RE: [PATCH] ASoC: fsl_sai: Fix one bug for hardware limitation.

From: Li.Xiubo@xxxxxxxxxxxxx
Date: Mon Dec 30 2013 - 22:29:13 EST

Hi Mark,

> Subject: Re: [PATCH] ASoC: fsl_sai: Fix one bug for hardware limitation.
> On Thu, Dec 26, 2013 at 10:57:22AM +0800, Xiubo Li wrote:
> > This is maybe one bug or a limitation of the hardware that the {T,R}CR2's
> > Synchronous Mode bits must be set as late as possible, or the SAI device
> > maybe hanged up, and there has not any explaination about this limitation
> > in the SAI Data Sheet.
> If they really should be set as late as possible then I'd expect them to
> be being set in the trigger function, that's what gets called as the
> audio actually starts streaming. This is moving it to the startup
> function which is one of the first things that happens during audio
> stream setup so presumably makes things worse.

Yes, it is.

If everything is OK, I will send another new patch later.


Best Regards,
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at