linux-kernel - Re: [PATCH v3 03/11] dt-bindings: mmc: Add Pensando Elba SoC binding

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Message-ID: <CAK9rFnyk=gW_ZRZUci3byu=DNwdrmKBb30HQgxK0iWJuVVPbfQ@mail.gmail.com>
Date:   Tue, 16 Nov 2021 17:21:41 -0800
From:   Brad Larson <brad@...sando.io>
To:     Rob Herring <robh@...nel.org>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Mark Brown <broonie@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Olof Johansson <olof@...om.net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 03/11] dt-bindings: mmc: Add Pensando Elba SoC binding

Hi Rob,

On Tue, Oct 26, 2021 at 11:10 AM Rob Herring <robh@...nel.org> wrote:
>
> On Sun, Oct 24, 2021 at 06:51:48PM -0700, Brad Larson wrote:
> > Pensando Elba ARM 64-bit SoC is integrated with this IP and
> > explicitly controls byte-lane enables resulting in an additional
> > reg property resource.
> >
> > Signed-off-by: Brad Larson <brad@...sando.io>
> > ---
> >  .../devicetree/bindings/mmc/cdns,sdhci.yaml         | 13 ++++++++-----
> >  1 file changed, 8 insertions(+), 5 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> > index af7442f73881..6c68b7b5abec 100644
> > --- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> > +++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> > @@ -15,13 +15,16 @@ allOf:
> >
> >  properties:
> >    compatible:
> > -    items:
> > -      - enum:
> > -          - socionext,uniphier-sd4hc
> > -      - const: cdns,sd4hc
> > +    oneOf:
> > +      - items:
> > +        - enum:
> > +            - socionext,uniphier-sd4hc
> > +            - pensando,elba-emmc
> > +        - const: cdns,sd4hc
> >
> >    reg:
> > -    maxItems: 1
> > +    minItems: 1
> > +    maxItems: 2
>
> If there is more than 1, then you need to describe what each entry is.

The dtschema update and yamllint install shows the errors your bot
reported.  With the updated cdns,sdhci.yaml to add the description for
Elba's two reg items this is what I'm getting with in 5.16.0-rc1
(next-20211116):

diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
index 4207fed62dfe..c01a7283c468 100644
--- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
@@ -12,17 +12,44 @@ maintainers:

 allOf:
   - $ref: mmc-controller.yaml
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - socionext,uniphier-sd4hc
+    then:
+      properties:
+        reg:
+          maxItems: 1
+          items:
+            - description: SDHCI CDNS HRS registers
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - pensando,elba-emmc
+    then:
+      properties:
+        reg:
+          maxItems: 2
+          items:
+            - description: SDHCI CDNS HRS registers
+            - description: Byte lane control register

 properties:
   compatible:
-    items:
-      - enum:
-          - microchip,mpfs-sd4hc
-          - socionext,uniphier-sd4hc
-      - const: cdns,sd4hc
+    oneOf:
+      - items:
+          - enum:
+              - socionext,uniphier-sd4hc
+              - pensando,elba-emmc
+          - const: cdns,sd4hc

   reg:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2

   interrupts:
     maxItems: 1

$ make DT_CHECKER_FLAGS=-m dt_binding_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
  LINT    Documentation/devicetree/bindings
  CHKDT   Documentation/devicetree/bindings/processed-schema-examples.json
  SCHEMA  Documentation/devicetree/bindings/processed-schema-examples.json
...
  DTEX    Documentation/devicetree/bindings/mmc/cdns,sdhci.example.dts
  DTC     Documentation/devicetree/bindings/mmc/cdns,sdhci.example.dt.yaml
  CHECK   Documentation/devicetree/bindings/mmc/cdns,sdhci.example.dt.yaml

These errors are reported for unrelated files not on DT_SCHEMA_FILES

bindings/net/qcom,ipa.yaml: ignoring, error in schema: properties:
qcom,smem-state-names
bindings/iio/adc/st,stm32-dfsdm-adc.yaml: ignoring, error in schema:
patternProperties: ^filter@[0-9]+$: properties: st,adc-channel-names
bindings/interconnect/qcom,rpmh.yaml: ignoring, error in schema:
properties: qcom,bcm-voter-names

Thanks,
Brad