arm_cmn_get_index
dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
unsigned int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);