Re: [PATCH-v5 RESEND 2/5] i2c: pxa: enable/disable i2c module across msg xfer

[Vaibhav Hiremath]

On Saturday 12 September 2015 12:23 AM, Wolfram Sang wrote:
> On Mon, Aug 24, 2015 at 11:29:35AM +0530, Vaibhav Hiremath wrote:
> > From: Yi Zhang <yizhang@xxxxxxxxxxx>
> >
> > Enable i2c module/unit before transmission and disable when it
> > finishes.
> >
> > why?
> > It's because the i2c bus may be disturbed if the slave device,
> > typically a touch, powers on.
>
> I am not convinced, "may disturb" is too weak for me. It would need a
> way more detailed description of the problem which makes clear that
> this mechanism is the only way to go forward.

Hmm, Ok.
Not sure what else I can bring up here.

> Can't you use Runtime PM for that?

I haven't tried it though, I can give a try and check.

Thanks,
Vaibhav

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