F_DEV_ADDR
ret = regmap_field_write(i2c->fields[F_DEV_ADDR], xfer->dev_addr);
[F_DEV_ADDR] = MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 8, 14),
[F_DEV_ADDR] = MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 11, 17),
[F_DEV_ADDR] = MST_REG_FIELD(RTL9607_I2C_CONFIG, 14, 20),