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Parallella Community Supercomputing for Everyone 2014-09-18T09:34:33+00:00 https://parallella.org/forums/feed.php?f=48&t=1724 2014-09-18T09:34:33+00:00 2014-09-18T09:34:33+00:00 https://parallella.org/forums/viewtopic.php?t=1724&p=10808#p10808 <![CDATA[Re: Setup driver for Uart0 in Linux [solved]]]>
There is a page on the wiki about and it would be great to have another which details how to enable and use the other UART.

Regards,

Andrew

Statistics: Posted by 9600 — Thu Sep 18, 2014 9:34 am

]]> 2014-09-17T19:04:12+00:00 2014-09-17T19:04:12+00:00 https://parallella.org/forums/viewtopic.php?t=1724&p=10799#p10799 <![CDATA[Re: Setup driver for Uart0 in Linux]]> Statistics: Posted by moses_rotesmeer — Wed Sep 17, 2014 7:04 pm

]]> 2014-09-12T22:25:23+00:00 2014-09-12T22:25:23+00:00 https://parallella.org/forums/viewtopic.php?t=1724&p=10722#p10722 <![CDATA[Re: Setup driver for Uart0 in Linux]]> found the reason for the freeze:
(hint from this post: http://forums.xilinx.com/t5/Embedded-Li ... 674/page/2 )

for uart0 the devicetree entry clocks is not equal to uart1:

uart0:
clocks = <&clkc 23>, <&clkc 40>;

uart1:
clocks = <&clkc 24>, <&clkc 41>;

So it looks good now... I'll have to implement the uart client in the PL now but I'll post here if it works

Statistics: Posted by moses_rotesmeer — Fri Sep 12, 2014 10:25 pm

]]> 2014-09-12T18:04:09+00:00 2014-09-12T18:04:09+00:00 https://parallella.org/forums/viewtopic.php?t=1724&p=10716#p10716 <![CDATA[Re: Setup driver for Uart0 in Linux]]> Statistics: Posted by moses_rotesmeer — Fri Sep 12, 2014 6:04 pm

]]> 2014-09-17T19:04:33+00:00 2014-09-11T01:51:03+00:00 https://parallella.org/forums/viewtopic.php?t=1724&p=10695#p10695 <![CDATA[Setup driver for Uart0 in Linux [solved]]]> I'd like to activate UART0 on the zynq and use it from within Linux like a standard i/o device (/dev/tty...)
Im planning to route UART0 via Emio internally to another Unit that is instantiated in the PL (and has a Uart interface).
So my plan is:
-) activate UART0 it in XPS, set to Emio, make external
-) Generate the stub for the system
-) route the uart0 pins internally in the top verilog design to the other uart device that is also instantiated in the PL section
-) flash new *.bit.bin file into the PL
*) Load the Driver for Uart0 in Linux / Create I/O device node
-) Write a Linux Application to write to/ read from uart device via termios.h

I think, so far I would need some help with the step marked with *).
I'm using the current Ubuntu Version with Default Headless Kernel Image.

What is neccessary in order to get the Uart0 Device in Linux running?
Do I need to change anything in the kernel/recompile it or can I just load the driver for Uart0 somehow?
Do I need to generate a new devicetree for that?

Thanks for your help!
cheers, moses

Statistics: Posted by moses_rotesmeer — Thu Sep 11, 2014 1:51 am

]]>