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()
65 		dev_err(dev, "No major number offset provided in %pOF [%d]\n",  in sti_cpufreq_fetch_major()
72 		dev_err(dev, "Failed to read major number from syscon [%d]\n",  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()
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
166 		return -ENODEV;  in sti_cpufreq_set_opp_info()
169 	ret = of_property_read_u32_index(np, "st,syscfg-eng",  in sti_cpufreq_set_opp_info()
197 	major = sti_cpufreq_fetch_major();  in sti_cpufreq_set_opp_info()
198 	if (major < 0) {  in sti_cpufreq_set_opp_info()
199 		dev_err(dev, "Failed to obtain major version\n");  in sti_cpufreq_set_opp_info()
200 		/* Use default major number */  in sti_cpufreq_set_opp_info()
201 		major = DEFAULT_VERSION;  in sti_cpufreq_set_opp_info()
206 		dev_err(dev, "Failed to obtain minor version\n");  in sti_cpufreq_set_opp_info()
219 	version[0] = BIT(major);  in sti_cpufreq_set_opp_info()
220 	version[1] = BIT(minor);  in sti_cpufreq_set_opp_info()
221 	version[2] = BIT(substrate);  in sti_cpufreq_set_opp_info()
223 	opp_table = dev_pm_opp_set_supported_hw(dev, version, VERSION_ELEMENTS);  in sti_cpufreq_set_opp_info()
229 	dev_dbg(dev, "pcode: %d major: %d minor: %d substrate: %d\n",  in sti_cpufreq_set_opp_info()
230 		pcode, major, minor, substrate);  in sti_cpufreq_set_opp_info()
231 	dev_dbg(dev, "version[0]: %x version[1]: %x version[2]: %x\n",  in sti_cpufreq_set_opp_info()
232 		version[0], version[1], version[2]);  in sti_cpufreq_set_opp_info()
240 	struct device_node *np = dev->of_node;  in sti_cpufreq_fetch_syscon_registers()
248 	ddata.syscfg_eng = syscon_regmap_lookup_by_phandle(np, "st,syscfg-eng");  in sti_cpufreq_fetch_syscon_registers()
250 		dev_err(dev, "\"st,syscfg-eng\" not supplied\n");  in sti_cpufreq_fetch_syscon_registers()
264 		return -ENODEV;  in sti_cpufreq_init()
272 	if (!of_get_property(ddata.cpu->of_node, "operating-points-v2", NULL)) {  in sti_cpufreq_init()
273 		dev_err(ddata.cpu, "OPP-v2 not supported\n");  in sti_cpufreq_init()
289 	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);  in sti_cpufreq_init()