clocksource: SuperH TMU Timer driver

This patch adds a TMU driver for the SuperH architecture.

The TMU driver is a platform driver with early platform
support to allow using a TMU channel as clockevent or
clocksource during system bootup or later.

Clocksource or clockevent can be selected.
Both periodic and oneshot clockevents are supported.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index bda3dc1b0c26..1f74737c4f20 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -116,6 +116,9 @@ config SYS_SUPPORTS_CMT
 config SYS_SUPPORTS_MTU2
         bool
 
+config SYS_SUPPORTS_TMU
+        bool
+
 config STACKTRACE_SUPPORT
         def_bool y
 
@@ -470,6 +473,15 @@ config SH_TMU
         help
           This enables the use of the TMU as the system timer.
 
+config SH_TIMER_TMU
+        bool "TMU timer driver"
+        depends on !SH_TMU && SYS_SUPPORTS_TMU
+        default y
+        select GENERIC_TIME
+        select GENERIC_CLOCKEVENTS
+        help
+          This enables the build of the TMU timer driver.
+
 config SH_TIMER_CMT
         bool "CMT timer driver"
         depends on SYS_SUPPORTS_CMT