Here's an RFC series for clocksource migration of OMAP timers. This attempt is going to step-by-step attempt to migrate platforms such that everything is kept working smoothly during migration. Currently the series introduces a clocksource driver and migrates AM335x platform to discuss the general idea. The plan is to move dmtimer to clocksource (infact make a copy for now so that platforms not migrated still work). Then we add a per-SoC clocksource registration and select a timer as each of them are initialized by clocksource (suggested in [1]). We also add support for a generic timer init function which is called for every SoC for which support in clocksource driver is available. And, we call a generic OMAP power up function which is introduced in the mach-omap layer in this series. Lastly, we add clock nodes for the system timers, and setup a default-parent so that the parent clocks are setup correctly. Due to this, the series depends on Tero's series [2]. Please note- this effort is for system timer support. This is the first basic step. Converting dmtimer to use any other generic framework is a completely different topic and should not be discussed in this thread. It is something that can be done only _after_ the work done in this series is completed, thanks. [1] https://lkml.org/lkml/2013/11/23/88 [2] http://www.spinics.net/lists/linux-omap/msg103069.html Joel Fernandes (5): ARM: dts: am33xx: Add clock nodes for timer1 and timer2 ARM: dts: am33xx: Set parent clock for timer through DT ARM: OMAP2+: timer: Add clocksource initialization and powerup support clocksource: omap-timer: Introduce clocksource driver for OMAP SoCs ARM: AM33xx: Move to using omap_generic_timer_init for init_time arch/arm/boot/dts/am33xx.dtsi | 4 + arch/arm/mach-omap2/board-generic.c | 2 +- arch/arm/mach-omap2/common.h | 1 + arch/arm/mach-omap2/timer.c | 28 + drivers/clocksource/Makefile | 1 + drivers/clocksource/omap-timer.c | 1157 +++++++++++++++++++++++++++++++++++ drivers/clocksource/omap-timer.h | 422 +++++++++++++ 7 files changed, 1614 insertions(+), 1 deletion(-) create mode 100644 drivers/clocksource/omap-timer.c create mode 100644 drivers/clocksource/omap-timer.h -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
