BCM2835_SPI_CS_TA
bcm2835_wr(bs, BCM2835_SPI_CS, cs | BCM2835_SPI_CS_TA);
target->clear_rx_cs = cs | BCM2835_SPI_CS_TA |
BCM2835_SPI_CS_TA);
bcm2835_wr(bs, BCM2835_SPI_CS, cs | BCM2835_SPI_CS_TA);
cs |= BCM2835_SPI_CS_INTR | BCM2835_SPI_CS_INTD | BCM2835_SPI_CS_TA;
bcm2835_wr(bs, BCM2835_SPI_CS, cs | BCM2835_SPI_CS_TA
bcm2835_wr(bs, BCM2835_SPI_CS, cs | BCM2835_SPI_CS_TA
cs | BCM2835_SPI_CS_TA | BCM2835_SPI_CS_DMAEN);