clocksource: SuperH MTU2 Timer driver
This patch adds a MTU2 driver for the SuperH architecture.
The MTU2 driver is a platform driver with early platform
support to allow using a MTU2 channel as only clockevent
during system bootup.
Clocksource on sh2a is currently unsupported due to code
generation issues with 64-bit math, so at this point only
periodic clockevent support is in place.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 6f91478..6d0dd37 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -113,6 +113,9 @@
config SYS_SUPPORTS_CMT
bool
+config SYS_SUPPORTS_MTU2
+ bool
+
config STACKTRACE_SUPPORT
def_bool y
@@ -478,6 +481,14 @@
help
This enables the use of the MTU2 as the system timer.
+config SH_TIMER_MTU2
+ bool "MTU2 timer driver"
+ depends on SYS_SUPPORTS_MTU2 && !SH_MTU2
+ default y
+ select GENERIC_CLOCKEVENTS
+ help
+ This enables build of the MTU2 timer driver.
+
config SH_TIMER_IRQ
int
default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \