drivers/of/cpu.c

1 // SPDX-License-Identifier: GPL-2.0
7  * of_get_cpu_hwid - Get the hardware ID from a CPU device node
29  * arch_match_cpu_phys_id - Match the given logical CPU and physical id
79  * arch_find_n_match_cpu_physical_id - See if the given device node is
81  * else false.  If 'thread' is non-NULL, the local thread number within the
87 	/* Check for non-standard "ibm,ppc-interrupt-server#s" property  in arch_find_n_match_cpu_physical_id()
93 					   "ibm,ppc-interrupt-server#s",  in arch_find_n_match_cpu_physical_id()
101  * of_get_cpu_node - Get device node associated with the given logical CPU
146 	return of_node_get(cpu_dev->of_node);  in of_cpu_device_node_get()
155  * Return: The logical CPU number of the given CPU device_node or -ENODEV if the
172 	return -ENODEV;  in of_cpu_node_to_id()
177  * of_get_cpu_state_node - Get CPU's idle state node at the given index
180  * @index: The index in the list of the idle states
182  * Two generic methods can be used to describe a CPU's idle states, either via
183  * a flattened description through the "cpu-idle-states" binding or via the
184  * hierarchical layout, using the "power-domains" and the "domain-idle-states"
185  * bindings. This function check for both and returns the idle state node for
188  * Return: An idle state node if found at @index. The refcount is incremented
197 	err = of_parse_phandle_with_args(cpu_node, "power-domains",  in of_get_cpu_state_node()
198 					"#power-domain-cells", 0, &args);  in of_get_cpu_state_node()
201 			of_parse_phandle(args.np, "domain-idle-states", index);  in of_get_cpu_state_node()
208 	return of_parse_phandle(cpu_node, "cpu-idle-states", index);  in of_get_cpu_state_node()