clocksource/drivers/timer-ti-dm: Do one override clock parent in prepare()

omap_dm_timer_prepare() is setting up the parent 32KHz clock. This
prepare() gets called by request_timer in the client's driver. Because of
this, the timer clock parent that is set with assigned-clock-parent is being
overwritten. So drop this default setting of parent in prepare().

Signed-off-by: Lokesh Vutla <[email protected]>
Reviewed-by: Suman Anna <[email protected]>
Acked-by: Tony Lindgren <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: lokeshvutla

drivers/clocksource/timer-ti-dm.c

@@ -258,9 +258,7 @@ static int omap_dm_timer_prepare(struct omap_dm_timer *timer)
 	__omap_dm_timer_enable_posted(timer);
 	omap_dm_timer_disable(timer);
 
-	rc = omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ);
-
-	return rc;
+	return 0;
 }
 
 static inline u32 omap_dm_timer_reserved_systimer(int id)