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Integrate linux-seco-imx/davc/userspace_reg

GitBot requested to merge linux-seco-imx/davc/userspace_reg into kirkstone

Commit: https://git.seco.com/edgehog/bsp/nxp/linux-seco-imx/-/commit/9d59e0d4b16a10871fed246a14181ad3b4d8dc41

Add dt_node interface for usege through device-tree

Originally, the driver works only via the old platform-driver interface. Now it uses also the device tree interface. A possible node is:

rs232-consumer {
	compatible          = "reg-userspace-consumer";
	regulator-name      = "rs232-consumer";
	regulator-supplies  = "reg_rs232_en";
	reg_rs232_en-supply = <&reg_rs232_en>;
	regulator-boot-on;
};

Where:

  • regulator-name: name of the particular istance, used also to create the file descriptor at user-space level;
  • regulator0supplies : name of the regulator it uses as interface;
  • -supply = variable node name. It is the node of the regulator that the particular istance uses;
  • regulator-boot-on : (default state: off) used to turn on the regulator at boot.

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