linux-kernel - Re: [PATCH 03/15] dt-bindings: memory: fsl: convert ifc binding to yaml schema

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Message-ID: <20210208182113.GA1648694@robh.at.kernel.org>
Date:   Mon, 8 Feb 2021 12:21:13 -0600
From:   Rob Herring <robh@...nel.org>
To:     Leo Li <leoyang.li@....com>
Cc:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Shawn Guo <shawnguo@...nel.org>
Subject: Re: [PATCH 03/15] dt-bindings: memory: fsl: convert ifc binding to
 yaml schema

On Mon, Feb 08, 2021 at 05:07:14PM +0000, Leo Li wrote:
> 
> 
> > -----Original Message-----
> > From: Rob Herring <robh@...nel.org>
> > Sent: Monday, February 8, 2021 10:55 AM
> > To: Leo Li <leoyang.li@....com>
> > Cc: linux-arm-kernel@...ts.infradead.org; Oleksij Rempel <linux@...pel-
> > privat.de>; Rob Herring <robh+dt@...nel.org>; Krzysztof Kozlowski
> > <krzk@...nel.org>; devicetree@...r.kernel.org; linux-
> > kernel@...r.kernel.org; Shawn Guo <shawnguo@...nel.org>
> > Subject: Re: [PATCH 03/15] dt-bindings: memory: fsl: convert ifc binding to
> > yaml schema
> > 
> > On Fri, 05 Feb 2021 17:47:22 -0600, Li Yang wrote:
> > > Convert the txt binding to yaml format and add description.  Also
> > > updated the recommended node name to ifc-bus to align with the
> > > simple-bus node name requirements.
> > >
> > > Signed-off-by: Li Yang <leoyang.li@....com>
> > > ---
> > >  .../bindings/memory-controllers/fsl/ifc.txt   |  82 ----------
> > >  .../bindings/memory-controllers/fsl/ifc.yaml  | 140
> > > ++++++++++++++++++
> > >  2 files changed, 140 insertions(+), 82 deletions(-)  delete mode
> > > 100644
> > > Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
> > >  create mode 100644
> > > Documentation/devicetree/bindings/memory-controllers/fsl/ifc.yaml
> > >
> > 
> > My bot found errors running 'make dt_binding_check' on your patch:
> > 
> > yamllint warnings/errors:
> > 
> > dtschema/dtc warnings/errors:
> > Documentation/devicetree/bindings/memory-
> > controllers/fsl/ifc.example.dts:36.27-49.19: Warning (simple_bus_reg):
> > /example-0/soc/ifc-bus@...1e000/flash@0,0: simple-bus unit address
> > format error, expected "0"
> > Documentation/devicetree/bindings/memory-
> > controllers/fsl/ifc.example.dts:51.27-64.19: Warning (simple_bus_reg):
> > /example-0/soc/ifc-bus@...1e000/flash@1,0: simple-bus unit address
> > format error, expected "100000000"
> > Documentation/devicetree/bindings/memory-
> > controllers/fsl/ifc.example.dts:66.26-71.19: Warning (simple_bus_reg):
> > /example-0/soc/ifc-bus@...1e000/cpld@3,0: simple-bus unit address format
> > error, expected "300000000"
> 
> Hi Rob,
> 
> I saw these warnings, but cannot find a good solution to it.  The 
> first cell in the address is the Chip select, while the second cell 
> in the address is the address offset within the chip select.  It 
> would confusing to combine the two cells of different purposes into 
> a single address as suggested by the warning.  Can we allow the 
> multi-cell address in the node name?

Drop 'simple-bus'. It's not a simple bus. You have registers that 
presumably have some configuration needed.

Rob