<div dir="ltr"><div>[+cc pkg-raspi-maintainers, in case someone else has run into this issue before]</div><div><br></div>I have only verified the serial port works with 115200 8n1.<div><br></div><div>Please report an upstream Linux kernel bug, as there are no Debian-specific changes in this area of the kernel.</div><div><br></div><div>Sorry I can’t be of more help,</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Feb 18, 2018 at 11:59 AM, Thomas Wuensche <span dir="ltr"><<a href="mailto:wuensche@ems-wuensche.com" target="_blank">wuensche@ems-wuensche.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
after having troubles with the unclear kernel upgrade structures<br>
on raspbian I switched to your debian image. However I have troubles<br>
with the serial port - hope you can help.<br>
<br>
My project needs serial data from a sensor module. If I go with<br>
serial-over-usb it works, however not with direct connection.<br>
<br>
After a number of fruitless tries I have the following constellation:<br>
<br>
If I output serial data to /dev/ttyS1 I can see the data on the port<br>
lines with the oscilloscope and read back the data from that port.<br>
However when trying to switch line parameters, stty does not come<br>
back. So I can not adjust the required terminal parameters.<br>
<br>
If I try the same with /dev/ttyAMA0 I do not see anything on the<br>
port and can't read back data. However changing port parameters<br>
works. In message log I have a line:<br>
<br>
uart-pl011 3f201000.serial: no DMA platform data<br>
<br>
I have tried both with and without "enable_uart=1" in<br>
/boot/firmware/config.txt<br>
<br>
As I'm playing for weeks now with that issue and no result I would<br>
be glad if you could help me!<br>
<br>
Best regards,<br>
<br>
Thomas Wuensche<br>
<span class="HOEnZb"><font color="#888888">--<br>
EMS Dr. Thomas Wuensche e.K.<br>
Sonnenhang 3<br>
85304 Ilmmuenster<br>
HR Ingolstadt, HRA 170106<br>
<br>
Phone: <a href="tel:%2B49-8441-490260" value="+498441490260">+49-8441-490260</a><br>
Fax : <a href="tel:%2B49-8441-81860" value="+49844181860">+49-8441-81860</a><br>
<a href="http://www.ems-wuensche.com" rel="noreferrer" target="_blank">http://www.ems-wuensche.com</a><br>
</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Best regards,<br>Michael</div>
</div>