[PATCH v3 3/5] ARM: Exynos: switch to using generic cpufreq driver for Exynos4x12

Bartlomiej Zolnierkiewicz b.zolnierkie at samsung.com
Fri Jul 31 11:49:15 PDT 2015


The new CPU clock type allows the use of generic CPUfreq driver.
Switch Exynos4x12 to using generic cpufreq driver.

Also make CPUFREQ_DT config option select Exynos thermal driver
if Exynos platform support is enabled.

Please also note that the switch to use the generic cpufreq-dt
driver fixes the minor issue present with the old code (support
for 'boost' mode in the exynos-cpufreq driver was enabled for
all supported SoCs even though 'boost' frequency was provided
only for Exynos4x12 ones).

Cc: Tomasz Figa <tomasz.figa at gmail.com>
Cc: Kukjin Kim <kgene.kim at samsung.com>
Cc: Thomas Abraham <thomas.ab at samsung.com>
Cc: Javier Martinez Canillas <javier at osg.samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
---
 arch/arm/mach-exynos/exynos.c | 2 ++
 drivers/cpufreq/Kconfig       | 1 +
 2 files changed, 3 insertions(+)

diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 77ac021..1c47aee 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -227,6 +227,8 @@ static void __init exynos_init_irq(void)
 static const struct of_device_id exynos_cpufreq_matches[] = {
 	{ .compatible = "samsung,exynos3250", .data = "cpufreq-dt" },
 	{ .compatible = "samsung,exynos4210", .data = "cpufreq-dt" },
+	{ .compatible = "samsung,exynos4212", .data = "cpufreq-dt" },
+	{ .compatible = "samsung,exynos4412", .data = "cpufreq-dt" },
 	{ .compatible = "samsung,exynos5250", .data = "cpufreq-dt" },
 	{ /* sentinel */ }
 };
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 659879a..bf6d596 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -191,6 +191,7 @@ config CPUFREQ_DT
 	# if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y:
 	depends on !CPU_THERMAL || THERMAL
 	select PM_OPP
+	select EXYNOS_THERMAL if ARCH_EXYNOS
 	help
 	  This adds a generic DT based cpufreq driver for frequency management.
 	  It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
-- 
1.9.1




More information about the linux-arm-kernel mailing list