Donny9 commented on pull request #4026: URL: https://github.com/apache/incubator-nuttx/pull/4026#issuecomment-872959486
> > We don't have this hardware, can you describe this deadlock in more
detail, which lock cause the deadlock ?
>
> Though this is spresense specific, it stops in the clock initialization.
>
> ```
> (gdb) where
> #0 arm_switchcontext () at armv7-m/gnu/arm_switchcontext.S:79
> #1 0x0d004be4 in nxsem_wait (sem=sem@entry=0x2d05aab4 <g_freqlockwait>)
at semaphore/sem_wait.c:153
> #2 0x0d004bfe in nxsem_wait_uninterruptible (sem=sem@entry=0x2d05aab4
<g_freqlockwait>) at semaphore/sem_wait.c:222
> #3 0x0d0016cc in cxd56_pm_semtake (id=id@entry=0x2d05aab4
<g_freqlockwait>) at chip/cxd56_powermgr.c:177
> #4 0x0d001712 in cxd56_pm_checkfreqlock () at chip/cxd56_powermgr.c:333
> #5 0x0d0019ee in up_pm_acquire_freqlock (lock=0x2d059624 <g_hv_lock>) at
chip/cxd56_powermgr.c:599
> #6 0x0d0373be in board_clock_initialize () at board/cxd56_clock.c:52
> #7 0x0d036c84 in cxd56_bringup () at board/cxd56_bringup.c:252
> #8 0x00000000 in ?? ()
> ```
Thank you , i will check this issue.
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