Re: [PATCH v2 1/5] ARM: dts: Cygnus: Fixed iProc PCIe controller properties

[Florian Fainelli <f.fainelli@gmail.com>]

On 12/7/21 12:08 PM, Rob Herring wrote:
> On Tue, Dec 7, 2021 at 11:44 AM Florian Fainelli <f.fainelli@gmail.com> wrote:
>>
>> On 12/7/21 5:49 AM, Rob Herring wrote:
>>> On Mon, Dec 6, 2021 at 12:52 PM Florian Fainelli <f.fainelli@gmail.com> wrote:
>>>>
>>>> Rename the msi controller unit name to 'msi' to avoid collisions
>>>> with the 'msi-controller' boolean property and add the missing
>>>> 'interrupt-controller' property which is necessary. We also need to
>>>> re-arrange the 'ranges' property to show the two cells as being separate
>>>> instead of combined since the DT checker is not able to differentiate
>>>> otherwise.
>>>>
>>>> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
>>>> ---
>>>>  arch/arm/boot/dts/bcm-cygnus.dtsi | 14 ++++++++------
>>>>  1 file changed, 8 insertions(+), 6 deletions(-)
>>>>
>>>> diff --git a/arch/arm/boot/dts/bcm-cygnus.dtsi b/arch/arm/boot/dts/bcm-cygnus.dtsi
>>>> index 8ecb7861ce10..ea19d1b56400 100644
>>>> --- a/arch/arm/boot/dts/bcm-cygnus.dtsi
>>>> +++ b/arch/arm/boot/dts/bcm-cygnus.dtsi
>>>> @@ -263,6 +263,7 @@ pcie0: pcie@18012000 {
>>>>                         compatible = "brcm,iproc-pcie";
>>>>                         reg = <0x18012000 0x1000>;
>>>>
>>>> +                       interrupt-controller;
>>>
>>> How is this a fix? This doesn't even work before v5.16 with commit
>>> 041284181226 ("of/irq: Allow matching of an interrupt-map local to an
>>> interrupt controller").
>>
>> What is the path forward? I suppose I could make the
>> interrupt-controller property not required for this controller but then
>> the default interrupt-controller schema is not terribly happy about
>> seeing an interrupt-map/interrupt-map-mask properties without
>> interrupt-controller.
> 
> There's certainly no requirement for having 'interrupt-controller'.
> What error are you getting?

This was the error I was getting because I had made the
'interrupt-controller' a required property in the brcm,iproc-pcie.yaml
binding, silly me:

/home/fainelli/dev/linux/arch/arm/boot/dts/bcm958300k.dt.yaml:
pcie@18012000: 'interrupt-controller' is a required property
        From schema:
/home/fainelli/dev/linux/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.yaml

after taking it out from the required property there are no more
warnings, I will spin a v3 with the changes, thanks!
-- 
Florian