typedef struct avr32_sm_pm_gcctrl_t {
    unsigned int                 :16;
    unsigned int div             : 8;
    unsigned int                 : 3;
    unsigned int diven           : 1;
    unsigned int cpc             : 1;
    unsigned int cen             : 1;
    unsigned int pllsel          : 1;
    unsigned int oscsel          : 1;
} avr32_sm_pm_gcctrl_t;