From: santosh.shilimkar@ti.com (Santosh Shilimkar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] omap4: Enable ARM local timers with OMAP4430 es1.0
Date: Thu, 27 Jan 2011 17:10:34 +0530 [thread overview]
Message-ID: <mailman.149.1298052701.1530.linux-arm-kernel@lists.infradead.org> (raw)
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>
---
arch/arm/mach-omap2/Kconfig | 1 +
arch/arm/mach-omap2/timer-mpu.c | 4 ++++
2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 1a2cf62..f285dd7 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
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 09c73dc..31c0ac4 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;
--
1.6.0.4
--001636832066d46fc4049c9271ba
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reply other threads:[~2011-01-27 11:40 UTC|newest]
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