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>

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 31762ca9f11786a70c77ef763627a508915f5b8a..910a7acf542d1bd1257cfeff37cbf23403eaf7b5 100644 (file)
--- 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 |