1 // SPDX-License-Identifier: GPL-2.0-only
6  * CPU frequency scaling for S5PC110/S5PV210
194  * ch: DMC port number 0 or 1
207 		pr_err("Cannot find DMC port\n");  in s5pv210_set_refresh()
238 		ret = -EINVAL;  in s5pv210_target()
242 	old_freq = policy->cur;  in s5pv210_target()
287 	 * APLL -> MPLL(for stable transition) -> APLL  in s5pv210_target()
294 		 * SCLKA2M(200/1=200)->(200/4=50)Mhz  in s5pv210_target()
309 		 * (200/4=50)->(667/4=166)Mhz  in s5pv210_target()
329 		/* 4. SCLKAPLL -> SCLKMPLL */  in s5pv210_target()
380 		 * 6-1. Set PMS values  in s5pv210_target()
381 		 * 6-2. Wait until the PLL is locked  in s5pv210_target()
395 		 * (667/4=166)->(200/4=50)Mhz  in s5pv210_target()
409 		 * (200/4=50)->(200/1=200)Mhz  in s5pv210_target()
503 	policy->clk = clk_get(NULL, "armclk");  in s5pv210_cpu_init()
504 	if (IS_ERR(policy->clk))  in s5pv210_cpu_init()
505 		return PTR_ERR(policy->clk);  in s5pv210_cpu_init()
519 	if (policy->cpu != 0) {  in s5pv210_cpu_init()
520 		ret = -EINVAL;  in s5pv210_cpu_init()
532 		ret = -EINVAL;  in s5pv210_cpu_init()
536 	/* Find current refresh counter and frequency each DMC */  in s5pv210_cpu_init()
543 	policy->suspend_freq = SLEEP_FREQ;  in s5pv210_cpu_init()
550 	clk_put(policy->clk);  in s5pv210_cpu_init()
582 	.name		= "s5pv210",
593 	struct device *dev = &pdev->dev;  in s5pv210_cpufreq_probe()
599 	 * and DMC controller registers directly and remove static mappings  in s5pv210_cpufreq_probe()
601 	 * S5PV210 multi-platform support and will be removed together with  in s5pv210_cpufreq_probe()
602 	 * this whole driver as soon as S5PV210 gets migrated to use  in s5pv210_cpufreq_probe()
603 	 * cpufreq-dt driver.  in s5pv210_cpufreq_probe()
617 	np = of_find_compatible_node(NULL, NULL, "samsung,s5pv210-clock");  in s5pv210_cpufreq_probe()
620 		result = -ENODEV;  in s5pv210_cpufreq_probe()
628 		result = -EFAULT;  in s5pv210_cpufreq_probe()
632 	for_each_compatible_node(np, NULL, "samsung,s5pv210-dmc") {  in s5pv210_cpufreq_probe()
633 		id = of_alias_get_id(np, "dmc");  in s5pv210_cpufreq_probe()
635 			dev_err(dev, "failed to get alias of dmc node '%pOFn'\n", np);  in s5pv210_cpufreq_probe()
643 			dev_err(dev, "failed to map dmc%d registers\n", id);  in s5pv210_cpufreq_probe()
645 			result = -EFAULT;  in s5pv210_cpufreq_probe()
652 			dev_err(dev, "failed to find dmc%d node\n", id);  in s5pv210_cpufreq_probe()
653 			result = -ENODEV;  in s5pv210_cpufreq_probe()
683 		.name	= "s5pv210-cpufreq",