1 // SPDX-License-Identifier: GPL-2.0-only
3  * Match running platform with pre-defined OPP values for CPUFreq
43  * struct sti_cpufreq_ddata - ST CPUFreq Driver Data
56 	struct device_node *np = ddata.cpu->of_node;  in sti_cpufreq_fetch_major()
83 	struct device_node *np = dev->of_node;  in sti_cpufreq_fetch_minor()
88 	ret = of_property_read_u32_index(np, "st,syscfg-eng",  in sti_cpufreq_fetch_minor()
92 			"No minor number offset provided %pOF [%d]\n",  in sti_cpufreq_fetch_minor()
100 			"Failed to read the minor number from syscon [%d]\n",  in sti_cpufreq_fetch_minor()
154 	struct device_node *np = dev->of_node;  in sti_cpufreq_set_opp_info()
157 	unsigned int version[VERSION_ELEMENTS];  in sti_cpufreq_set_opp_info()  local
158 	int pcode, substrate, major, minor;  in sti_cpufreq_set_opp_info()  local
162 		.supported_hw = version,  in sti_cpufreq_set_opp_info()
163 		.supported_hw_count = ARRAY_SIZE(version),  in sti_cpufreq_set_opp_info()
170 		return -ENODEV;  in sti_cpufreq_set_opp_info()
173 	ret = of_property_read_u32_index(np, "st,syscfg-eng",  in sti_cpufreq_set_opp_info()
203 		dev_err(dev, "Failed to obtain major version\n");  in sti_cpufreq_set_opp_info()
208 	minor = sti_cpufreq_fetch_minor();  in sti_cpufreq_set_opp_info()
209 	if (minor < 0) {  in sti_cpufreq_set_opp_info()
210 		dev_err(dev, "Failed to obtain minor version\n");  in sti_cpufreq_set_opp_info()
211 		/* Use default minor number */  in sti_cpufreq_set_opp_info()
212 		minor = DEFAULT_VERSION;  in sti_cpufreq_set_opp_info()
217 	version[0] = BIT(major);  in sti_cpufreq_set_opp_info()
218 	version[1] = BIT(minor);  in sti_cpufreq_set_opp_info()
219 	version[2] = BIT(substrate);  in sti_cpufreq_set_opp_info()
227 	dev_dbg(dev, "pcode: %d major: %d minor: %d substrate: %d\n",  in sti_cpufreq_set_opp_info()
228 		pcode, major, minor, substrate);  in sti_cpufreq_set_opp_info()
229 	dev_dbg(dev, "version[0]: %x version[1]: %x version[2]: %x\n",  in sti_cpufreq_set_opp_info()
230 		version[0], version[1], version[2]);  in sti_cpufreq_set_opp_info()
238 	struct device_node *np = dev->of_node;  in sti_cpufreq_fetch_syscon_registers()
246 	ddata.syscfg_eng = syscon_regmap_lookup_by_phandle(np, "st,syscfg-eng");  in sti_cpufreq_fetch_syscon_registers()
248 		dev_err(dev, "\"st,syscfg-eng\" not supplied\n");  in sti_cpufreq_fetch_syscon_registers()
262 		return -ENODEV;  in sti_cpufreq_init()
270 	if (!of_property_present(ddata.cpu->of_node, "operating-points-v2")) {  in sti_cpufreq_init()
271 		dev_err(ddata.cpu, "OPP-v2 not supported\n");  in sti_cpufreq_init()
287 	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);  in sti_cpufreq_init()