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Diffstat (limited to 'arch/arm/mach-shmobile/cpufreq.c')
-rw-r--r--arch/arm/mach-shmobile/cpufreq.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/cpufreq.c b/arch/arm/mach-shmobile/cpufreq.c
new file mode 100644
index 000000000000..e2c868fc41cf
--- /dev/null
+++ b/arch/arm/mach-shmobile/cpufreq.c
@@ -0,0 +1,31 @@
+/*
+ * CPUFreq support code for SH-Mobile ARM
+ *
+ * Copyright (C) 2014 Gaku Inami
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+int __init shmobile_cpufreq_init(void)
+{
+ struct device_node *np;
+
+ np = of_cpu_device_node_get(0);
+ if (np == NULL) {
+ pr_err("failed to find cpu0 node\n");
+ return 0;
+ }
+
+ if (of_get_property(np, "operating-points", NULL))
+ platform_device_register_simple("cpufreq-cpu0", -1, NULL, 0);
+
+ of_node_put(np);
+
+ return 0;
+}