SY8106A_VOUT1_SEL
reg = sypwr_read(sc, SY8106A_VOUT1_SEL);
sypwr_write(sc, SY8106A_VOUT1_SEL, reg);
value = sypwr_read(sc, SY8106A_VOUT1_SEL);
sypwr_write(sc, SY8106A_VOUT1_SEL, value | SY8106A_VOUT1_SEL_I2C);
reg = sypwr_read(sc, SY8106A_VOUT1_SEL);