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SubjectRe: [PATCH 5/8] ARM: Exynos: use generic cpufreq driver for Exynos5420
Hi Bartlomiej,

> From: Thomas Abraham <thomas.ab@samsung.com>
>
> The new CPU clock type allows the use of generic arm_big_little_dt
> cpufreq driver for Exynos5420.
>
> Changes by Bartlomiej:
> - split Exynos5420 support from the original patch
> - disable cpufreq if big.LITTLE switcher support is enabled
>
> Cc: Tomasz Figa <tomasz.figa@gmail.com>
> Cc: Kukjin Kim <kgene.kim@samsung.com>
> Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---
> arch/arm/mach-exynos/exynos.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/mach-exynos/exynos.c
> b/arch/arm/mach-exynos/exynos.c index 4b03a32..11ac7fb 100644
> --- a/arch/arm/mach-exynos/exynos.c
> +++ b/arch/arm/mach-exynos/exynos.c
> @@ -207,6 +207,13 @@ struct cpufreq_dt_platform_data cpufreq_dt_pd = {
> static const struct of_device_id exynos_cpufreq_matches[] = {
> { .compatible = "samsung,exynos4210", .data = "cpufreq-dt" },
> { .compatible = "samsung,exynos5250", .data = "cpufreq-dt" },
> +/*
> + * FIXME: When big.LITTLE switcher is enabled system lockups during
> + * ondemand governor stress testing (observed on ODROID-XU3 board).
> + */
> +#ifndef CONFIG_BL_SWITCHER
> + { .compatible = "samsung,exynos5420", .data =
> "arm-bL-cpufreq-dt" }, +#endif
> { /* sentinel */ }
> };
>

Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>

--
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group


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