Merge tag 'mxs-soc-3.9' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc

From Shawn Guo:
mxs soc changes for 3.9

 - A couple of optimization on timer
 - Some updates on mxs_defconfig

* tag 'mxs-soc-3.9' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT
  ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles
  ARM: mxs: use apbx bus clock to drive the timers on timrotv2
  ARM: mxs: Update mxs_defconfig

1 files changed, 7 insertions, 5 deletions

diff --git a/arch/arm/mach-mxs/timer.c b/arch/arm/mach-mxs/timer.c
index 27451b1ba3f1..421020498a1b 100644
--- a/arch/arm/mach-mxs/timer.c
+++ b/arch/arm/mach-mxs/timer.c
@@ -72,8 +72,9 @@
 #define BM_TIMROT_TIMCTRLn_IRQ_EN       (1 << 14)
 #define BM_TIMROT_TIMCTRLn_IRQ          (1 << 15)
 #define BP_TIMROT_TIMCTRLn_SELECT       0
-#define BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL 0x8
-#define BV_TIMROTv2_TIMCTRLn_SELECT__32KHZ_XTAL 0xb
+#define BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL         0x8
+#define BV_TIMROTv2_TIMCTRLn_SELECT__32KHZ_XTAL         0xb
+#define BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS        0xf
 
 static struct clock_event_device mxs_clockevent_device;
 static enum clock_event_mode mxs_clockevent_mode = CLOCK_EVT_MODE_UNUSED;
@@ -206,7 +207,8 @@ static int __init mxs_clockevent_init(struct clk *timer_clk)
                 mxs_clockevent_device.set_next_event = timrotv1_set_next_event;
         mxs_clockevent_device.cpumask = cpumask_of(0);
         clockevents_config_and_register(&mxs_clockevent_device,
-                                        clk_get_rate(timer_clk), 0xf,
+                                        clk_get_rate(timer_clk),
+                                        timrot_is_v1() ? 0xf : 0x2,
                                         timrot_is_v1() ? 0xfffe : 0xfffffffe);
 
         return 0;
@@ -274,7 +276,7 @@ void __init mxs_timer_init(void)
         /* one for clock_event */
         __raw_writel((timrot_is_v1() ?
                         BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL :
-                        BV_TIMROTv2_TIMCTRLn_SELECT__32KHZ_XTAL) |
+                        BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS) |
                         BM_TIMROT_TIMCTRLn_UPDATE |
                         BM_TIMROT_TIMCTRLn_IRQ_EN,
                         mxs_timrot_base + HW_TIMROT_TIMCTRLn(0));
@@ -282,7 +284,7 @@ void __init mxs_timer_init(void)
         /* another for clocksource */
         __raw_writel((timrot_is_v1() ?
                         BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL :
-                        BV_TIMROTv2_TIMCTRLn_SELECT__32KHZ_XTAL) |
+                        BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS) |
                         BM_TIMROT_TIMCTRLn_RELOAD,
                         mxs_timrot_base + HW_TIMROT_TIMCTRLn(1));