smu7_get_maximum_link_speed
uint16_t target_link_speed = smu7_get_maximum_link_speed(hwmgr, smu7_nps);
current_link_speed = smu7_get_maximum_link_speed(hwmgr, polaris10_cps);
uint16_t target_link_speed = smu7_get_maximum_link_speed(hwmgr, smu7_ps);