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* [PATCHv2 00/11] Implement clocksource for rockchip SoC using rockchip timer
@ 2016-11-28 14:31 Alexander Kochetkov
  2016-11-28 14:31 ` [PATCHv2 01/11] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
                   ` (12 more replies)
  0 siblings, 13 replies; 54+ messages in thread
From: Alexander Kochetkov @ 2016-11-28 14:31 UTC (permalink / raw)
  To: linux-kernel, devicetree, linux-arm-kernel, linux-rockchip
  Cc: Thomas Gleixner, Heiko Stuebner, Mark Rutland, Rob Herring,
	Russell King, Caesar Wang, Huang Tao, Daniel Lezcano,
	Alexander Kochetkov

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.

This is try 2. Please discard all previous 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 (11):
  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
  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

 .../bindings/timer/rockchip,rk-timer.txt           |   12 +-
 arch/arm/boot/dts/rk3188.dtsi                      |   16 ++
 arch/arm/boot/dts/rk3228-evb.dts                   |    4 +
 arch/arm/boot/dts/rk3229-evb.dts                   |    4 +
 drivers/clocksource/rockchip_timer.c               |  202 +++++++++++++++-----
 5 files changed, 184 insertions(+), 54 deletions(-)

-- 
1.7.9.5

^ permalink raw reply	[flat|nested] 54+ messages in thread

end of thread, other threads:[~2017-01-26 13:20 UTC | newest]

Thread overview: 54+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-11-28 14:31 [PATCHv2 00/11] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 01/11] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 02/11] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 03/11] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 04/11] ARM: dts: rockchip: add timer entries to rk3188 dtsi Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 05/11] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 06/11] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 07/11] clocksource/drivers/rockchip_timer: drop unused rk_base() and rk_ctrl() Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 08/11] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 09/11] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 10/11] clocksource/drivers/rockchip_timer: implement reading 64bit value from timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 11/11] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 00/13] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 01/13] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 02/13] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 03/13] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 04/13] ARM: dts: rockchip: add timer entries to rk3188 dtsi Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 05/13] ARM: dts: rockchip: disable arm-global-timer for rk3188 Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 06/13] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 07/13] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 08/13] clocksource/drivers/rockchip_timer: drop unused rk_base() and rk_ctrl() Alexander Kochetkov
2016-11-29 15:03     ` Heiko Stübner
2016-11-29 13:45   ` [PATCH v3 09/13] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 10/13] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 11/13] clocksource/drivers/rockchip_timer: implement reading 64bit value from timer Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 12/13] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov
2016-11-29 13:45   ` [PATCH v3 13/13] clocksource/drivers/rockchip_timer: Prevent ftrace recursion Alexander Kochetkov
2016-11-29 15:01     ` Heiko Stübner
2016-11-29 15:36       ` Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 1/9] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
2016-12-05 22:22     ` Rob Herring
2016-11-29 16:14   ` [PATCH v4 2/9] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov
2017-01-23 15:40     ` Daniel Lezcano
2017-01-23 16:12       ` Heiko Stübner
2017-01-23 16:13       ` Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 3/9] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 4/9] ARM: dts: rockchip: add timer entries to rk3188 SoC Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 5/9] ARM: dts: rockchip: disable arm-global-timer for rk3188 Alexander Kochetkov
2017-01-23 16:14     ` Heiko Stübner
2016-11-29 16:14   ` [PATCH v4 6/9] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov
2017-01-23 16:26     ` Daniel Lezcano
2017-01-23 16:45       ` Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 7/9] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 8/9] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov
2016-11-29 16:14   ` [PATCH v4 9/9] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov
2017-01-23 17:09     ` Heiko Stübner
2016-12-21 14:21   ` [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2017-01-23 14:47     ` Daniel Lezcano
2017-01-23 17:12       ` Heiko Stübner
2017-01-23 17:24         ` Alexander Kochetkov
2017-01-23 17:57           ` Daniel Lezcano
2017-01-26 11:08             ` Alexander Kochetkov
2017-01-26 13:19               ` Daniel Lezcano

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