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Groups > linux.kernel > #1532281
| From | Alexander Kochetkov <al.kochet@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 00/13] Implement clocksource for rockchip SoC using rockchip timer |
| Date | 2016-11-29 14:50 +0100 |
| Message-ID | <sIQXf-F4-1@gated-at.bofh.it> (permalink) |
| References | <sIvg5-3iM-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hello,
This patch series contain:
- devicetree bindings clarification for rockchip timers
- dts files fixes for rk3228-evb, rk3229-evb and rk3188
- implementation of clocksource 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.
Such error cannot be fixed using NTP. Haven't test clocksource
on rk3288 and onwards. Guess they can also have unstable clocksource.
cpufreq-set -f 1.6GHZ
date; sleep 60; date
Regards,
Alexander.
Changes in v3:
added patches:
ARM: dts: rockchip: disable arm-global-timer for rk3188
clocksource/drivers/rockchip_timer: Prevent ftrace recursion
This is try 3. Please discard all v1 patches:
devicetree:
https://patchwork.ozlabs.org/patch/699019/
https://patchwork.ozlabs.org/patch/699020/
kernel:
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/
Old thread:
http://lists.infradead.org/pipermail/linux-rockchip/2016-November/013147.html
Alexander Kochetkov (13):
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 dtsi
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: drop unused rk_base() and
rk_ctrl()
clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of
rk_timer_enable()
clocksource/drivers/rockchip_timer: implement loading 64bit value
into timer
clocksource/drivers/rockchip_timer: implement reading 64bit value
from timer
clocksource/drivers/rockchip_timer: implement clocksource timer
clocksource/drivers/rockchip_timer: Prevent ftrace recursion
.../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
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[PATCHv2 00/11] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-28 15:40 +0100
[PATCHv2 11/11] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-28 15:40 +0100
[PATCHv2 06/11] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-28 15:40 +0100
[PATCHv2 08/11] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-28 15:40 +0100
[PATCHv2 01/11] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-28 15:40 +0100
[PATCHv2 10/11] clocksource/drivers/rockchip_timer: implement reading 64bit value from timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-28 15:40 +0100
[PATCH v3 00/13] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 10/13] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 11/13] clocksource/drivers/rockchip_timer: implement reading 64bit value from timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 02/13] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 03/13] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 09/13] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 04/13] ARM: dts: rockchip: add timer entries to rk3188 dtsi Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 13/13] clocksource/drivers/rockchip_timer: Prevent ftrace recursion Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
Re: [PATCH v3 13/13] clocksource/drivers/rockchip_timer: Prevent ftrace recursion Heiko Stübner <heiko@sntech.de> - 2016-11-29 16:10 +0100
Re: [PATCH v3 13/13] clocksource/drivers/rockchip_timer: Prevent ftrace recursion Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 16:40 +0100
[PATCH v3 05/13] ARM: dts: rockchip: disable arm-global-timer for rk3188 Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 07/13] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 12/13] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 01/13] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 06/13] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
[PATCH v3 08/13] clocksource/drivers/rockchip_timer: drop unused rk_base() and rk_ctrl() Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 14:50 +0100
Re: [PATCH v3 08/13] clocksource/drivers/rockchip_timer: drop unused rk_base() and rk_ctrl() Heiko Stübner <heiko@sntech.de> - 2016-11-29 16:10 +0100
[PATCH v4 5/9] ARM: dts: rockchip: disable arm-global-timer for rk3188 Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 6/9] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 3/9] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 9/9] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 2/9] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 7/9] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 4/9] ARM: dts: rockchip: add timer entries to rk3188 SoC Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 8/9] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
[PATCH v4 1/9] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
Re: [PATCH v4 1/9] dt-bindings: clarify compatible property for rockchip timers Rob Herring <robh@kernel.org> - 2016-12-05 23:30 +0100
[PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov <al.kochet@gmail.com> - 2016-11-29 17:20 +0100
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