| Message ID | 1411575610-20895-4-git-send-email-stefan@agner.ch (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Sep 24, 2014 at 06:20:10PM +0200, Stefan Agner wrote: > 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 <stefan@agner.ch> Applied, thanks.
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"
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 <stefan@agner.ch> --- arch/arm/mach-imx/Kconfig | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)