Re: [5/5] i2c: davinci: use ICPFUNC to toggle I2C as gpio for bus recovery

[Grygorii Strashko]

Hi Uwe,
On 11/24/2014 09:45 PM, Uwe Kleine-König wrote:
> On Mon, Nov 24, 2014 at 03:15:58PM +0200, Grygorii Strashko wrote:
> > On 11/23/2014 07:04 PM, Uwe Kleine-König wrote:
> > > On Thu, Nov 20, 2014 at 12:03:08PM +0200, Grygorii Strashko wrote:
> > > > @@ -664,6 +759,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
> > > >    		if (!of_property_read_u32(pdev->dev.of_node, "clock-frequency",
> > > >    			&prop))
> > > >    			dev->pdata->bus_freq = prop / 1000;
> > > > +		dev->pdata->has_pfunc = true;
> > > I don't understand this. Why does this ICPFUNC recovery work if the bus
> > > is probed by oftree, but doesn't if not?
> >
> > I've mentioned this in commit message:
> >   Allow platforms to indicate the presence of the ICPFUNC registers with a has_pfunc
> >   platform data flag and enable this mode for platforms which supports DT (da850 and
> >   Keystone 2 are two SoCs which support DT now and they also support ICPFUNC registers).
> Ah, so you assume that in the dt case the pfunc functionality is
> available. I didn't understand if it's bad or not if this assumption is
> wrong, but I suggest to only use the pfunc stuff if the device node has
> a given property (e.g. ti,has_pfunc).

Agree. I'll add it.

regards,
-grygorii
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