PCR_PSPEED
netc_port_rmw(np, NETC_PCR, PCR_PSPEED, PSPEED_SET_VAL(speed));
#define PSPEED_SET_VAL(s) FIELD_PREP(PCR_PSPEED, ((s) / 10 - 1))
val &= ~PCR_PSPEED;
val |= (PCR_PSPEED & PCR_PSPEED_VAL(speed));
val |= (PCR_PSPEED & PCR_PSPEED_VAL(SPEED_10));