drivers/clk/clk-conf.c

1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/clk-provider.h>
9 #include <linux/clk/clk-conf.h>
20 	num_parents = of_count_phandle_with_args(node, "assigned-clock-parents",  in __set_clk_parents()
21 						 "#clock-cells");  in __set_clk_parents()
22 	if (num_parents == -EINVAL)  in __set_clk_parents()
23 		pr_err("clk: invalid value of clock-parents property at %pOF\n",  in __set_clk_parents()
27 		rc = of_parse_phandle_with_args(node, "assigned-clock-parents",  in __set_clk_parents()
28 					"#clock-cells",	index, &clkspec);  in __set_clk_parents()
31 			if (rc == -ENOENT)  in __set_clk_parents()
43 			if (PTR_ERR(pclk) != -EPROBE_DEFER)  in __set_clk_parents()
44 				pr_warn("clk: couldn't get parent clock %d for %pOF\n",  in __set_clk_parents()
49 		rc = of_parse_phandle_with_args(node, "assigned-clocks",  in __set_clk_parents()
50 					"#clock-cells", index, &clkspec);  in __set_clk_parents()
61 			if (PTR_ERR(clk) != -EPROBE_DEFER)  in __set_clk_parents()
62 				pr_warn("clk: couldn't get assigned clock %d for %pOF\n",  in __set_clk_parents()
88 	of_property_for_each_u32(node, "assigned-clock-rates", rate) {  in __set_clk_rates()
90 			rc = of_parse_phandle_with_args(node, "assigned-clocks",  in __set_clk_rates()
91 					"#clock-cells",	index, &clkspec);  in __set_clk_rates()
94 				if (rc == -ENOENT)  in __set_clk_rates()
107 				if (PTR_ERR(clk) != -EPROBE_DEFER)  in __set_clk_rates()
108 					pr_warn("clk: couldn't get clock %d for %pOF\n",  in __set_clk_rates()
126  * of_clk_set_defaults() - parse and set assigned clocks configuration
127  * @node: device node to apply clock settings for
130  * This function parses 'assigned-{clocks/clock-parents/clock-rates}' properties
131  * and sets any specified clock parents and rates. The @clk_supplier argument
132  * should be set to true if @node may be also a clock supplier of any clock
133  * listed in its 'assigned-clocks' or 'assigned-clock-parents' properties.