1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/nvmem-consumer.h>
62 	struct dev_pm_opp *opp;  in imx6q_set_target()  local
72 	opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_hz);  in imx6q_set_target()
73 	if (IS_ERR(opp)) {  in imx6q_set_target()
74 		dev_err(cpu_dev, "failed to find OPP for %ld\n", freq_hz);  in imx6q_set_target()
75 		return PTR_ERR(opp);  in imx6q_set_target()
78 	volt = dev_pm_opp_get_voltage(opp);  in imx6q_set_target()
79 	dev_pm_opp_put(opp);  in imx6q_set_target()
83 	dev_dbg(cpu_dev, "%u MHz, %ld mV --> %u MHz, %ld mV\n",  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()
194 	policy->clk = clks[ARM].clk;  in imx6q_cpufreq_init()
196 	policy->suspend_freq = max_freq;  in imx6q_cpufreq_init()
209 	.name = "imx6q-cpufreq",
218 	if (ret < 0 && ret != -ENODEV)  in imx6x_disable_freq_in_opp()
219 		dev_warn(dev, "failed to disable %ldMHz OPP\n", freq / 1000000);  in imx6x_disable_freq_in_opp()
233 	if (of_property_present(dev->of_node, "nvmem-cells")) {  in imx6q_opp_check_speed_grading()
240 		ocotp = syscon_regmap_lookup_by_compatible("fsl,imx6q-ocotp");  in imx6q_opp_check_speed_grading()
242 			return -ENOENT;  in imx6q_opp_check_speed_grading()
248 		 * 2b'01: 852000000Hz; -- i.MX6Q Only, exclusive with 996MHz.  in imx6q_opp_check_speed_grading()
249 		 * 2b'00: 792000000Hz;  in imx6q_opp_check_speed_grading()
282 	if (of_property_present(dev->of_node, "nvmem-cells")) {  in imx6ul_opp_check_speed_grading()
289 		ocotp = syscon_regmap_lookup_by_compatible("fsl,imx6ul-ocotp");  in imx6ul_opp_check_speed_grading()
291 			ocotp = syscon_regmap_lookup_by_compatible("fsl,imx6ull-ocotp");  in imx6ul_opp_check_speed_grading()
294 			return -ENOENT;  in imx6ul_opp_check_speed_grading()
303 	 * 2b'10: 696000000Hz on i.MX6UL, 792000000Hz on i.MX6ULL;  in imx6ul_opp_check_speed_grading()
316 			imx6x_disable_freq_in_opp(dev, 792000000);  in imx6ul_opp_check_speed_grading()
328 	struct dev_pm_opp *opp;  in imx6q_cpufreq_probe()  local
338 		return -ENODEV;  in imx6q_cpufreq_probe()
341 	np = of_node_get(cpu_dev->of_node);  in imx6q_cpufreq_probe()
344 		return -ENOENT;  in imx6q_cpufreq_probe()
360 	if (PTR_ERR(arm_reg) == -EPROBE_DEFER ||  in imx6q_cpufreq_probe()
361 			PTR_ERR(soc_reg) == -EPROBE_DEFER ||  in imx6q_cpufreq_probe()
362 			PTR_ERR(pu_reg) == -EPROBE_DEFER) {  in imx6q_cpufreq_probe()
363 		ret = -EPROBE_DEFER;  in imx6q_cpufreq_probe()
369 		ret = -ENOENT;  in imx6q_cpufreq_probe()
375 		dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);  in imx6q_cpufreq_probe()
393 		dev_err(cpu_dev, "no OPP table is found: %d\n", ret);  in imx6q_cpufreq_probe()
403 	/* Make imx6_soc_volt array's size same as arm opp number */  in imx6q_cpufreq_probe()
407 		ret = -ENOMEM;  in imx6q_cpufreq_probe()
411 	prop = of_find_property(np, "fsl,soc-operating-points", NULL);  in imx6q_cpufreq_probe()
412 	if (!prop || !prop->value)  in imx6q_cpufreq_probe()
416 	 * Each OPP is a set of tuples consisting of frequency and  in imx6q_cpufreq_probe()
417 	 * voltage like <freq-kHz vol-uV>.  in imx6q_cpufreq_probe()
419 	nr = prop->length / sizeof(u32);  in imx6q_cpufreq_probe()
424 		val = prop->value;  in imx6q_cpufreq_probe()
436 	/* use fixed soc opp volt if no valid soc opp info found in dtb */  in imx6q_cpufreq_probe()
438 …dev_warn(cpu_dev, "can NOT find valid fsl,soc-operating-points property in dtb, use default value!…  in imx6q_cpufreq_probe()
441 		if (freq_table[num - 1].frequency * 1000 == FREQ_1P2_GHZ)  in imx6q_cpufreq_probe()
442 			imx6_soc_volt[num - 1] = PU_SOC_VOLTAGE_HIGH;  in imx6q_cpufreq_probe()
445 	if (of_property_read_u32(np, "clock-latency", &transition_latency))  in imx6q_cpufreq_probe()
452 	ret = regulator_set_voltage_time(soc_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);  in imx6q_cpufreq_probe()
456 		ret = regulator_set_voltage_time(pu_reg, imx6_soc_volt[0], imx6_soc_volt[num - 1]);  in imx6q_cpufreq_probe()
462 	 * OPP is maintained in order of increasing frequency, and  in imx6q_cpufreq_probe()
463 	 * freq_table initialised from OPP is therefore sorted in the  in imx6q_cpufreq_probe()
466 	max_freq = freq_table[--num].frequency;  in imx6q_cpufreq_probe()
467 	opp = dev_pm_opp_find_freq_exact(cpu_dev,  in imx6q_cpufreq_probe()
469 	min_volt = dev_pm_opp_get_voltage(opp);  in imx6q_cpufreq_probe()
470 	dev_pm_opp_put(opp);  in imx6q_cpufreq_probe()
471 	opp = dev_pm_opp_find_freq_exact(cpu_dev, max_freq * 1000, true);  in imx6q_cpufreq_probe()
472 	max_volt = dev_pm_opp_get_voltage(opp);  in imx6q_cpufreq_probe()
473 	dev_pm_opp_put(opp);  in imx6q_cpufreq_probe()
522 		.name	= "imx6q-cpufreq",
529 MODULE_ALIAS("platform:imx6q-cpufreq");