diff options
| author | Stefan Agner <stefan@agner.ch> | 2014-09-24 18:20:10 +0200 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2014-11-23 14:56:18 +0800 |
| commit | 2a61cba71fba5b73b11e0de665869a6ee619af0e (patch) | |
| tree | e37f576747d1b2449e4d0b9049f4d42aa0443bc3 /arch | |
| parent | bc4abc3e5f40edc43e54da41b7acf8222e9cb888 (diff) | |
ARM: vf610: Add ARM Global Timer clocksource option
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>
Acked-by: Bill Pringlemeir <bpringlemeir@nbsps.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-imx/Kconfig | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 11b2957f792b..e26b0fdd72db 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -633,12 +633,31 @@ 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 VF_USE_ARM_GLOBAL_TIMER + + config VF_USE_ARM_GLOBAL_TIMER + bool "Use ARM Global Timer" + select ARM_GLOBAL_TIMER + select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK + help + Use the ARM Global Timer as clocksource + + config VF_USE_PIT_TIMER + bool "Use PIT timer" + select VF_PIT_TIMER + help + Use SoC Periodic Interrupt Timer (PIT) as clocksource + +endchoice + endif source "arch/arm/mach-imx/devices/Kconfig" |