DCC_CFG_PORT_CONFIG
len1 = read_csr(ppd->dd, DCC_CFG_PORT_CONFIG);
write_csr(ppd->dd, DCC_CFG_PORT_CONFIG, len1);
reg = read_csr(dd, DCC_CFG_PORT_CONFIG);
reg = read_csr(dd, DCC_CFG_PORT_CONFIG);
write_csr(dd, DCC_CFG_PORT_CONFIG, reg);