Max 10 Unconstrained clock in onchip_flash

I found some information in the knowledge database that seems related to this. Do a search using the keywords max10 flash_se_neg_reg. This finds an entry Warning (332060): Node: *altera_onchip_flash:onchip_flash|altera_onchip_flash_avmm_data_controller:avmm_data_controller|flash_se_neg_reg was determined to be a clock but was found without an associated clock assignment. That discusses a workaround that may be helpful. I have not tried this yet but may be useful to others.