Are you running a GSRD Linux release?
Are you wanting to interface to the raw device driver or something like spidev?
Are you trying to interface to a memory device (flash or EEPROM)?
Here’s an attempt to impart some helpful info…
After enabling SPIM1 you’ll need to generate a new DTB from your QSYS project so Linux knows the device is present and enabled. Look again to see if something shows up either in /dev/ or in /sys/class as follows:
I’m running on Arria10 and SPIM1 shows up as “spi32766” here:
If I add a DTB binding to an EEPROM (as an example) then something will show up like:
If you add the spidev driver binding to the SPIM1 portion of your DTB then you should get something like:
Mine looks like:
Hope this helps a little.