linux-kernel - Re: [PATCH 1/3] dt-bindings: pci: ti,j721e: Fix "ti,syscon-pcie-ctrl" to take argument

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Date:   Mon, 30 Nov 2020 09:12:49 -0700
From:   Rob Herring <robh@...nel.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Tero Kristo <t-kristo@...com>, Nishanth Menon <nm@...com>,
        Tom Joseph <tjoseph@...ence.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-omap <linux-omap@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree@...r.kernel.org, PCI <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] dt-bindings: pci: ti,j721e: Fix "ti,syscon-pcie-ctrl"
 to take argument

On Thu, Nov 26, 2020 at 5:53 AM Kishon Vijay Abraham I <kishon@...com> wrote:
>
> Hi Rob,
>
> On 20/11/20 10:39 am, Kishon Vijay Abraham I wrote:
> > Hi Rob,
> >
> > On 19/11/20 2:41 am, Rob Herring wrote:
> >> On Mon, Nov 16, 2020 at 11:01:39PM +0530, Kishon Vijay Abraham I wrote:
> >>> Fix binding documentation of "ti,syscon-pcie-ctrl" to take phandle with
> >>> argument. The argument is the register offset within "syscon" used to
> >>> configure PCIe controller.
> >>>
> >>> Link: Link: http://lore.kernel.org/r/CAL_JsqKiUcO76bo1GoepWM1TusJWoty_BRy2hFSgtEVMqtrvvQ@mail.gmail.com
> >>
> >> Link: Link: ?
> >>
> >> AIUI, 'Link' is supposed to be a link to this patch. I guess more than 1
> >> Link would be okay though.
> >
> > Two Links was a typo, will fix it in the next revision. Nishanth as well
> > was asking about using "Link:" tag for a mailing list discussion.
> >
> > I started using it after Lorenzo had asked me to use Link tag for
> > mailing list discussion here sometime back.
> >
> > https://patchwork.kernel.org/project/linux-pci/patch/20171219083627.7904-1-kishon@ti.com/#21350261
> >
> >>
> >>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> >>> ---
> >>>  .../devicetree/bindings/pci/ti,j721e-pci-ep.yaml     | 12 ++++++++----
> >>>  .../devicetree/bindings/pci/ti,j721e-pci-host.yaml   | 12 ++++++++----
> >>>  2 files changed, 16 insertions(+), 8 deletions(-)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/pci/ti,j721e-pci-ep.yaml b/Documentation/devicetree/bindings/pci/ti,j721e-pci-ep.yaml
> >>> index 3ae3e1a2d4b0..e9685c0bdc3e 100644
> >>> --- a/Documentation/devicetree/bindings/pci/ti,j721e-pci-ep.yaml
> >>> +++ b/Documentation/devicetree/bindings/pci/ti,j721e-pci-ep.yaml
> >>> @@ -29,9 +29,13 @@ properties:
> >>>        - const: mem
> >>>
> >>>    ti,syscon-pcie-ctrl:
> >>> -    description: Phandle to the SYSCON entry required for configuring PCIe mode
> >>> -                 and link speed.
> >>> -    $ref: /schemas/types.yaml#/definitions/phandle
> >>> +    allOf:
> >>
> >> You no longer need allOf here.
> >
> > hmm, don't we need it for specifying phandle with fixed cells? FWIW, I
> > was referring
> >
> > https://github.com/devicetree-org/dt-schema/blob/master/test/schemas/good-example.yaml#L187
>
> Can you clarify this please?

We are now using json-schema v2019.09 syntax which doesn't ignore
keywords in addition to a $ref as draft7 and earlier did. The old way
with 'allOf' still works though. I just haven't updated the above test
cases.

Rob