Does regmap-i2c not automatically switch to I2C mux?

Dear all， Does regmap-i2c not automatically switch to I2C mux? Add i2c-device(the driver use regmap-i2c) under i2c-mux on a i2c bus, set i2c-mux to another channel, then cat the node under /sys/class/hwmon/xxx, cannot get the value from the i2c-device. when use another i2c-device( not use regmap in driver) get value from i2c-device, this error will not occur. Does the device driver need any special settings when using regmap? Does anyone know why? thanks, Byron