We are trying to implement fpga-bridge in linux-3.19.6. Since there is no fpga-bridge driver we created a folder in driver/misc with reference from linux-socfpga(version 3.18) and also edited the dts related to altera_cyclone5. While building, it doesnt show any error… But after booting it in Altera cyclone 5 board, the fpga-bridge folder is empty in /sys/class/fpga-bridge. The kernel bootlog shows the following
NOTE: fpga manager has been created in /sys/class/fpga
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 to fix this… Thanks in advance.