NCR
CSR_WRITE_1(l, NCR, 0); /* use internal PHY */
CSR_WRITE_1(l, NCR, NCR_RST);
} while (NCR_RST & CSR_READ_1(l, NCR));
CSR_WRITE_1(l, NCR, NCR_RST);
} while (NCR_RST & CSR_READ_1(l, NCR));