CLOCK_WRITE
CLOCK_WRITE(sc, epll->lock_reg,
CLOCK_WRITE(sc, epll->con0_reg, v0);
CLOCK_WRITE(sc, epll->con1_reg, v1);
CLOCK_WRITE(sc, emux->reg, v);
CLOCK_WRITE(sc, ediv->reg, v);
CLOCK_WRITE(sc, egate->reg, v);
CLOCK_WRITE(sc, emux->reg, v);
CLOCK_WRITE(sc, ediv->reg, v);
CLOCK_WRITE(sc, egate->reg, v);