diff mbox series

[1/1] dt-bindings: display: nwl-dsi: Allow 'data-lanes' property for port@1

Message ID 20241031194714.2398527-1-Frank.Li@nxp.com
State Changes Requested
Headers show
Series [1/1] dt-bindings: display: nwl-dsi: Allow 'data-lanes' property for port@1 | expand

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Commit Message

Frank Li Oct. 31, 2024, 7:47 p.m. UTC
Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
property referencing video-interfaces.yaml. Allow 'data-lanes' values
1, 2, 3, and 4 for port@1.

Fix below CHECK_DTB warnings:
arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
 dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

Comments

Dmitry Baryshkov Oct. 31, 2024, 7:59 p.m. UTC | #1
On Thu, Oct 31, 2024 at 03:47:14PM -0400, Frank Li wrote:
> Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
> property referencing video-interfaces.yaml. Allow 'data-lanes' values
> 1, 2, 3, and 4 for port@1.
> 
> Fix below CHECK_DTB warnings:
> arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
>  dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
>  .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> index 350fb8f400f02..5952e6448ed47 100644
> --- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> @@ -111,11 +111,27 @@ properties:
>          unevaluatedProperties: false
>  
>        port@1:
> -        $ref: /schemas/graph.yaml#/properties/port
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
>          description:
>            DSI output port node to the panel or the next bridge
>            in the chain
>  
> +        properties:
> +          endpoint:
> +            $ref: /schemas/media/video-interfaces.yaml#
> +            unevaluatedProperties: false
> +
> +            properties:
> +              data-lanes:
> +                description: array of physical DSI data lane indexes.
> +                minItems: 1
> +                items:
> +                  - const: 1
> +                  - const: 2
> +                  - const: 3
> +                  - const: 4

Why are they indexed starting from 1?

> +
>      required:
>        - port@0
>        - port@1
> -- 
> 2.34.1
>
Frank Li Oct. 31, 2024, 8:20 p.m. UTC | #2
On Thu, Oct 31, 2024 at 09:59:26PM +0200, Dmitry Baryshkov wrote:
> On Thu, Oct 31, 2024 at 03:47:14PM -0400, Frank Li wrote:
> > Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
> > property referencing video-interfaces.yaml. Allow 'data-lanes' values
> > 1, 2, 3, and 4 for port@1.
> >
> > Fix below CHECK_DTB warnings:
> > arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
> >  dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)
> >
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > ---
> >  .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
> >  1 file changed, 17 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > index 350fb8f400f02..5952e6448ed47 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > @@ -111,11 +111,27 @@ properties:
> >          unevaluatedProperties: false
> >
> >        port@1:
> > -        $ref: /schemas/graph.yaml#/properties/port
> > +        $ref: /schemas/graph.yaml#/$defs/port-base
> > +        unevaluatedProperties: false
> >          description:
> >            DSI output port node to the panel or the next bridge
> >            in the chain
> >
> > +        properties:
> > +          endpoint:
> > +            $ref: /schemas/media/video-interfaces.yaml#
> > +            unevaluatedProperties: false
> > +
> > +            properties:
> > +              data-lanes:
> > +                description: array of physical DSI data lane indexes.
> > +                minItems: 1
> > +                items:
> > +                  - const: 1
> > +                  - const: 2
> > +                  - const: 3
> > +                  - const: 4
>
> Why are they indexed starting from 1?

Not sure, git grep -r data-lanes Documentation/devicetree/bindings/
Most start from 1. Not sure latest DT team's intention.

Frank

>
> > +
> >      required:
> >        - port@0
> >        - port@1
> > --
> > 2.34.1
> >
>
> --
> With best wishes
> Dmitry
Dmitry Baryshkov Oct. 31, 2024, 8:55 p.m. UTC | #3
On Thu, Oct 31, 2024 at 04:20:10PM -0400, Frank Li wrote:
> On Thu, Oct 31, 2024 at 09:59:26PM +0200, Dmitry Baryshkov wrote:
> > On Thu, Oct 31, 2024 at 03:47:14PM -0400, Frank Li wrote:
> > > Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
> > > property referencing video-interfaces.yaml. Allow 'data-lanes' values
> > > 1, 2, 3, and 4 for port@1.
> > >
> > > Fix below CHECK_DTB warnings:
> > > arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
> > >  dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)
> > >
> > > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > > ---
> > >  .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
> > >  1 file changed, 17 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > > index 350fb8f400f02..5952e6448ed47 100644
> > > --- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > > +++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > > @@ -111,11 +111,27 @@ properties:
> > >          unevaluatedProperties: false
> > >
> > >        port@1:
> > > -        $ref: /schemas/graph.yaml#/properties/port
> > > +        $ref: /schemas/graph.yaml#/$defs/port-base
> > > +        unevaluatedProperties: false
> > >          description:
> > >            DSI output port node to the panel or the next bridge
> > >            in the chain
> > >
> > > +        properties:
> > > +          endpoint:
> > > +            $ref: /schemas/media/video-interfaces.yaml#
> > > +            unevaluatedProperties: false
> > > +
> > > +            properties:
> > > +              data-lanes:
> > > +                description: array of physical DSI data lane indexes.
> > > +                minItems: 1
> > > +                items:
> > > +                  - const: 1
> > > +                  - const: 2
> > > +                  - const: 3
> > > +                  - const: 4
> >
> > Why are they indexed starting from 1?
> 
> Not sure, git grep -r data-lanes Documentation/devicetree/bindings/
> Most start from 1. Not sure latest DT team's intention.

They usually start from 1, because just before the property comes
'clock-lanes = <0>'. Otherwise in most of the cases the lanes are
indexed from 0.

> 
> Frank
> 
> >
> > > +
> > >      required:
> > >        - port@0
> > >        - port@1
> > > --
> > > 2.34.1
> > >
> >
> > --
> > With best wishes
> > Dmitry
Laurent Pinchart Oct. 31, 2024, 9:14 p.m. UTC | #4
On Thu, Oct 31, 2024 at 10:55:30PM +0200, Dmitry Baryshkov wrote:
> On Thu, Oct 31, 2024 at 04:20:10PM -0400, Frank Li wrote:
> > On Thu, Oct 31, 2024 at 09:59:26PM +0200, Dmitry Baryshkov wrote:
> > > On Thu, Oct 31, 2024 at 03:47:14PM -0400, Frank Li wrote:
> > > > Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
> > > > property referencing video-interfaces.yaml. Allow 'data-lanes' values
> > > > 1, 2, 3, and 4 for port@1.
> > > >
> > > > Fix below CHECK_DTB warnings:
> > > > arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
> > > >  dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)
> > > >
> > > > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > > > ---
> > > >  .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
> > > >  1 file changed, 17 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > > > index 350fb8f400f02..5952e6448ed47 100644
> > > > --- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > > > +++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> > > > @@ -111,11 +111,27 @@ properties:
> > > >          unevaluatedProperties: false
> > > >
> > > >        port@1:
> > > > -        $ref: /schemas/graph.yaml#/properties/port
> > > > +        $ref: /schemas/graph.yaml#/$defs/port-base
> > > > +        unevaluatedProperties: false
> > > >          description:
> > > >            DSI output port node to the panel or the next bridge
> > > >            in the chain
> > > >
> > > > +        properties:
> > > > +          endpoint:
> > > > +            $ref: /schemas/media/video-interfaces.yaml#
> > > > +            unevaluatedProperties: false
> > > > +
> > > > +            properties:
> > > > +              data-lanes:
> > > > +                description: array of physical DSI data lane indexes.
> > > > +                minItems: 1
> > > > +                items:
> > > > +                  - const: 1
> > > > +                  - const: 2
> > > > +                  - const: 3
> > > > +                  - const: 4
> > >
> > > Why are they indexed starting from 1?
> > 
> > Not sure, git grep -r data-lanes Documentation/devicetree/bindings/
> > Most start from 1. Not sure latest DT team's intention.
> 
> They usually start from 1, because just before the property comes
> 'clock-lanes = <0>'. Otherwise in most of the cases the lanes are
> indexed from 0.

I'm not sure what the rule is for DSI, but for CSI we number data lanes
starting at 1 regardless of whether or not the clock lane is
configurable. Consistency help for driver implementations.

> > > > +
> > > >      required:
> > > >        - port@0
> > > >        - port@1
Rob Herring Nov. 4, 2024, 3:40 p.m. UTC | #5
On Thu, Oct 31, 2024 at 03:47:14PM -0400, Frank Li wrote:
> Change $ref of port@1 from 'port' to 'port-base' and add 'endpoint'
> property referencing video-interfaces.yaml. Allow 'data-lanes' values
> 1, 2, 3, and 4 for port@1.

Describe "why", not what the changes are. I can read the diff. Why is 
the IP has a configurable number of lanes...

> 
> Fix below CHECK_DTB warnings:
> arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx-lvds-tm070jvhg33.dtb:
>  dsi@30a00000: ports:port@1:endpoint: Unevaluated properties are not allowed ('data-lanes' was unexpected)
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
>  .../bindings/display/bridge/nwl-dsi.yaml       | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> index 350fb8f400f02..5952e6448ed47 100644
> --- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
> @@ -111,11 +111,27 @@ properties:
>          unevaluatedProperties: false
>  
>        port@1:
> -        $ref: /schemas/graph.yaml#/properties/port
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
>          description:
>            DSI output port node to the panel or the next bridge
>            in the chain
>  
> +        properties:
> +          endpoint:
> +            $ref: /schemas/media/video-interfaces.yaml#
> +            unevaluatedProperties: false
> +
> +            properties:
> +              data-lanes:
> +                description: array of physical DSI data lane indexes.
> +                minItems: 1
> +                items:
> +                  - const: 1
> +                  - const: 2
> +                  - const: 3
> +                  - const: 4
> +
>      required:
>        - port@0
>        - port@1
> -- 
> 2.34.1
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
index 350fb8f400f02..5952e6448ed47 100644
--- a/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
@@ -111,11 +111,27 @@  properties:
         unevaluatedProperties: false
 
       port@1:
-        $ref: /schemas/graph.yaml#/properties/port
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
         description:
           DSI output port node to the panel or the next bridge
           in the chain
 
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description: array of physical DSI data lane indexes.
+                minItems: 1
+                items:
+                  - const: 1
+                  - const: 2
+                  - const: 3
+                  - const: 4
+
     required:
       - port@0
       - port@1