linux-kernel - Re: [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer

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Date:   Wed, 21 Dec 2016 17:21:05 +0300
From:   Alexander Kochetkov <al.kochet@...il.com>
To:     LKML <linux-kernel@...r.kernel.org>, devicetree@...r.kernel.org,
        LAK <linux-arm-kernel@...ts.infradead.org>,
        linux-rockchip@...ts.infradead.org,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Caesar Wang <wxt@...k-chips.com>,
        Huang Tao <huangtao@...k-chips.com>
Subject: Re: [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer

Hello Heiko, Daniel!

Are there any reasons why the patches [1][2] are not applied yet into kernel?
How can I help in applying patches?

Regards,
Alexander.

[1] http://lists.infradead.org/pipermail/linux-rockchip/2016-November/thread.html#13236
     [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer 
[2] http://lists.infradead.org/pipermail/linux-rockchip/2016-December/013308.html 


> 29 нояб. 2016 г., в 19:14, Alexander Kochetkov <al.kochet@...il.com> написал(а):
> 
> Hello,
> 
> This patch series contain:
> - devicetree bindings clarification for rockchip timers
> - dts files fixes for rk3228-evb, rk3229-evb and rk3188
> - implementation of clocksource and sched clock for rockchip SoC
> 
> The clock supplying the arm-global-timer on the rk3188 is coming from the
> the cpu clock itself and thus changes its rate everytime cpufreq adjusts
> the cpu frequency making this timer unsuitable as a stable clocksource.
> 
> The rk3188, rk3288 and following socs share a separate timer block already
> handled by the rockchip-timer driver. Therefore adapt this driver to also
> be able to act as clocksource on rk3188.
> 
> In order to test clocksource you can run following commands and check
> how much time it take in real. On rk3188 it take about ~45 seconds.
> 
>        cpufreq-set -f 1.6GHZ
>        date; sleep 60; date
> 
> rk3288 (and probably anything newer) is irrelevant to this patch,
> as it has the arch timer interface. This patch may be usefull
> for Cortex-A9/A5 based parts.
> 
> Regards,
> Alexander.
> 
> This is try 4. Please discard all v1, v2, v3 patches.
> 
> Changes in v4:
> merged 7 and 8 from series 3
> merged 10, 11, 12, 13 from series 3
> fixed commit message
> 
> Changes in v3:
> added patches:
> ARM: dts: rockchip: disable arm-global-timer for rk3188
> clocksource/drivers/rockchip_timer: Prevent ftrace recursion
> 
> devicetree v1 patches:
> https://patchwork.ozlabs.org/patch/699019/
> https://patchwork.ozlabs.org/patch/699020/
> 
> kernel v1 patches:
> https://patchwork.kernel.org/patch/9443975/
> https://patchwork.kernel.org/patch/9443971/
> https://patchwork.kernel.org/patch/9443959/
> https://patchwork.kernel.org/patch/9443963/
> https://patchwork.kernel.org/patch/9443979/
> https://patchwork.kernel.org/patch/9443989/
> https://patchwork.kernel.org/patch/9443987/
> https://patchwork.kernel.org/patch/9443977/
> https://patchwork.kernel.org/patch/9443991/
> 
> Alexander Kochetkov (9):
>  dt-bindings: clarify compatible property for rockchip timers
>  ARM: dts: rockchip: update compatible property for rk3228 timer
>  ARM: dts: rockchip: update compatible property for rk3229 timer
>  ARM: dts: rockchip: add timer entries to rk3188 SoC
>  ARM: dts: rockchip: disable arm-global-timer for rk3188
>  clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and
>    rk_clock_event_device
>  clocksource/drivers/rockchip_timer: low level routines take rk_timer
>    as parameter
>  clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of
>    rk_timer_enable()
>  clocksource/drivers/rockchip_timer: implement clocksource timer
> 
> .../bindings/timer/rockchip,rk-timer.txt           |   12 +-
> arch/arm/boot/dts/rk3188.dtsi                      |   17 ++
> arch/arm/boot/dts/rk3228-evb.dts                   |    4 +
> arch/arm/boot/dts/rk3229-evb.dts                   |    4 +
> drivers/clocksource/rockchip_timer.c               |  207 +++++++++++++++-----
> 5 files changed, 190 insertions(+), 54 deletions(-)
> 
> -- 
> 1.7.9.5
>