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Diffstat (limited to 'drivers/clocksource/Kconfig')
| -rw-r--r-- | drivers/clocksource/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 39aa21d01e05..9fa28237715a 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -358,6 +358,20 @@ config ARM_GLOBAL_TIMER help This option enables support for the ARM global timer unit. +config ARM_GT_INITIAL_PRESCALER_VAL + int "ARM global timer initial prescaler value" + default 2 if ARCH_ZYNQ + default 1 + depends on ARM_GLOBAL_TIMER + help + When the ARM global timer initializes, its current rate is declared + to the kernel and maintained forever. Should it's parent clock + change, the driver tries to fix the timer's internal prescaler. + On some machs (i.e. Zynq) the initial prescaler value thus poses + bounds about how much the parent clock is allowed to decrease or + increase wrt the initial clock value. + This affects CPU_FREQ max delta from the initial frequency. + config ARM_TIMER_SP804 bool "Support for Dual Timer SP804 module" if COMPILE_TEST depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP |