PRU_C28
pru_rproc_set_ctable(prueth->pru[slice], PRU_C28, 0x100 << 8);
pru_rproc_set_ctable(prueth->rtu[slice], PRU_C28, 0x100 << 8);
pru_rproc_set_ctable(prueth->txpru[slice], PRU_C28, 0x100 << 8);
pru_rproc_set_ctable(emac->pru, PRU_C28, sharedramaddr);
pru_rproc_set_ctable(prueth->pru0, PRU_C28, sharedramaddr);
pru_rproc_set_ctable(prueth->pru1, PRU_C28, sharedramaddr);
idx_mask = (c >= PRU_C28) ? 0xFFFF : 0xFF;