device-tree example for altera-cyclone-v bsp

[Christian Spindeldreier]

Hi all,

we are trying to run rtems-5 on the Terasic DE10 Standard board 
containing an Intel (former Altera) Cyclone V SoC-FPGA, which is 
identical the the one on the one on the DK-DEV-5CSXC6N.

As there is the altcycv_devkit bsp within the rtems kernel we tried 
simply to run a simple hello-world application based on this bsp.

We managed to build a u-boot image (FIT) containing rtems and a dtb 
which starts to run, but freezes without any output. We assume this 
issue to be related to the dtb which u-boot has to provide, but there is 
no example dts within the bsp. At the moment we use a slightly modified 
version of the socfpga_cyclone5_socdk device tree from the linux-4.14 
kernel working fine with the linux kernel, but this does not seem to 
provide the required information for rtems.

Can someone maybe provide an example dts file, which shows how the nodes 
should be named, and what information has to be provided by the device 
tree? Any information on the usage of the altera-cyclone-v bsp might be 
helpful.

Kind regards,

Christian

-- 
Dipl.-Ing. Christian Spindeldreier
Leibniz University Hannover (LUH)
Institute of Microelectronic Systems
Architectures and Systems Group
Appelstr. 4, 30167 Hannover, Germany