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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2011-02-22 09:57:47 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-02-23 18:54:55 +0100
commit07787a85c0c664d434b522c8bdf7cdc636a16e75 (patch)
tree086def240a52b985992c2506e66b6586716f0410 /arch
parentARM: 6759/1: smp: Select local timers vs broadcast timer support runtime (diff)
downloadlinux-07787a85c0c664d434b522c8bdf7cdc636a16e75.tar.xz
linux-07787a85c0c664d434b522c8bdf7cdc636a16e75.zip
ARM: 6753/1: omap4: Enable ARM local timers with OMAP4430 es1.0 exception
On OMAP4430 ES1.0 the local timers are gated by security. Enable the CONFIG_LOCAL_TIMERS for omap2plus build and handle the OMAP4430 es1.0 exception case. This patch has dependency on the first patch in this series. ARM: smp: Select local timers vs dummy timer support runtime Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap2/Kconfig1
-rw-r--r--arch/arm/mach-omap2/timer-mpu.c4
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 1a2cf6226a55..ec55fd830f62 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -44,6 +44,7 @@ config ARCH_OMAP4
depends on ARCH_OMAP2PLUS
select CPU_V7
select ARM_GIC
+ select LOCAL_TIMERS if SMP
select PL310_ERRATA_588369
select ARM_ERRATA_720789
select ARCH_HAS_OPP
diff --git a/arch/arm/mach-omap2/timer-mpu.c b/arch/arm/mach-omap2/timer-mpu.c
index 09c73dcfc2ac..31c0ac4cd66a 100644
--- a/arch/arm/mach-omap2/timer-mpu.c
+++ b/arch/arm/mach-omap2/timer-mpu.c
@@ -28,6 +28,10 @@
*/
int __cpuinit local_timer_setup(struct clock_event_device *evt)
{
+ /* Local timers are not supprted on OMAP4430 ES1.0 */
+ if (omap_rev() == OMAP4430_REV_ES1_0)
+ return -ENXIO;
+
evt->irq = OMAP44XX_IRQ_LOCALTIMER;
twd_timer_setup(evt);
return 0;