Hi Lucas, ... > +#define REG_GENMASK(__high, __low) GENMASK_U32(__high, __low) > +#define REG_GENMASK64(__high, __low) GENMASK_U64(__high, __low) > +#define REG_GENMASK16(__high, __low) GENMASK_U16(__high, __low) > +#define REG_GENMASK8(__high, __low) GENMASK_U8(__high, __low) I was hoping to use directly GENMASK_U*() functions. Andi