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Subject[PATCH 0/2] add Microchip PIT64B timer
From: Claudiu Beznea <>


This series adds driver for Microchip PIT64B timer.
Timer could be used in continuous or oneshot mode. It has 2x32 bit registers
to emulate a 64 bit timer. The timer's period could be configured via LSB_PR
and MSB_PR registers. The current timer's value could be checked via TLSB and
TMSB registers. When (TMSB << 32) | TLSB value reach the (MSB_PR << 32) | LSB_PR
interrupt is raised. If in contiuous mode the TLSB and TMSB resets and restart

This drivers uses PIT64B capabilities for clocksource and clockevent.
The first requested PIT64B timer is used for clockevent. The second one is used
for clocksource. Individual PIT64B hardware resources were used for clocksource
and clockevent to be able to support high resolution timers with this PIT64B

Thank you,
Claudiu Beznea

Claudiu Beznea (2):
dt-bindings: arm: atmel: add bindings for PIT64B
clocksource/drivers/timer-microchip-pit64b: add Microchip PIT64B

.../devicetree/bindings/arm/atmel-sysregs.txt | 7 +
drivers/clocksource/Kconfig | 6 +
drivers/clocksource/Makefile | 1 +
drivers/clocksource/timer-microchip-pit64b.c | 469 +++++++++++++++++++++
4 files changed, 483 insertions(+)
create mode 100644 drivers/clocksource/timer-microchip-pit64b.c


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