MXC: Lets handle IRQ by priority, defined with exported API function

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/Kconfig b/arch/arm/plat-mxc/Kconfig
index e14eaad11dd5..b2a7e3fad117 100644
--- a/arch/arm/plat-mxc/Kconfig
+++ b/arch/arm/plat-mxc/Kconfig
@@ -23,4 +23,15 @@ source "arch/arm/mach-mx3/Kconfig"
 
 endmenu
 
+config MXC_IRQ_PRIOR
+        bool "Use IRQ priority"
+        depends on ARCH_MXC
+        help
+          Select this if you want to use prioritized IRQ handling.
+          This feature prevents higher priority ISR to be interrupted
+          by lower priority IRQ even IRQF_DISABLED flag is not set.
+          This may be useful in embedded applications, where are strong
+          requirements for timing.
+          Say N here, unless you have a specialized requirement.
+
 endif