get_brgfreq
#define CPM2_BRG_INT_CLK (get_brgfreq())
sysclk = get_brgfreq();
#define BRG_INT_CLK (get_brgfreq())
EXPORT_SYMBOL(get_brgfreq);
extern u32 get_brgfreq(void);
brg = get_brgfreq() / (32 * 2 * cpm->freq) - 3;
pdata->sysclk = get_brgfreq();