Re: IIO timestamp get skewed when suspending (st_lsm6dsx)

[Sean Nyekjaer]

Hi Thomas,

I have a question regarding CLOCK_REALTIME and CLOCK_BOOTTIME when 
resuming from suspend.

We have run into problems with 
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c + the first patch from 
Lorenzo Bianconi in this thread.
The accelerometer have an internal FIFO that includes a timestamp. When 
we resume from suspend,
the driver resets the fifo ts counter and sets an internal reference to 
that time.
But to me it looks like both CLOCK_REALTIME and CLOCK_BOOTIME aren't 
ready when st_lsm6dsx_resume() is called.

If this is a limitation, can you point to other drivers that have been 
able to workaround it?
Or can we wait for a flag or similar?

Best regards,
Sean Nyekjaer