SCKCR3
#define DIVSPI0ASYNC CONF_PACK(SCKCR3, 0, 2)
#define DIVSPI1ASYNC CONF_PACK(SCKCR3, 2, 2)
#define DIVSPI2ASYNC CONF_PACK(SCKCR3, 4, 2)
#define DIVSCI0ASYNC CONF_PACK(SCKCR3, 6, 2)
#define DIVSCI1ASYNC CONF_PACK(SCKCR3, 8, 2)
#define DIVSCI2ASYNC CONF_PACK(SCKCR3, 10, 2)
#define DIVSCI3ASYNC CONF_PACK(SCKCR3, 12, 2)
#define DIVSCI4ASYNC CONF_PACK(SCKCR3, 14, 2)