DWC2_US_PER_SLICE
#define DWC2_SLICES_PER_UFRAME (DWC2_US_PER_UFRAME / DWC2_US_PER_SLICE)
(DIV_ROUND_UP((us), DWC2_US_PER_SLICE) * \
DWC2_US_PER_SLICE)
DWC2_US_PER_SLICE)
DWC2_US_PER_SLICE * qh->ls_start_schedule_slice);
int slices = DIV_ROUND_UP(qh->device_us, DWC2_US_PER_SLICE);
int slices = DIV_ROUND_UP(qh->device_us, DWC2_US_PER_SLICE);