···493493 Add support for HiSilicon Hi6421 PMIC. Hi6421 includes multi-494494 functions, such as regulators, RTC, codec, Coulomb counter, etc.495495 This driver includes core APIs _only_. You have to select496496- individul components like voltage regulators under corresponding496496+ individual components like voltage regulators under corresponding497497 menus in order to enable them.498498 We communicate with the Hi6421 via memory-mapped I/O.499499