omap2/3: dmtimer: Enable autoidle

This saves some power. OMAP4 version should check for GPT module ID, as
autoidle is only supported on a subset of these.

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 1d706cf..ee9f6eb 100644 (file)
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -342,6 +342,10 @@ static void omap_dm_timer_reset(struct omap_dm_timer *timer)
        l |= 0x02 << 3;  /* Set to smart-idle mode */
        l |= 0x2 << 8;   /* Set clock activity to perserve f-clock on idle */
 
+       /* Enable autoidle on OMAP2 / OMAP3 */
+       if (cpu_is_omap24xx() || cpu_is_omap34xx())
+               l |= 0x1 << 0;
+
        /*
         * Enable wake-up on OMAP2 CPUs.
         */