rt_clk_node Struct Reference

#include <clk.h>

Detailed Description

Clock provider node - represents a hardware clock controller.

A rt_clk_node corresponds to one hardware clock provider in the system, such as a PLL controller, a clock multiplexer, or a composite clock block defined in the device tree.

Each clock node may contain multiple hardware clock outputs, described as rt_clk_cell structures, which represent individual leaf clocks.

Members:

• parent — embedded rt_object header for RT-Thread object system.
• dev — back-reference to the hardware device providing this clock domain.
• parents_clk — optional array of parent clock handles.
• multi_clk — number of clock outputs exported by this provider.
• cells — list of rt_clk_cell pointers representing each output.
• ofw_parse — callback used to parse clock arguments from device tree (#clock-cells) and select the corresponding rt_clk_cell.
• priv — implementation-specific private data.

Typical usage:

1. Define a rt_clk_node describing the hardware clock controller.
2. Implement ofw_parse() to resolve device tree phandle arguments.
3. Register the node using rt_clk_register().