RTL3_CONFIG2_PL1
reg &= ~(RTL3_CONFIG2_PL1|RTL3_CONFIG2_PL0);
reg |= RTL3_CONFIG2_PL1|RTL3_CONFIG2_PL0;
conf2 &= RTL3_CONFIG2_PL1|RTL3_CONFIG2_PL0;
case RTL3_CONFIG2_PL1|RTL3_CONFIG2_PL0:
case RTL3_CONFIG2_PL1: /* XXX rtl docs sys 10base5, but chip cant do */