Am 27.03.2017 um 22:00 schrieb Rob Herring:

On Mon, Mar 27, 2017 at 8:37 AM, Stefan Wahren [off-list ref] wrote:

quoted

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