ATOM_PPLIB_LIMITED_REFRESHRATE_50HZ  293 drivers/gpu/drm/amd/include/pptable.h #define ATOM_PPLIB_LIMITED_REFRESHRATE_50HZ         1
ATOM_PPLIB_LIMITED_REFRESHRATE_50HZ  266 drivers/gpu/drm/radeon/pptable.h #define ATOM_PPLIB_LIMITED_REFRESHRATE_50HZ         1