Re: [PATCH 1/4] Documentation: devicetree: Fix s2mps11 and s5m8767 typos

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Andreas,

On Mon, Jun 23, 2014 at 4:06 PM, Andreas Färber <afaerber@xxxxxxx> wrote:
> I was wondering which character to type, and found two undocumented
> s5m8767_pmic properties downstream (s5m-core,enable-low-jitter and
> s5m-core,device_type = <0x2>), which I then left out.

I don't know much about "s5m-core,device_type", but I doubt it's
needed.  You can see <http://crosreview.com/42202> for details.  I
haven't looked but I'd bet that we just get this from the compatible
string now.

I did do a (very!) quick look and I see that low-jitter was originally
implemented in the local 3.4 kernel at <http://crosreview.com/43624>.
...and the local 3.8 kernel at <http://crosreview.com/66037>.

NOTE: it's pretty important to make sure low-jitter is turned on for
Chromebooks if you actually want full functionality.  At least on
exynos5250-snow (with the max77686 PMIC) you'd get occasional (and
very strange and very hard to debug) TPM errors if you didn't have
low-jitter.  The TPM is part of the security model on Chromebooks and
you might have a hard time accessing the encrypted parts of the disk
without it.


-Doug
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