Re: [PATCH 3/4] dt-bindings: Update iProc GPIO bindings

[Ray Jui]

On 4/14/2016 7:38 AM, Rob Herring wrote:
> On Tue, Apr 12, 2016 at 05:15:22PM -0700, Ray Jui wrote:
> > Update the iProc GPIO binding document to introduce a new compatible
> > string "brcm,iproc-gpio-only", that allows the generic pinconf function
> > to be disabled completely
> >
> > Signed-off-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
> > Reviewed-by: Jon Mason <jon.mason@xxxxxxxxxxxx>
> > Reviewed-by: Scott Branden <scott.branden@xxxxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/pinctrl/brcm,iproc-gpio.txt | 7 +++++--
> >  1 file changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,iproc-gpio.txt b/Documentation/devicetree/bindings/pinctrl/brcm,iproc-gpio.txt
> > index ddaa1b0..75a4370 100644
> > --- a/Documentation/devicetree/bindings/pinctrl/brcm,iproc-gpio.txt
> > +++ b/Documentation/devicetree/bindings/pinctrl/brcm,iproc-gpio.txt
> > @@ -3,8 +3,11 @@ Broadcom iProc GPIO/PINCONF Controller
> >  Required properties:
> >
> >  - compatible:
> > -    Must be "brcm,cygnus-ccm-gpio", "brcm,cygnus-asiu-gpio",
> > -    "brcm,cygnus-crmu-gpio" or "brcm,iproc-gpio"
> > +    For Cygnus, it must be brcm,cygnus-ccm-gpio", "brcm,cygnus-asiu-gpio", or
> > +"brcm,cygnus-crmu-gpio"
> > +    For non-Cygnus iProc SoCs, it must be either "brcm,iproc-gpio-only" (if
> > +only GPIO is supported) or "brcm,iproc-gpio" (if both generic pinconf and GPIO
> > +are supported)
>
> No. That's not how compatible strings work. Use SoC specific compatible
> strings if you need to distinguish this.
>
> Rob

Okay. Let me reply this to the email from Linus so we can consolidate 
all related discussions.

Thanks,

Ray