linux-kernel - Re: [PATCH 2/2] PCI: iproc: Add optional brcm,pci-hotplug

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Message-ID: <CAMSpPPejuTn210aSYjApbz_Jx_tO7V1Fd6nSt96axm-9MFruhA@mail.gmail.com>
Date:   Wed, 9 Aug 2017 11:13:33 +0530
From:   Oza Oza <oza.oza@...adcom.com>
To:     Ray Jui <ray.jui@...adcom.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>,
        "bcm-kernel-feedback-list@...adcom.com" 
        <bcm-kernel-feedback-list@...adcom.com>,
        Andy Gospodarek <gospo@...adcom.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Oza Pawandeep <oza.pawandeep@...il.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 2/2] PCI: iproc: Add optional brcm,pci-hotplug

On Wed, Aug 9, 2017 at 10:57 AM, Ray Jui <ray.jui@...adcom.com> wrote:
>
>
> On 8/8/2017 10:22 PM, Oza Oza wrote:
>>
>> On Tue, Aug 8, 2017 at 7:50 PM, Rob Herring <robh+dt@...nel.org> wrote:
>>>
>>> Please send bindings to DT list.
>>
>> Sure, will do that.
>>
>>> On Mon, Aug 7, 2017 at 11:44 PM, Oza Pawandeep <oza.oza@...adcom.com>
>>> wrote:
>>>>
>>>> Add description for optional device tree property
>>>> 'brcm,pci-hotplug' for PCI hotplug feature.
>>>>
>>>> Signed-off-by: Oza Pawandeep <oza.oza@...adcom.com>
>>>> Reviewed-by: Ray Jui <ray.jui@...adcom.com>
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
>>>> b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
>>>> index b8e48b4..a3bad24 100644
>>>> --- a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
>>>> +++ b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
>>>> @@ -72,6 +72,29 @@ Optional properties:
>>>>   - brcm,pcie-msi-inten: Needs to be present for some older iProc
>>>> platforms that
>>>>   require the interrupt enable registers to be set explicitly to enable
>>>> MSI
>>>>
>>>> +Optional properties:
>>>> +- brcm,pci-hotplug: PCI hotplug feature is supported.
>>>
>>> I think we should make this a common property. We already have
>>> "ibm,slot-pluggable", so I'd propose "slot-pluggable".
>>>
>>> There's also "hotpluggable" for memory nodes defined, so we could
>>> reuse that here.
>>>
>> ok I will rename this to
>> brcm,slot-pluggable
>
>
> How's brcm,slot-pluggable a common property? It's still brcm specific.
> Didn't Rob propose either "slot-pluggable" or "hotpluggable"?
>
> And note it goes to the generic PCI binding instead iProc PCIe specific
> binding.
>

Initially I thought, Rob suggested either "slot-pluggable".
followed by, "hotpluggable" since memory node already has such property.

but not sure in which generic pci binding I should add ?
should it be part of
Documentation/devicetree/bindings/pci/host-generic-pci.txt

Can you please clarify Rob ?

Regards,
Oza.