Re: [PATCH v2 1/5] dt-bindings: add bindings for i2c-pca-platform

[Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>]

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On Thu, Jun 22, 2017 at 09:20:59PM +0000, Chris Packham wrote:
> On 22/06/17 20:23, Wolfram Sang wrote:
> > 
> >> + - reset-gpios : gpio specifier for gpio connected to RESET_N pin.
> > 
> > What about the 'active' state that Rob mentioned in his last review?
> > 
> 
> My intention was that by saying it is connected to the RESET_N bin the 
> active state is covered.
> 
> I personally always get a little confused when talking about reset 
> lines. The _N denotes that the line is active low but because it is a 
> reset line writing 1 releases the reset so from a what-the-user-wants 
> perspective it's active high.
> 
> dt-binding-wise what we want here is GPIO_ACTIVE_HIGH, as in the driver 
> writes 1 to release reset so don't do any polarity inversion. I'd be 
> happy do add something to that effect in a v3 but I actually felt saying 
> the gpio is connected to RESET_N was less ambiguous.

Okay. Thanks for the explanation. I am fine with it but I'll leave the
final decision to Rob.


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