ARM: OMAP5 / DRA7: Enable CPU RET on suspend
On OMAP5 / DRA7, prevent a CPU powerdomain OFF and resulting MPU OSWR
and instead attempt a CPU RET and side effect, MPU RET in suspend.
NOTE: the hardware was originally designed to be capable of achieving
deep power states such as OFF and OSWR, however due to various issues
and risks, deepest valid state was determined to be CSWR - hence we use
the errata framework to handle this case.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: updates]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
index e844e16..f961c46 100644
--- a/arch/arm/mach-omap2/omap-wakeupgen.c
+++ b/arch/arm/mach-omap2/omap-wakeupgen.c
@@ -32,6 +32,7 @@
#include "soc.h"
#include "omap4-sar-layout.h"
#include "common.h"
+#include "pm.h"
#define AM43XX_NR_REG_BANKS 7
#define AM43XX_IRQS 224
@@ -381,7 +382,7 @@
static void __init irq_pm_init(void)
{
/* FIXME: Remove this when MPU OSWR support is added */
- if (!soc_is_omap54xx())
+ if (!IS_PM44XX_ERRATUM(PM_OMAP4_CPU_OSWR_DISABLE))
cpu_pm_register_notifier(&irq_notifier_block);
}
#else