// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2009 Lemote Inc. * Author: Wu Zhangjin, wuzhangjin@gmail.com */ #include <linux/err.h> #include <linux/smp.h> #include <linux/platform_device.h> static struct platform_device loongson2_cpufreq_device = { .name = "loongson2_cpufreq", .id = -1, }; static int __init loongson2_cpufreq_init(void) { struct cpuinfo_mips *c = ¤t_cpu_data; /* Only 2F revision and it's successors support CPUFreq */ if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON2F) return platform_device_register(&loongson2_cpufreq_device); return -ENODEV; } arch_initcall(loongson2_cpufreq_init);