From 2a61cba71fba5b73b11e0de665869a6ee619af0e Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Wed, 24 Sep 2014 18:20:10 +0200 Subject: [PATCH] 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 Acked-by: Bill Pringlemeir Signed-off-by: Shawn Guo --- arch/arm/mach-imx/Kconfig | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) 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" -- 2.39.5