i2c1_default: i2c1-default {
                                pins = "gpio2", "gpio3";
+                               function = "blsp_i2c1";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c1_sleep: i2c1-sleep {
                                pins = "gpio2", "gpio3";
+                               function = "blsp_i2c1";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c2_default: i2c2-default {
                                pins = "gpio6", "gpio7";
+                               function = "blsp_i2c2";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c2_sleep: i2c2-sleep {
                                pins = "gpio6", "gpio7";
+                               function = "blsp_i2c2";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c3_default: i2c3-default {
                                pins = "gpio10", "gpio11";
+                               function = "blsp_i2c3";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c3_sleep: i2c3-sleep {
                                pins = "gpio10", "gpio11";
+                               function = "blsp_i2c3";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c4_default: i2c4-default {
                                pins = "gpio14", "gpio15";
+                               function = "blsp_i2c4";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c4_sleep: i2c4-sleep {
                                pins = "gpio14", "gpio15";
+                               function = "blsp_i2c4";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c5_default: i2c5-default {
                                pins = "gpio18", "gpio19";
+                               function = "blsp_i2c5";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c5_sleep: i2c5-sleep {
                                pins = "gpio18", "gpio19";
+                               function = "blsp_i2c5";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c6_default: i2c6-default {
                                pins = "gpio22", "gpio23";
+                               function = "blsp_i2c6";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c6_sleep: i2c6-sleep {
                                pins = "gpio22", "gpio23";
+                               function = "blsp_i2c6";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c7_default: i2c7-default {
                                pins = "gpio26", "gpio27";
+                               function = "blsp_i2c7";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c7_sleep: i2c7-sleep {
                                pins = "gpio26", "gpio27";
+                               function = "blsp_i2c7";
                                drive-strength = <2>;
                                bias-pull-up;
                        };
 
                        i2c8_default: i2c8-default {
                                pins = "gpio30", "gpio31";
+                               function = "blsp_i2c8";
                                drive-strength = <2>;
                                bias-disable;
                        };
 
                        i2c8_sleep: i2c8-sleep {
                                pins = "gpio30", "gpio31";
+                               function = "blsp_i2c8";
                                drive-strength = <2>;
                                bias-pull-up;
                        };