Hi

> > +     /*
> > +      * Add fifo reset here, because the regcache_sync will
> > +      * write one more data to ETDR.
> > +      * Which will cause channel shift.
> 
> Sounds like a bug to me...should fix it first by marking the data registers as
> volatile.
> 

The ETDR is a writable register, it is not volatile. Even we change it to
Volatile, I don't think we can't avoid this issue. for the regcache_sync
Just to write this register, it is correct behavior.

Best regards
Wang shengjiu

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