[PATCH v5 0/3] Introduce clocksource driver for Keystone platform

Ivan Khoronzhuk ivan.khoronzhuk at ti.com
Wed Feb 5 08:47:37 EST 2014

Add a broadcast timer64 based clockevent driver for keystone arch.
This driver uses timer in 64-bit general purpose mode as clock event


Based on

	used __iowmb() insted of wmb()

	rebased on latest of linux-keystone.git keystone/master

- clocksource: timer-keystone: introduce clocksource driver for
	changed "u64" type to "unsigned long" for hz_period as more appropriate
	hz_period rounded up by DIV_ROUND_UP(rate, HZ)
	corrected comments

- clocksource: timer-keystone: introduce clocksource driver for
	renamed timer on "timer-keystone"
	in keystone_timer_interrupt() evet pointer is passed via "dev_id"
	used __relaxed variants of writel/readl and added explicit barriers
	added "keystone_timer_disable()" for using in keystone_set_mode()
	keystone_timer_config() is not used for disabling the timer any more
	in case of an unsupported mode the keystone_timer_config() returns -1.
	used request_irq() instead of setup_irq()
	assigned irq for event_device in event_dev->irq
	calculated timer.hz_period for CLOCK_EVT_MODE_PERIODIC at init
	deleted spare call of keystone_timer_config() in keystone_timer_init()

Ivan Khoronzhuk (3):
  clocksource: timer-keystone: introduce clocksource driver for Keystone
  clocksource: keystone: add bindings for keystone timer
  arm: dts: keystone: add keystone timer entry

 .../bindings/timer/ti,keystone-timer.txt           |  29 +++
 arch/arm/boot/dts/keystone-clocks.dtsi             |  10 +
 arch/arm/boot/dts/keystone.dtsi                    |   7 +
 drivers/clocksource/Makefile                       |   1 +
 drivers/clocksource/timer-keystone.c               | 233 +++++++++++++++++++++
 5 files changed, 280 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/ti,keystone-timer.txt
 create mode 100644 drivers/clocksource/timer-keystone.c


More information about the linux-arm-kernel mailing list