OMAP3: PM: DSS PM_WKEN to refill DMA

Currently, DSS does not wakeup when there is a DMA request.  DSS wake
up event must be enabled so that the DMA request to refill the FIFO
will wake up the CORE domain.

Signed-off-by: Subramani Venkatesh <subramani.venkatesh@windriver.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 31762ca9f117..910a7acf542d 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -890,6 +890,10 @@ static void __init prcm_setup_regs(void)
         prm_write_mod_reg(OMAP3430_IO_EN | OMAP3430_WKUP_EN,
                           OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET);
 
+        /* Enable PM_WKEN to support DSS LPR */
+        prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS,
+                                OMAP3430_DSS_MOD, PM_WKEN);
+
         /* Enable wakeups in PER */
         prm_write_mod_reg(OMAP3430_EN_GPIO2 | OMAP3430_EN_GPIO3 |
                           OMAP3430_EN_GPIO4 | OMAP3430_EN_GPIO5 |