linux-kernel - Re: [PATCH v3 02/13] dt-bindings: usb: Add NVIDIA Tegra234 XUSB host controller binding

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Date:   Fri, 18 Nov 2022 15:20:35 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Jon Hunter <jonathanh@...dia.com>
Cc:     Rob Herring <robh@...nel.org>, Wayne Chang <waynec@...dia.com>,
        linux-kernel@...r.kernel.org, ajayg@...dia.com,
        singhanc@...dia.com, devicetree@...r.kernel.org,
        treding@...dia.com, linux-tegra@...r.kernel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-i2c@...r.kernel.org,
        linux-phy@...ts.infradead.org, linux-usb@...r.kernel.org,
        robh+dt@...nel.org, jckuo@...dia.com,
        heikki.krogerus@...ux.intel.com, gregkh@...uxfoundation.org,
        vkoul@...nel.org, balbi@...nel.org, p.zabel@...gutronix.de,
        mathias.nyman@...el.com
Subject: Re: [PATCH v3 02/13] dt-bindings: usb: Add NVIDIA Tegra234 XUSB host
 controller binding

On Fri, Nov 18, 2022 at 11:47:48AM +0000, Jon Hunter wrote:
> Hi Rob,
> 
> On 14/11/2022 19:16, Rob Herring wrote:
> > 
> > On Mon, 14 Nov 2022 20:40:42 +0800, Wayne Chang wrote:
> > > Add device-tree binding documentation for the XUSB host controller present
> > > on Tegra234 SoC. This controller supports the USB 3.1 specification.
> > > 
> > > Signed-off-by: Wayne Chang <waynec@...dia.com>
> > > ---
> > > depends on the following change
> > > https://lore.kernel.org/all/20221003125141.123759-1-jonathanh@nvidia.com/
> > > V2 -> V3:nothing has changed but added the dependency here
> > > V1 -> V2:new change for adding nvidia,tegra234-xusb.yaml
> > >   .../bindings/usb/nvidia,tegra234-xusb.yaml    | 159 ++++++++++++++++++
> > >   1 file changed, 159 insertions(+)
> > >   create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml
> > > 
> > 
> > My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> > on your patch (DT_CHECKER_FLAGS is new in v5.13):
> > 
> > yamllint warnings/errors:
> > 
> > dtschema/dtc warnings/errors:
> > Error: Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.example.dts:36.27-28 syntax error
> > FATAL ERROR: Unable to parse input tree
> > make[1]: *** [scripts/Makefile.lib:406: Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.example.dtb] Error 1
> > make[1]: *** Waiting for unfinished jobs....
> > make: *** [Makefile:1492: dt_binding_check] Error 2
> > 
> > doc reference errors (make refcheckdocs):
> > 
> > See https://patchwork.ozlabs.org/patch/
> > 
> > This check can fail if there are any dependencies. The base for a patch
> > series is generally the most recent rc1.
> > 
> > If you already ran 'make dt_binding_check' and didn't see the above
> > error(s), then make sure 'yamllint' is installed and dt-schema is up to
> > date:
> > 
> > pip3 install dtschema --upgrade
> > 
> > Please check and re-submit.
> 
> 
> I am very much responsible for this because of my patch [0] to get all the
> necessary headers for Tegra234. I was hoping this would be a good thing, but
> now I see this is a bit of a headache for maintainers.
> 
> So I am not sure what is a good way to handle this. We would like to get
> this merged for v6.2, and so please let me know if this is OK with you?
> Please note that this is similar to the other Tegra USB bindings you have
> reviewed for v6.2.

I think it'd be best for me to pick these up into the Tegra tree where
the dependency exists and where I already have the XUSB bindings
conversion patches for earlier chips. Looks like this is also not very
different from, say, the Tegra194 XUSB bindings, so should fit right in
there.

Thierry

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