2015-08-11 02:16:09

by Krzysztof Kozlowski

Subject: [PATCH] ARM: exynos_defconfig: Enable cpufreq-dt driver

With the latest patches the cpufreq-dt can be used on multiple
Exynos SoCs: 3250, 4210, 4212, 4412 and 5250.

Enable it along with default ondemand governor to conserve the energy,
reduce temperature while maintaining acceptable performance.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
---
arch/arm/configs/exynos_defconfig | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index 67965cedeb69..2263cd94cb93 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -27,6 +27,8 @@ CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC1,115200 init=/linuxrc mem=256M"
CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+CONFIG_CPUFREQ_DT=y
CONFIG_CPU_IDLE=y
CONFIG_ARM_EXYNOS_CPUIDLE=y
CONFIG_VFP=y
--
1.9.1

2015-08-11 05:54:39

by Javier Martinez Canillas

Subject: Re: [PATCH] ARM: exynos_defconfig: Enable cpufreq-dt driver

Hello Krzysztof,

On 08/11/2015 04:15 AM, Krzysztof Kozlowski wrote:
> With the latest patches the cpufreq-dt can be used on multiple
> Exynos SoCs: 3250, 4210, 4212, 4412 and 5250.
>
> Enable it along with default ondemand governor to conserve the energy,
> reduce temperature while maintaining acceptable performance.
>
> Signed-off-by: Krzysztof Kozlowski <[email protected]>
> ---
> arch/arm/configs/exynos_defconfig | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> index 67965cedeb69..2263cd94cb93 100644
> --- a/arch/arm/configs/exynos_defconfig
> +++ b/arch/arm/configs/exynos_defconfig
> @@ -27,6 +27,8 @@ CONFIG_ARM_APPENDED_DTB=y
> CONFIG_ARM_ATAG_DTB_COMPAT=y
> CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC1,115200 init=/linuxrc mem=256M"
> CONFIG_CPU_FREQ=y
> +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
> +CONFIG_CPUFREQ_DT=y
> CONFIG_CPU_IDLE=y
> CONFIG_ARM_EXYNOS_CPUIDLE=y
> CONFIG_VFP=y
>

Reviewed-by: Javier Martinez Canillas <[email protected]>

Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America

2015-08-11 07:51:41

by Kukjin Kim

Subject: RE: [PATCH] ARM: exynos_defconfig: Enable cpufreq-dt driver

Javier Martinez Canillas wrote:
>
> Hello Krzysztof,
>
> On 08/11/2015 04:15 AM, Krzysztof Kozlowski wrote:
> > With the latest patches the cpufreq-dt can be used on multiple
> > Exynos SoCs: 3250, 4210, 4212, 4412 and 5250.
> >
> > Enable it along with default ondemand governor to conserve the energy,
> > reduce temperature while maintaining acceptable performance.
> >
> > Signed-off-by: Krzysztof Kozlowski <[email protected]>
> > ---
> > arch/arm/configs/exynos_defconfig | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> > index 67965cedeb69..2263cd94cb93 100644
> > --- a/arch/arm/configs/exynos_defconfig
> > +++ b/arch/arm/configs/exynos_defconfig
> > @@ -27,6 +27,8 @@ CONFIG_ARM_APPENDED_DTB=y
> > CONFIG_ARM_ATAG_DTB_COMPAT=y
> > CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC1,115200
> init=/linuxrc mem=256M"
> > CONFIG_CPU_FREQ=y
> > +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
> > +CONFIG_CPUFREQ_DT=y
> > CONFIG_CPU_IDLE=y
> > CONFIG_ARM_EXYNOS_CPUIDLE=y
> > CONFIG_VFP=y
> >
>
> Reviewed-by: Javier Martinez Canillas <[email protected]>
>
Thanks, applied.

- Kukjin