OP_DATA_BUSW
writel(OP_DATA_BUSW(OP_BUSW_8) | OP_DUMMY_CYC(0x3F) |
writel(OP_DATA_BUSW(OP_BUSW_8) | OP_DUMMY_CYC(0x3F),
cfg |= OP_DATA_BUSW(fls(op->data.buswidth) - 1) |
OP_DATA_BUSW(busw) | (t->rx_buf ? OP_READ : 0),