From: Noam Camus <noamca@xxxxxxxxxxxx> Change log --- V2 --> V3 Apply Rob Herring comment about backword compatibility V1 --> V2 Apply Daniel Lezcano comments: CLOCKSOURCE_OF_DECLARE return value update hotplug callbacks usage squash of 2 first commits. In this version I created new commit to serve as preperation for adding clockevents. This way the last patch is more readable with clockevent content. --- In first version of this driver we supported clocksource for the NPS400. The support for clockevent was taken from Synopsys ARC timer driver. This was good for working with our simulator of NPS400. However in NPS400 ASIC the timers behave differently than simulation. The timers in ASIC are shared between all threads whithin a core and hence need different driver to support this behaviour. The idea of this design is that we got 16 HW threads per core each represented at bimask in a shared register in this core. So when thread wants that next clockevent expiration will produce timer interrupt to itself the correspondance bit in this register should be set. So theoretically if all 16 bits are set then all HW threads will get timer interrupt on next expiration of timer 0. Note that we use Synopsys ARC design naming convention for the timers where: timer0 is used for clockevents timer1 is used for clocksource. Noam Camus (3): soc: Support for NPS HW scheduling clocksource: update "fn" at CLOCKSOURCE_OF_DECLARE() of nps400 timer clocksource: Add clockevent support to NPS400 driver .../bindings/timer/ezchip,nps400-timer.txt | 15 -- .../bindings/timer/ezchip,nps400-timer0.txt | 17 ++ .../bindings/timer/ezchip,nps400-timer1.txt | 15 ++ arch/arc/plat-eznps/include/plat/ctop.h | 2 - drivers/clocksource/timer-nps.c | 255 ++++++++++++++++++-- include/linux/cpuhotplug.h | 1 + include/soc/nps/mtm.h | 59 +++++ 7 files changed, 327 insertions(+), 37 deletions(-) delete mode 100644 Documentation/devicetree/bindings/timer/ezchip,nps400-timer.txt create mode 100644 Documentation/devicetree/bindings/timer/ezchip,nps400-timer0.txt create mode 100644 Documentation/devicetree/bindings/timer/ezchip,nps400-timer1.txt create mode 100644 include/soc/nps/mtm.h -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
