1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/nvmem-consumer.h>
83 	dev_dbg(cpu_dev, "%u MHz, %ld mV --> %u MHz, %ld mV\n",  in imx6q_set_target()
87 	/* scaling up?  scale voltage before frequency */  in imx6q_set_target()
111 	 * reprogram PLL for frequency scaling.  The procedure of reprogramming  in imx6q_set_target()
116 	 *  - Enable pll2_pfd2_396m_clk and reparent pll1_sw_clk to it  in imx6q_set_target()
117 	 *  - Reprogram pll1_sys_clk and reparent pll1_sw_clk back to it  in imx6q_set_target()
118 	 *  - Disable pll2_pfd2_396m_clk  in imx6q_set_target()
169 	/* PLL1 is only needed until after ARM-PODF is set. */  in imx6q_set_target()
173 	/* scaling down?  scale voltage after frequency */  in imx6q_set_target()
178 				 "failed to scale vddarm down: %d\n", ret);  in imx6q_set_target()
181 			dev_warn(cpu_dev, "failed to scale vddsoc down: %d\n", ret);  in imx6q_set_target()
185 				dev_warn(cpu_dev, "failed to scale vddpu down: %d\n", ret);  in imx6q_set_target()
194 	policy->clk = clks[ARM].clk;  in imx6q_cpufreq_init()
196 	policy->suspend_freq = max_freq;  in imx6q_cpufreq_init()
209 	.name = "imx6q-cpufreq",
217 	if (ret < 0 && ret != -ENODEV)  in imx6x_disable_freq_in_opp()
232 	if (of_property_present(dev->of_node, "nvmem-cells")) {  in imx6q_opp_check_speed_grading()
239 		ocotp = syscon_regmap_lookup_by_compatible("fsl,imx6q-ocotp");  in imx6q_opp_check_speed_grading()
241 			return -ENOENT;  in imx6q_opp_check_speed_grading()
247 		 * 2b'01: 852000000Hz; -- i.MX6Q Only, exclusive with 996MHz.  in imx6q_opp_check_speed_grading()
281 	if (of_property_present(dev->of_node, "nvmem-cells")) {  in imx6ul_opp_check_speed_grading()
288 		ocotp = syscon_regmap_lookup_by_compatible("fsl,imx6ul-ocotp");  in imx6ul_opp_check_speed_grading()
290 			ocotp = syscon_regmap_lookup_by_compatible("fsl,imx6ull-ocotp");  in imx6ul_opp_check_speed_grading()
293 			return -ENOENT;  in imx6ul_opp_check_speed_grading()
337 		return -ENODEV;  in imx6q_cpufreq_probe()
340 	np = of_node_get(cpu_dev->of_node);  in imx6q_cpufreq_probe()
343 		return -ENOENT;  in imx6q_cpufreq_probe()
359 	if (PTR_ERR(arm_reg) == -EPROBE_DEFER ||  in imx6q_cpufreq_probe()
360 			PTR_ERR(soc_reg) == -EPROBE_DEFER ||  in imx6q_cpufreq_probe()
361 			PTR_ERR(pu_reg) == -EPROBE_DEFER) {  in imx6q_cpufreq_probe()
362 		ret = -EPROBE_DEFER;  in imx6q_cpufreq_probe()
368 		ret = -ENOENT;  in imx6q_cpufreq_probe()
406 		ret = -ENOMEM;  in imx6q_cpufreq_probe()
410 	prop = of_find_property(np, "fsl,soc-operating-points", NULL);  in imx6q_cpufreq_probe()
411 	if (!prop || !prop->value)  in imx6q_cpufreq_probe()
416 	 * voltage like <freq-kHz vol-uV>.  in imx6q_cpufreq_probe()
418 	nr = prop->length / sizeof(u32);  in imx6q_cpufreq_probe()
423 		val = prop->value;  in imx6q_cpufreq_probe()
437 …dev_warn(cpu_dev, "can NOT find valid fsl,soc-operating-points property in dtb, use default value!…  in imx6q_cpufreq_probe()
440 		if (freq_table[num - 1].frequency * 1000 == FREQ_1P2_GHZ)  in imx6q_cpufreq_probe()
441 			imx6_soc_volt[num - 1] = PU_SOC_VOLTAGE_HIGH;  in imx6q_cpufreq_probe()
444 	if (of_property_read_u32(np, "clock-latency", &transition_latency))  in imx6q_cpufreq_probe()
451 	ret = regulator_set_voltage_time(soc_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);  in imx6q_cpufreq_probe()
455 		ret = regulator_set_voltage_time(pu_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);  in imx6q_cpufreq_probe()
465 	max_freq = freq_table[--num].frequency;  in imx6q_cpufreq_probe()
521 		.name	= "imx6q-cpufreq",
528 MODULE_ALIAS("platform:imx6q-cpufreq");