M_MCLOC
M_MCLOC("per_ck", per_src, RCC_D1CCIPR, 28, 3),
M_MCLOC("pllsrc", pll_src, RCC_PLLCKSELR, 0, 3),
M_MCLOC("sys_ck", sys_src, RCC_CFGR, 0, 3),
M_MCLOC("tracein_ck", tracein_src, RCC_CFGR, 0, 3),