Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/44740 )
Change subject: soc/intel/cnl: Allow enabling/disabling Chap device ......................................................................
Patch Set 13: Code-Review+1
(3 comments)
https://review.coreboot.org/c/coreboot/+/44740/13//COMMIT_MSG Commit Message:
https://review.coreboot.org/c/coreboot/+/44740/13//COMMIT_MSG@7 PS13, Line 7: Chap CHAP
https://review.coreboot.org/c/coreboot/+/44740/13//COMMIT_MSG@10 PS13, Line 10: Chap CHAP
https://review.coreboot.org/c/coreboot/+/44740/13//COMMIT_MSG@12 PS13, Line 12: The purpose of this device is not clear https://www.intel.com/content/dam/www/public/us/en/documents/specification-u...
It mentions something about the CHAP (Chipset Hardware Architecture Performance) counters.
Also see: https://patents.google.com/patent/US7773504