[v8,4/6] ARM: Exynos: switch to using generic cpufreq driver for Exynos4210/5250/5420

Message ID 1406611711-25112-5-git-send-email-thomas.ab@samsung.com
State New
Headers show

Commit Message

Thomas Abraham July 29, 2014, 5:28 a.m.
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 <t.figa@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
---
 arch/arm/mach-exynos/exynos.c |   24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

Comments

Tomasz Figa July 29, 2014, 10:32 a.m. | #1
On 29.07.2014 07:28, Thomas Abraham wrote:
> 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 <t.figa@samsung.com>
> Cc: Kukjin Kim <kgene.kim@samsung.com>
> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
> ---
>  arch/arm/mach-exynos/exynos.c |   24 +++++++++++++++++++++++-
>  1 file changed, 23 insertions(+), 1 deletion(-)

Reviewed-by: Tomasz Figa <t.figa@samsung.com>

Best regards,
Tomasz
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Patch

diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index df41bd1..4d7be5e 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -279,6 +279,28 @@  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;
@@ -318,7 +340,7 @@  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);
 }