PORT_LOGIC_SPEED_CHANGE
tmp |= PORT_LOGIC_SPEED_CHANGE;
if (!(tmp & PORT_LOGIC_SPEED_CHANGE))
val |= PORT_LOGIC_SPEED_CHANGE;
val |= PORT_LOGIC_SPEED_CHANGE;
tmp |= PORT_LOGIC_SPEED_CHANGE;
val &= ~PORT_LOGIC_SPEED_CHANGE;
val |= PORT_LOGIC_SPEED_CHANGE;
if (!(val & PORT_LOGIC_SPEED_CHANGE))
val |= PORT_LOGIC_SPEED_CHANGE;