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Subject: Re: [BUG] atomisp_ov2680 not initializing correctly
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
        Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Kristian Beilke <beilke@posteo.de>,
        Sakari Ailus <sakari.ailus@iki.fi>,
        Linux Media Mailing List <linux-media@vger.kernel.org>,
        Alan Cox <alan@linux.intel.com>,
        Hans de Goede <hdegoede@redhat.com>
Date: Thu, 04 Jan 2018 19:47:50 +0200
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On Tue, 2018-01-02 at 18:31 +0000, Alan Cox wrote:
> > Patch 0003-atomisp_gmin_platform-tweak-to-drive-axp288.patch gives a
> > little confusion.
> > The PMIC driver should work via ACPI OpRegion macro (and should be
> > enabled in kernel configuration). That's how it supposed to work.
> > The patch seems redundant.
> 
> I am fairly sure it is meant to work that way - but it doesn't. At
> least
> not at the moment.

Hmm... At least I see writes to PMIC on my side through OpRegion driver.

(Assuming my ugly hack patches applied)

> > > I see your point, Still it feels, as if this could go somewhere.  
> > 
> > I hope so, though I didn't try CherryTrail and according to Alan
> > that
> > is what he had tried on.
> 
> It's what we are currently trying on. I can fire up the ISP and
> actually
> get interrupts from it, but not much more at this point.

Seems you are ahead of everyone who is trying AtomISP till now.

-- 
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy