[PATCH 5/6] ARM: Exynos: switch to using generic cpufreq driver for Exynos4210

[Bartlomiej Zolnierkiewicz]

From: Thomas Abraham <thomas.ab at samsung.com>

The new CPU clock type allows the use of generic CPUfreq driver.
Switch Exynos4210 to using generic cpufreq driver.

Changes by Bartlomiej:
- removed non-Exynos4210 support for now

Cc: Tomasz Figa <tomasz.figa at gmail.com>
Cc: Kukjin Kim <kgene.kim at samsung.com>
Cc: Javier Martinez Canillas <javier.martinez at collabora.co.uk>
Signed-off-by: Thomas Abraham <thomas.ab at samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
---
 arch/arm/mach-exynos/exynos.c |   21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index bcde0dd..4e13de5 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -197,6 +197,25 @@ static void __init exynos_init_irq(void)
 	exynos_map_pmu();
 }
 
+static const struct of_device_id exynos_cpufreq_matches[] = {
+	{ .compatible = "samsung,exynos4210", .data = "cpufreq-dt" },
+	{ /* sentinel */ }
+};
+
+static void __init exynos_cpufreq_init(void)
+{
+	struct device_node *root = of_find_node_by_path("/");
+	const struct of_device_id *match;
+
+	match = of_match_node(exynos_cpufreq_matches, root);
+	if (!match) {
+		platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
+		return;
+	}
+
+	platform_device_register_simple(match->data, -1, NULL, 0);
+}
+
 static void __init exynos_dt_machine_init(void)
 {
 	/*
@@ -218,7 +237,7 @@ static void __init exynos_dt_machine_init(void)
 	    of_machine_is_compatible("samsung,exynos5250"))
 		platform_device_register(&exynos_cpuidle);
 
-	platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
+	exynos_cpufreq_init();
 
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
-- 
1.7.9.5