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[PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher

Started byBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
First post2016-04-28 16:50 +0200
Last post2016-04-29 14:10 +0200
Articles 5 — 5 participants

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  [PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> - 2016-04-28 16:50 +0200
    Re: [PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher Markus Reichl <m.reichl@fivetechno.de> - 2016-04-28 17:00 +0200
    Re: [PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher Javier Martinez Canillas <javier@osg.samsung.com> - 2016-04-28 18:10 +0200
    Re: [PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher Anand Moon <linux.amoon@gmail.com> - 2016-04-28 19:50 +0200
    Re: [PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-04-29 14:10 +0200

#1390278 — [PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher

FromBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Date2016-04-28 16:50 +0200
Subject[PATCH] ARM: exynos_defconfig: Disable big.LITTLE switcher
Message-ID<rsVqq-4Us-23@gated-at.bofh.it>
Disable big.LITTLE switcher in order to allow automatic usage of
cpufreq-dt driver on Exynos542x/Exynos5800 SoCs based boards.

This change should not cause any problems as arm_big_little[_dt]
driver (which is using big.LITTLE switcher support to do the "real"
big.LITTLE switching work) is not used on any Exynos SoC based
board currently.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
 arch/arm/configs/exynos_defconfig | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index a8cf295..07d4168 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -13,8 +13,6 @@ CONFIG_ARCH_EXYNOS3=y
 CONFIG_EXYNOS5420_MCPM=y
 CONFIG_SMP=y
 CONFIG_BIG_LITTLE=y
-CONFIG_BL_SWITCHER=y
-CONFIG_BL_SWITCHER_DUMMY_IF=y
 CONFIG_NR_CPUS=8
 CONFIG_PREEMPT=y
 CONFIG_AEABI=y
-- 
1.9.1

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#1390280

FromMarkus Reichl <m.reichl@fivetechno.de>
Date2016-04-28 17:00 +0200
Message-ID<rsVA6-50h-5@gated-at.bofh.it>
In reply to#1390278
Hi Bartlomiej,

Tested on Odroid XU3 and XU4.

Tested-by: Markus Reichl <m.reichl@fivetechno.de>

Am 28.04.2016 um 16:44 schrieb Bartlomiej Zolnierkiewicz:
> Disable big.LITTLE switcher in order to allow automatic usage of
> cpufreq-dt driver on Exynos542x/Exynos5800 SoCs based boards.
> 
> This change should not cause any problems as arm_big_little[_dt]
> driver (which is using big.LITTLE switcher support to do the "real"
> big.LITTLE switching work) is not used on any Exynos SoC based
> board currently.
> 
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---
>  arch/arm/configs/exynos_defconfig | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> index a8cf295..07d4168 100644
> --- a/arch/arm/configs/exynos_defconfig
> +++ b/arch/arm/configs/exynos_defconfig
> @@ -13,8 +13,6 @@ CONFIG_ARCH_EXYNOS3=y
>  CONFIG_EXYNOS5420_MCPM=y
>  CONFIG_SMP=y
>  CONFIG_BIG_LITTLE=y
> -CONFIG_BL_SWITCHER=y
> -CONFIG_BL_SWITCHER_DUMMY_IF=y
>  CONFIG_NR_CPUS=8
>  CONFIG_PREEMPT=y
>  CONFIG_AEABI=y
> 

Thanks,
--
Markus Reichl

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#1390356

FromJavier Martinez Canillas <javier@osg.samsung.com>
Date2016-04-28 18:10 +0200
Message-ID<rsWFQ-6n2-13@gated-at.bofh.it>
In reply to#1390278
Hello Bartlomiej,

On 04/28/2016 10:44 AM, Bartlomiej Zolnierkiewicz wrote:
> Disable big.LITTLE switcher in order to allow automatic usage of
> cpufreq-dt driver on Exynos542x/Exynos5800 SoCs based boards.
> 
> This change should not cause any problems as arm_big_little[_dt]
> driver (which is using big.LITTLE switcher support to do the "real"
> big.LITTLE switching work) is not used on any Exynos SoC based
> board currently.
> 
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---

Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>

On an Exynos5422 Odroid XU4 and Exynos5800 Peach Pi Chromebook:

Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>

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

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#1390423

FromAnand Moon <linux.amoon@gmail.com>
Date2016-04-28 19:50 +0200
Message-ID<rsYeD-7Pw-17@gated-at.bofh.it>
In reply to#1390278
Hi Bartlomiej,

On 28 April 2016 at 20:14, Bartlomiej Zolnierkiewicz
<b.zolnierkie@samsung.com> wrote:
> Disable big.LITTLE switcher in order to allow automatic usage of
> cpufreq-dt driver on Exynos542x/Exynos5800 SoCs based boards.
>
> This change should not cause any problems as arm_big_little[_dt]
> driver (which is using big.LITTLE switcher support to do the "real"
> big.LITTLE switching work) is not used on any Exynos SoC based
> board currently.
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---
>  arch/arm/configs/exynos_defconfig | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> index a8cf295..07d4168 100644
> --- a/arch/arm/configs/exynos_defconfig
> +++ b/arch/arm/configs/exynos_defconfig
> @@ -13,8 +13,6 @@ CONFIG_ARCH_EXYNOS3=y
>  CONFIG_EXYNOS5420_MCPM=y
>  CONFIG_SMP=y
>  CONFIG_BIG_LITTLE=y
> -CONFIG_BL_SWITCHER=y
> -CONFIG_BL_SWITCHER_DUMMY_IF=y
>  CONFIG_NR_CPUS=8
>  CONFIG_PREEMPT=y
>  CONFIG_AEABI=y
> --
> 1.9.1
>

Tested On Odroid XU4.

Reviewed-by: Anand Moon <linux.amoon@gmail.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>

Best Regards
-Anand Moon

>
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#1391042

FromKrzysztof Kozlowski <k.kozlowski@samsung.com>
Date2016-04-29 14:10 +0200
Message-ID<rtfp7-5Kx-15@gated-at.bofh.it>
In reply to#1390278
On 04/28/2016 04:44 PM, Bartlomiej Zolnierkiewicz wrote:
> Disable big.LITTLE switcher in order to allow automatic usage of
> cpufreq-dt driver on Exynos542x/Exynos5800 SoCs based boards.
> 
> This change should not cause any problems as arm_big_little[_dt]
> driver (which is using big.LITTLE switcher support to do the "real"
> big.LITTLE switching work) is not used on any Exynos SoC based
> board currently.
> 
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---
>  arch/arm/configs/exynos_defconfig | 2 --
>  1 file changed, 2 deletions(-)

I agree. I pushed out my queue and I do not plan to push 3rd round so
this will wait till v4.8.

Anyway:
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

Best regards,
Krzysztof

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