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

[Ray Jui <ray.jui@broadcom.com>]

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@broadcom.com>
>> Reviewed-by: Jon Mason <jon.mason@broadcom.com>
>> Reviewed-by: Scott Branden <scott.branden@broadcom.com>
>> ---
>>  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