen.

During development it's very helpful to check the current UART settings
and error counter. Currently i can't see a replacement for
/sys/class/tty/ttyXYZ .

Are there any plans about it?

>
> Rob