The new CPU clock type allows the use of generic CPUfreq drivers. So for
Exynos4210/5250, switch to using generic cpufreq driver. For Exynos5420,
which did not have CPUfreq driver support, enable the use of generic
CPUfreq driver.
Suggested-by: Tomasz Figa <tomasz.figa@xxxxxxxxx>
Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
Reviewed-by: Tomasz Figa <tomasz.figa@xxxxxxxxx>
Tested-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
Tested-by: Chander Kashyap <k.chander@xxxxxxxxxxx>
---
arch/arm/mach-exynos/exynos.c | 24 +++++++++++++++++++++++-
1 files changed, 23 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index b89e5f3..c3b6b5d 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -280,6 +280,28 @@ static void __init exynos_init_irq(void)
exynos_map_pmu();
}
+static const struct of_device_id exynos_cpufreq_matches[] = {
+ { .compatible = "samsung,exynos5420", .data = "arm-bL-cpufreq-dt" },
+ { .compatible = "samsung,exynos5250", .data = "cpufreq-cpu0" },
+ { .compatible = "samsung,exynos4210", .data = "cpufreq-cpu0" },
+ { .compatible = "samsung,exynos5440", .data = "exynos5440-cpufreq" },
+ { /* 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)
{
struct device_node *i2c_np;
@@ -319,7 +341,7 @@ 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);
}
--
1.6.6.rc2
--
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