2019-08-22 11:39:15

by Lubomir Rintel

[permalink] [raw]
Subject: [PATCH v2 02/20] dt-bindings: arm: Convert Marvell MMP board/soc bindings to json-schema

Convert Marvell MMP SoC bindings to DT schema format using json-schema.

Signed-off-by: Lubomir Rintel <[email protected]>

---
Changes since v1:
- Added this patch

.../devicetree/bindings/arm/mrvl/mrvl.txt | 14 ---------
.../devicetree/bindings/arm/mrvl/mrvl.yaml | 31 +++++++++++++++++++
2 files changed, 31 insertions(+), 14 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
create mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml

diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt b/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
deleted file mode 100644
index 951687528efb0..0000000000000
--- a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-Marvell Platforms Device Tree Bindings
-----------------------------------------------------
-
-PXA168 Aspenite Board
-Required root node properties:
- - compatible = "mrvl,pxa168-aspenite", "mrvl,pxa168";
-
-PXA910 DKB Board
-Required root node properties:
- - compatible = "mrvl,pxa910-dkb";
-
-MMP2 Brownstone Board
-Required root node properties:
- - compatible = "mrvl,mmp2-brownstone", "mrvl,mmp2";
diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
new file mode 100644
index 0000000000000..dc9de506ac6e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/mrvl/mrvl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Platforms Device Tree Bindings
+
+maintainers:
+ - Lubomir Rintel <[email protected]>
+
+properties:
+ $nodename:
+ const: '/'
+ compatible:
+ oneOf:
+ - description: PXA168 Aspenite Board
+ items:
+ - enum:
+ - mrvl,pxa168-aspenite
+ - const: mrvl,pxa168
+ - description: PXA910 DKB Board
+ items:
+ - enum:
+ - mrvl,pxa910-dkb
+ - description: MMP2 Brownstone Board
+ items:
+ - enum:
+ - mrvl,mmp2-brownstone
+ - const: mrvl,mmp2
+...
--
2.21.0


2019-08-27 12:03:34

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH v2 02/20] dt-bindings: arm: Convert Marvell MMP board/soc bindings to json-schema

On Thu, Aug 22, 2019 at 4:27 AM Lubomir Rintel <[email protected]> wrote:
>
> Convert Marvell MMP SoC bindings to DT schema format using json-schema.
>
> Signed-off-by: Lubomir Rintel <[email protected]>
>
> ---
> Changes since v1:
> - Added this patch
>
> .../devicetree/bindings/arm/mrvl/mrvl.txt | 14 ---------
> .../devicetree/bindings/arm/mrvl/mrvl.yaml | 31 +++++++++++++++++++
> 2 files changed, 31 insertions(+), 14 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> create mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
>
> diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt b/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> deleted file mode 100644
> index 951687528efb0..0000000000000
> --- a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> +++ /dev/null
> @@ -1,14 +0,0 @@
> -Marvell Platforms Device Tree Bindings
> -----------------------------------------------------
> -
> -PXA168 Aspenite Board
> -Required root node properties:
> - - compatible = "mrvl,pxa168-aspenite", "mrvl,pxa168";
> -
> -PXA910 DKB Board
> -Required root node properties:
> - - compatible = "mrvl,pxa910-dkb";
> -
> -MMP2 Brownstone Board
> -Required root node properties:
> - - compatible = "mrvl,mmp2-brownstone", "mrvl,mmp2";
> diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> new file mode 100644
> index 0000000000000..dc9de506ac6e3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> @@ -0,0 +1,31 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/mrvl/mrvl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Marvell Platforms Device Tree Bindings
> +
> +maintainers:
> + - Lubomir Rintel <[email protected]>
> +
> +properties:
> + $nodename:
> + const: '/'
> + compatible:
> + oneOf:
> + - description: PXA168 Aspenite Board
> + items:
> + - enum:
> + - mrvl,pxa168-aspenite
> + - const: mrvl,pxa168
> + - description: PXA910 DKB Board
> + items:
> + - enum:
> + - mrvl,pxa910-dkb

Doesn't match what's in dts file:

arch/arm/boot/dts/pxa910-dkb.dts: compatible =
"mrvl,pxa910-dkb", "mrvl,pxa910";

> + - description: MMP2 Brownstone Board

If this entry is only for this board...

> + items:
> + - enum:
> + - mrvl,mmp2-brownstone

...then this can be a 'const' instead. Same for the others.

> + - const: mrvl,mmp2
> +...
> --
> 2.21.0
>

2019-08-27 13:27:00

by Lubomir Rintel

[permalink] [raw]
Subject: Re: [PATCH v2 02/20] dt-bindings: arm: Convert Marvell MMP board/soc bindings to json-schema

On Tue, 2019-08-27 at 06:59 -0500, Rob Herring wrote:
> On Thu, Aug 22, 2019 at 4:27 AM Lubomir Rintel <[email protected]> wrote:
> > Convert Marvell MMP SoC bindings to DT schema format using json-schema.
> >
> > Signed-off-by: Lubomir Rintel <[email protected]>
> >
> > ---
> > Changes since v1:
> > - Added this patch
> >
> > .../devicetree/bindings/arm/mrvl/mrvl.txt | 14 ---------
> > .../devicetree/bindings/arm/mrvl/mrvl.yaml | 31 +++++++++++++++++++
> > 2 files changed, 31 insertions(+), 14 deletions(-)
> > delete mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> > create mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt b/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> > deleted file mode 100644
> > index 951687528efb0..0000000000000
> > --- a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> > +++ /dev/null
> > @@ -1,14 +0,0 @@
> > -Marvell Platforms Device Tree Bindings
> > -----------------------------------------------------
> > -
> > -PXA168 Aspenite Board
> > -Required root node properties:
> > - - compatible = "mrvl,pxa168-aspenite", "mrvl,pxa168";
> > -
> > -PXA910 DKB Board
> > -Required root node properties:
> > - - compatible = "mrvl,pxa910-dkb";
> > -
> > -MMP2 Brownstone Board
> > -Required root node properties:
> > - - compatible = "mrvl,mmp2-brownstone", "mrvl,mmp2";
> > diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> > new file mode 100644
> > index 0000000000000..dc9de506ac6e3
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> > @@ -0,0 +1,31 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/arm/mrvl/mrvl.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Marvell Platforms Device Tree Bindings
> > +
> > +maintainers:
> > + - Lubomir Rintel <[email protected]>
> > +
> > +properties:
> > + $nodename:
> > + const: '/'
> > + compatible:
> > + oneOf:
> > + - description: PXA168 Aspenite Board
> > + items:
> > + - enum:
> > + - mrvl,pxa168-aspenite
> > + - const: mrvl,pxa168
> > + - description: PXA910 DKB Board
> > + items:
> > + - enum:
> > + - mrvl,pxa910-dkb
>
> Doesn't match what's in dts file:
>
> arch/arm/boot/dts/pxa910-dkb.dts: compatible =
> "mrvl,pxa910-dkb", "mrvl,pxa910";

It corresponds to the .txt bindings specification this commit is
converting. I thought it wouldn't be a good idea to do any changes to
the contents at the time the conversion is done.

I also don't understand why does the dts file specify the board-
specific compatible string. Surely "mrvl,pxa910" alone would be
sufficient?

> > + - description: MMP2 Brownstone Board
>
> If this entry is only for this board...
>
> > + items:
> > + - enum:
> > + - mrvl,mmp2-brownstone
>
> ...then this can be a 'const' instead. Same for the others.

Sure, but is it preferable? I've actually done a "git grep -A3 enum
Documentation/devicetree/bindings/" to see if the single-element is
typically used and it seems like it is. Perhaps it's a good idea to
indicate to a human reader that this is a list that's expected to
eventually be extended with new elements.

In any case, there are more boards with MMP2 currently supported,
notably the XO-1.75 laptop. I've actually sent out the dts file for
review some time ago. I haven't added a separate compatible string for
it because I thought it is not necessary (see above).

> > + - const: mrvl,mmp2
> > +...
> > --
> > 2.21.0

Thank you
Lubo

2019-08-27 13:38:34

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH v2 02/20] dt-bindings: arm: Convert Marvell MMP board/soc bindings to json-schema

On Tue, Aug 27, 2019 at 8:24 AM Lubomir Rintel <[email protected]> wrote:
>
> On Tue, 2019-08-27 at 06:59 -0500, Rob Herring wrote:
> > On Thu, Aug 22, 2019 at 4:27 AM Lubomir Rintel <[email protected]> wrote:
> > > Convert Marvell MMP SoC bindings to DT schema format using json-schema.
> > >
> > > Signed-off-by: Lubomir Rintel <[email protected]>
> > >
> > > ---
> > > Changes since v1:
> > > - Added this patch
> > >
> > > .../devicetree/bindings/arm/mrvl/mrvl.txt | 14 ---------
> > > .../devicetree/bindings/arm/mrvl/mrvl.yaml | 31 +++++++++++++++++++
> > > 2 files changed, 31 insertions(+), 14 deletions(-)
> > > delete mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> > > create mode 100644 Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt b/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> > > deleted file mode 100644
> > > index 951687528efb0..0000000000000
> > > --- a/Documentation/devicetree/bindings/arm/mrvl/mrvl.txt
> > > +++ /dev/null
> > > @@ -1,14 +0,0 @@
> > > -Marvell Platforms Device Tree Bindings
> > > -----------------------------------------------------
> > > -
> > > -PXA168 Aspenite Board
> > > -Required root node properties:
> > > - - compatible = "mrvl,pxa168-aspenite", "mrvl,pxa168";
> > > -
> > > -PXA910 DKB Board
> > > -Required root node properties:
> > > - - compatible = "mrvl,pxa910-dkb";
> > > -
> > > -MMP2 Brownstone Board
> > > -Required root node properties:
> > > - - compatible = "mrvl,mmp2-brownstone", "mrvl,mmp2";
> > > diff --git a/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> > > new file mode 100644
> > > index 0000000000000..dc9de506ac6e3
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/arm/mrvl/mrvl.yaml
> > > @@ -0,0 +1,31 @@
> > > +# SPDX-License-Identifier: GPL-2.0
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/arm/mrvl/mrvl.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Marvell Platforms Device Tree Bindings
> > > +
> > > +maintainers:
> > > + - Lubomir Rintel <[email protected]>
> > > +
> > > +properties:
> > > + $nodename:
> > > + const: '/'
> > > + compatible:
> > > + oneOf:
> > > + - description: PXA168 Aspenite Board
> > > + items:
> > > + - enum:
> > > + - mrvl,pxa168-aspenite
> > > + - const: mrvl,pxa168
> > > + - description: PXA910 DKB Board
> > > + items:
> > > + - enum:
> > > + - mrvl,pxa910-dkb
> >
> > Doesn't match what's in dts file:
> >
> > arch/arm/boot/dts/pxa910-dkb.dts: compatible =
> > "mrvl,pxa910-dkb", "mrvl,pxa910";
>
> It corresponds to the .txt bindings specification this commit is
> converting. I thought it wouldn't be a good idea to do any changes to
> the contents at the time the conversion is done.

There are so many errors like this, that it's fine to do it in the
conversion. A separate patch is fine too.

> I also don't understand why does the dts file specify the board-
> specific compatible string. Surely "mrvl,pxa910" alone would be
> sufficient?

To potentially work around any board specific issue without a dtb change.

>
> > > + - description: MMP2 Brownstone Board
> >
> > If this entry is only for this board...
> >
> > > + items:
> > > + - enum:
> > > + - mrvl,mmp2-brownstone
> >
> > ...then this can be a 'const' instead. Same for the others.
>
> Sure, but is it preferable? I've actually done a "git grep -A3 enum
> Documentation/devicetree/bindings/" to see if the single-element is
> typically used and it seems like it is. Perhaps it's a good idea to
> indicate to a human reader that this is a list that's expected to
> eventually be extended with new elements.

Then the description should match and say 'MMP2 based boards'.

> In any case, there are more boards with MMP2 currently supported,
> notably the XO-1.75 laptop. I've actually sent out the dts file for
> review some time ago. I haven't added a separate compatible string for
> it because I thought it is not necessary (see above).

You should add one.

Rob