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From:   Rob Herring <robh+dt@kernel.org>
Date:   Tue, 16 Jul 2019 08:57:21 -0600
Message-ID: <CAL_JsqKMo_uv4Ur-D4NaUXk94hGJeRt5fg+0998dDjJCTgumGg@mail.gmail.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: mmc: Document Aspeed SD controller
To:     Andrew Jeffery <andrew@aj.id.au>
Cc:     linux-mmc <linux-mmc@vger.kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Joel Stanley <joel@jms.id.au>,
        Adrian Hunter <adrian.hunter@intel.com>,
        devicetree@vger.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>,
        linux-aspeed@lists.ozlabs.org,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Ryan Chen <ryanchen.aspeed@gmail.com>
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On Mon, Jul 15, 2019 at 6:36 PM Andrew Jeffery <andrew@aj.id.au> wrote:
>
>
>
> On Tue, 16 Jul 2019, at 07:47, Rob Herring wrote:
> > On Thu, Jul 11, 2019 at 9:32 PM Andrew Jeffery <andrew@aj.id.au> wrote:
> > >
> > > The ASPEED SD/SDIO/eMMC controller exposes two slots implementing the
> > > SDIO Host Specification v2.00, with 1 or 4 bit data buses, or an 8 bit
> > > data bus if only a single slot is enabled.
> > >
> > > Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
> > > ---
> > > In v2:
> > >
> > > * Rename to aspeed,sdhci.yaml
> > > * Rename sd-controller compatible
> > > * Add `maxItems: 1` for reg properties
> > > * Move sdhci subnode description to patternProperties
> > > * Drop sdhci compatible requirement
> > > * #address-cells and #size-cells are required
> > > * Prevent additional properties
> > > * Implement explicit ranges in example
> > > * Remove slot property
> > >
> > >  .../devicetree/bindings/mmc/aspeed,sdhci.yaml | 90 +++++++++++++++++++
> > >  1 file changed, 90 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml b/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
> > > new file mode 100644
> > > index 000000000000..67a691c3348c
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
> > > @@ -0,0 +1,90 @@
> > > +# SPDX-License-Identifier: GPL-2.0-or-later
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/mmc/aspeed,sdhci.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: ASPEED SD/SDIO/eMMC Controller
> > > +
> > > +maintainers:
> > > +  - Andrew Jeffery <andrew@aj.id.au>
> > > +  - Ryan Chen <ryanchen.aspeed@gmail.com>
> > > +
> > > +description: |+
> > > +  The ASPEED SD/SDIO/eMMC controller exposes two slots implementing the SDIO
> > > +  Host Specification v2.00, with 1 or 4 bit data buses, or an 8 bit data bus if
> > > +  only a single slot is enabled.
> > > +
> > > +  The two slots are supported by a common configuration area. As the SDHCIs for
> > > +  the slots are dependent on the common configuration area, they are described
> > > +  as child nodes.
> > > +
> > > +properties:
> > > +  compatible:
> > > +    enum: [ aspeed,ast2400-sd-controller, aspeed,ast2500-sd-controller ]
> >
> > This is actually a list of 4 strings. Please reformat to 1 per line.
>
> On reflection that's obvious, but also a somewhat subtle interaction with the
> preference for no quotes (the obvious caveat being "except where required").

It wasn't something I'd run into before. I'm working on a check, but
unfortunately we can only check for quotes not needed and can't check
for missing quotes.

> Thanks for pointing it out.
>
> I have been running `make dt_binding_check` and `make dtbs_check` over
> these, looks like I need to up my game a bit though. Do you do additional things
> in your workflow?

That should have thrown the warnings. If you aren't seeing those, do
you have dtschema package installed (see
Documentation/devicetree/writing-schema.md)? Or it could be erroring
out on something else first. There's a few breakages that I'm trying
to fix.

Rob