TACH_PERIOD_MASK  239 drivers/gpu/drm/amd/amdgpu/sid.h #       define TACH_PERIOD_MASK                         0xffffffff
TACH_PERIOD_MASK  239 drivers/gpu/drm/radeon/cikd.h #       define TACH_PERIOD_MASK                         0xffffffff
TACH_PERIOD_MASK  237 drivers/gpu/drm/radeon/sid.h #       define TACH_PERIOD_MASK                         0xffffffff