linux-kernel - Re: [PATCH v4 4/6] clocksource: exynos_mct: Add arch

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Message-ID: <CAJKOXPfE9cYZ1Wh1yYWH=utvVWO2YndHO9yY8KLLcJ+A=XkKMw@mail.gmail.com>
Date:   Fri, 19 Oct 2018 09:44:07 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        will.deacon@....com, catalin.marinas@....com, marc.zyngier@....com,
        tglx@...utronix.de, daniel.lezcano@...aro.org,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>, Inki Dae <inki.dae@...sung.com>,
        mark.rutland@....com
Subject: Re: [PATCH v4 4/6] clocksource: exynos_mct: Add arch_timer
 cooperation mode for ARM64

On Thu, 18 Oct 2018 at 11:57, Marek Szyprowski <m.szyprowski@...sung.com> wrote:
>
> To get ARM Architected Timers working on Samsung Exynos SoCs, one has to
> first configure and enable Exynos Multi-Core Timer, because they both
> share some common hardware blocks (global system counter). This patch
> adds a mode of cooperation with arch_timer driver, so kernel can use
> CP15 based timer interface via arch_timer driver, which is mandatory
> on ARM64. In such mode MCT driver only enables its clocks and starts
> global timer. Everything else will be handled by arch_timer driver.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
> Tested-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
>  drivers/clocksource/exynos_mct.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof