Linux Device Drivers Development

Feeding init data into the DT

In order to extract init data passed from within the DT, there is a new data type that we need to introduce, struct of_regulator_match, which looks like this:

struct of_regulator_match { 
   const char *name; 
   void *driver_data; 
   struct regulator_init_data *init_data; 
   struct device_node *of_node; 
   const struct regulator_desc *desc; 
}; 

Prior to making any use of this data structure, we need to figure out how to achieve the regulator binding of a DT file.

Every PMIC node in the DT should have a sub-node named regulators, in which we have to declare each of the regulators this PMIC provides as a dedicated sub-node. In other words, every regulator of a PMIC is defined as a sub-node of the regulators node, which in turn ...