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Altera_Forum
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10 years ago

HPS-FPGA Bridge enableing

Hi All, I am new to the forum and to Altera SOCs, so sorry if I lake elementary knowledge!! I have a Arria 10 development board (http://rocketboards.org/) and I have mounted a linux image on a SD car...
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Altera_Forum
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10 years ago

Hi.. I also have the same issue.. If i use linux-socfpga kernel version 3.18, it shows folders inside /sys/class/fpga-bridge/.. But when i implement it on linux kernel 3.19.6 version, the folder /sys/class/fpga-bridge/ is empty.. I am using the same u-boot for both. I added the driver for fpga bridge with reference to kernel 3.18. The kernel bootlog shows the following.

0.141454] altera_hps2fpga_bridge soc:fpgabridge@0: Could not get hps2fpga reset control!

[ 0.141467] altera_hps2fpga_bridge soc:fpgabridge@0: probe deferral not supported

[ 0.141518] altera_hps2fpga_bridge soc:fpgabridge@1: Could not get lwhps2fpga reset control!

[ 0.141528] altera_hps2fpga_bridge soc:fpgabridge@1: probe deferral not supported

[ 0.141573] altera_hps2fpga_bridge soc:fpgabridge@2: Could not get fpga2hps reset control!

[ 0.141583] altera_hps2fpga_bridge soc:fpgabridge@2: probe deferral not supported

Can anybody help. Thanks in advance.