Add the ARM Global Timer as clocksource/scheduler clock option and use it as default scheduler clock. This leaves the PIT timer for other users e.g. the secondary Cortex-M4 core. Also, the Global Timer has double the precission (running at pheripheral clock compared to IPG clock) and a 64-bit incrementing counter register. We still keep the PIT timer as an secondary option in case the ARM Global Timer is not available.
Signed-off-by: Stefan Agner <[email protected]> --- arch/arm/mach-imx/Kconfig | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 11b2957..9482f58 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -633,12 +633,29 @@ config SOC_VF610 bool "Vybrid Family VF610 support" select ARM_GIC select PINCTRL_VF610 - select VF_PIT_TIMER select PL310_ERRATA_769419 if CACHE_L2X0 help This enable support for Freescale Vybrid VF610 processor. +choice + prompt "Clocksource for scheduler clock" + depends on SOC_VF610 + default ARM_GLOBAL_TIMER + + config ARM_GLOBAL_TIMER + bool "Use ARM Global Timer" + select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK + help + Use the ARM Global Timer as clocksource + + config VF_PIT_TIMER + bool "Use PIT timer" + help + Use SoC Periodic Interrupt Timer (PIT) as clocksource + +endchoice + endif source "arch/arm/mach-imx/devices/Kconfig" -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
