>>CONFIG_HIGH_RES_TIMERS=y
>>CONFIG_ATMEL_TCB_CLKSRC=y
>>Hangs (or resets if the WD is enabled)
>>
>>CONFIG_HIGH_RES_TIMERS=y
>>CONFIG_ATMEL_TCB_CLKSRC=n
>>Boots ok.
>>
>>Now the kernel boots with the CONFIG_HIGH_RES_TIMERS enabled, but hangs when I enable the TCB clock source.
>>Michael, if you have spare time, maybe you could also test these configs to see if you have similar behavior.
>Okay. So in the working variant with TCB=n, do you have high res timers available?
>Sebastian
When the TCB_CLKSRC=n, the system uses periodic interval timer (pit), and it seems that the
high res timers are not available even though CONFIG_HIGH_RES_TIMERS=y.
/proc/timer_list for the working variant below.
BR,
Sami Pietikäinen
Timer List Version: v0.7
HRTIMER_MAX_CLOCK_BASES: 4
now at 195174767111 nsecs
cpu: 0
clock 0:
.base: c0301990
.index: 0
.resolution: 10000000 nsecs
.get_time: ktime_get
.offset: 0 nsecs
active timers:
#0: <c031e148>, sched_rt_period_timer, S:01
# expires at 196000000000-196000000000 nsecs [in 825232889 to 825232889 nsecs]
#1: <df869aa8>, hrtimer_wakeup, S:01
# expires at 199543365657-199548365650 nsecs [in 4368598546 to 4373598539 nsecs]
clock 1:
.base: c03019d0
.index: 1
.resolution: 10000000 nsecs
.get_time: ktime_get_real
.offset: 0 nsecs
active timers:
clock 2:
.base: c0301a10
.index: 2
.resolution: 10000000 nsecs
.get_time: ktime_get_boottime
.offset: 0 nsecs
active timers:
clock 3:
.base: c0301a50
.index: 3
.resolution: 10000000 nsecs
.get_time: ktime_get_clocktai
.offset: 0 nsecs
active timers:
.expires_next : 9223372036854775807 nsecs
.hres_active : 0
.nr_events : 0
.nr_retries : 0
.nr_hangs : 0
.max_hang_time : 0 nsecs
.nohz_mode : 0
.last_tick : 0 nsecs
.tick_stopped : 0
.idle_jiffies : 0
.idle_calls : 0
.idle_sleeps : 0
.idle_entrytime : 195170661051 nsecs
.idle_waketime : 0 nsecs
.idle_exittime : 0 nsecs
.idle_sleeptime : 188933606397 nsecs
.iowait_sleeptime: 0 nsecs
.last_jiffies : 0
.next_jiffies : 0
.idle_expires : 0 nsecs
jiffies: 4294956814
Tick Device: mode: 0
Per CPU device: 0
Clock Event Device: pit
max_delta_ns: 0
min_delta_ns: 0
mult: 35433480
shift: 32
mode: 2
next_event: 9223372036854775807 nsecs
set_next_event: <00000000>
set_mode: pit_clkevt_mode
event_handler: tick_handle_periodic
retries: 0
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