[PATCH 0/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[PATCH 0/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Hi All,

This patch series updates renesas,scif.yaml to validate the 'interrupts'
and 'interrupt-names' properties for every supported SoC.

Cheers,
Prabhakar

Lad Prabhakar (2):
  dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end
  dt-bindings: serial: renesas,scif: Validate 'interrupts' and
    'interrupt-names'

 .../bindings/serial/renesas,scif.yaml         | 147 ++++++++++++------
 1 file changed, 100 insertions(+), 47 deletions(-)

-- 
2.34.1

[PATCH 1/2] dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

In preparation for adding more validation checks move the ref for
'serial.yaml' to the end and also move reset check in 'allOf' block.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 .../bindings/serial/renesas,scif.yaml         | 30 +++++++++----------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index 4610a5bd580c..af72c3420453 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -9,9 +9,6 @@ title: Renesas Serial Communication Interface with FIFO (SCIF)
 maintainers:
   - Geert Uytterhoeven <geert+renesas@glider.be>
 
-allOf:
-  - $ref: serial.yaml#
-
 properties:
   compatible:
     oneOf:
@@ -160,18 +157,21 @@ required:
   - clock-names
   - power-domains
 
-if:
-  properties:
-    compatible:
-      contains:
-        enum:
-          - renesas,rcar-gen2-scif
-          - renesas,rcar-gen3-scif
-          - renesas,rcar-gen4-scif
-          - renesas,scif-r9a07g044
-then:
-  required:
-    - resets
+allOf:
+  - $ref: serial.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,rcar-gen2-scif
+              - renesas,rcar-gen3-scif
+              - renesas,rcar-gen4-scif
+              - renesas,scif-r9a07g044
+    then:
+      required:
+        - resets
 
 unevaluatedProperties: false
 
-- 
2.34.1

Re: [PATCH 1/2] dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end

[Geert Uytterhoeven]

On Thu, Mar 7, 2024 at 12:11 AM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> In preparation for adding more validation checks move the ref for
> 'serial.yaml' to the end and also move reset check in 'allOf' block.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 1/2] dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end

[Krzysztof Kozlowski]

On 07/03/2024 00:10, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> 
> In preparation for adding more validation checks move the ref for
> 'serial.yaml' to the end and also move reset check in 'allOf' block.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
>  .../bindings/serial/renesas,scif.yaml         | 30 +++++++++----------
>  1 file changed, 15 insertions(+), 15 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> index 4610a5bd580c..af72c3420453 100644
> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -9,9 +9,6 @@ title: Renesas Serial Communication Interface with FIFO (SCIF)
>  maintainers:
>    - Geert Uytterhoeven <geert+renesas@glider.be>
>  
> -allOf:
> -  - $ref: serial.yaml#
> -
>  properties:
>    compatible:
>      oneOf:
> @@ -160,18 +157,21 @@ required:
>    - clock-names
>    - power-domains
>  
> -if:
> -  properties:
> -    compatible:
> -      contains:
> -        enum:
> -          - renesas,rcar-gen2-scif
> -          - renesas,rcar-gen3-scif
> -          - renesas,rcar-gen4-scif
> -          - renesas,scif-r9a07g044
> -then:
> -  required:
> -    - resets
> +allOf:
> +  - $ref: serial.yaml#
> +

Yeah, that's why usually we ask to put '$ref' and 'if' in allOf: block -
saves you one syntax reindent which will confuse git blame.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

[PATCH 2/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

This commit adds support to validate the 'interrupts' and 'interrupt-names'
properties for every supported SoC. This ensures proper handling and
configuration of interrupt-related properties across supported platforms.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 .../bindings/serial/renesas,scif.yaml         | 117 +++++++++++++-----
 1 file changed, 85 insertions(+), 32 deletions(-)

diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index af72c3420453..1a5f4568ae4f 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -82,38 +82,6 @@ properties:
   reg:
     maxItems: 1
 
-  interrupts:
-    oneOf:
-      - items:
-          - description: A combined interrupt
-      - items:
-          - description: Error interrupt
-          - description: Receive buffer full interrupt
-          - description: Transmit buffer empty interrupt
-          - description: Break interrupt
-      - items:
-          - description: Error interrupt
-          - description: Receive buffer full interrupt
-          - description: Transmit buffer empty interrupt
-          - description: Break interrupt
-          - description: Data Ready interrupt
-          - description: Transmit End interrupt
-
-  interrupt-names:
-    oneOf:
-      - items:
-          - const: eri
-          - const: rxi
-          - const: txi
-          - const: bri
-      - items:
-          - const: eri
-          - const: rxi
-          - const: txi
-          - const: bri
-          - const: dri
-          - const: tei
-
   clocks:
     minItems: 1
     maxItems: 4
@@ -173,6 +141,91 @@ allOf:
       required:
         - resets
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,scif-r8a7742
+              - renesas,scif-r8a7743
+              - renesas,scif-r8a7744
+              - renesas,scif-r8a7745
+              - renesas,scif-r8a77470
+              - renesas,scif-r8a774a1
+              - renesas,scif-r8a774b1
+              - renesas,scif-r8a774c0
+              - renesas,scif-r8a774e1
+              - renesas,scif-r8a7778
+              - renesas,scif-r8a7779
+              - renesas,scif-r8a7790
+              - renesas,scif-r8a7791
+              - renesas,scif-r8a7792
+              - renesas,scif-r8a7793
+              - renesas,scif-r8a7794
+              - renesas,scif-r8a7795
+              - renesas,scif-r8a7796
+              - renesas,scif-r8a77961
+              - renesas,scif-r8a77965
+              - renesas,scif-r8a77970
+              - renesas,scif-r8a77980
+              - renesas,scif-r8a77990
+              - renesas,scif-r8a77995
+              - renesas,scif-r8a779a0
+              - renesas,scif-r8a779f0
+              - renesas,scif-r8a779g0
+    then:
+      properties:
+        interrupts:
+          items:
+            - description: A combined interrupt
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,scif-r7s72100
+    then:
+      properties:
+        interrupts:
+          items:
+            - description: Error interrupt
+            - description: Receive buffer full interrupt
+            - description: Transmit buffer empty interrupt
+            - description: Break interrupt
+        interrupt-names:
+          items:
+            - const: eri
+            - const: rxi
+            - const: txi
+            - const: bri
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,scif-r7s9210
+              - renesas,scif-r9a07g044
+    then:
+      properties:
+        interrupts:
+          items:
+            - description: Error interrupt
+            - description: Receive buffer full interrupt
+            - description: Transmit buffer empty interrupt
+            - description: Break interrupt
+            - description: Data Ready interrupt
+            - description: Transmit End interrupt
+        interrupt-names:
+          items:
+            - const: eri
+            - const: rxi
+            - const: txi
+            - const: bri
+            - const: dri
+            - const: tei
+
 unevaluatedProperties: false
 
 examples:
-- 
2.34.1

Re: [PATCH 2/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Geert Uytterhoeven]

Hi Prabhakar,

On Thu, Mar 7, 2024 at 12:11 AM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> This commit adds support to validate the 'interrupts' and 'interrupt-names'
> properties for every supported SoC. This ensures proper handling and
> configuration of interrupt-related properties across supported platforms.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -82,38 +82,6 @@ properties:
>    reg:
>      maxItems: 1
>
> -  interrupts:
> -    oneOf:
> -      - items:
> -          - description: A combined interrupt
> -      - items:
> -          - description: Error interrupt
> -          - description: Receive buffer full interrupt
> -          - description: Transmit buffer empty interrupt
> -          - description: Break interrupt
> -      - items:
> -          - description: Error interrupt
> -          - description: Receive buffer full interrupt
> -          - description: Transmit buffer empty interrupt
> -          - description: Break interrupt
> -          - description: Data Ready interrupt
> -          - description: Transmit End interrupt

As the above three groups are increasing supersets, you can just use
a single "items" listing all 6 interrupts, and describe the first one
as "Error interrupt or single combined interrupt".  After that, the
SoC-specific logic at the end just needs to specify the appropriate
minItems/maxItems.

> -
> -  interrupt-names:
> -    oneOf:
> -      - items:
> -          - const: eri
> -          - const: rxi
> -          - const: txi
> -          - const: bri
> -      - items:
> -          - const: eri
> -          - const: rxi
> -          - const: txi
> -          - const: bri
> -          - const: dri
> -          - const: tei

Likewise, with "interrupt-names: false" below for the ones that don't
need it.

> -
>    clocks:
>      minItems: 1
>      maxItems: 4
> @@ -173,6 +141,91 @@ allOf:
>        required:
>          - resets
>
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,scif-r8a7742
> +              - renesas,scif-r8a7743
> +              - renesas,scif-r8a7744
> +              - renesas,scif-r8a7745
> +              - renesas,scif-r8a77470
> +              - renesas,scif-r8a774a1
> +              - renesas,scif-r8a774b1
> +              - renesas,scif-r8a774c0
> +              - renesas,scif-r8a774e1
> +              - renesas,scif-r8a7778
> +              - renesas,scif-r8a7779
> +              - renesas,scif-r8a7790
> +              - renesas,scif-r8a7791
> +              - renesas,scif-r8a7792
> +              - renesas,scif-r8a7793
> +              - renesas,scif-r8a7794
> +              - renesas,scif-r8a7795
> +              - renesas,scif-r8a7796
> +              - renesas,scif-r8a77961
> +              - renesas,scif-r8a77965
> +              - renesas,scif-r8a77970
> +              - renesas,scif-r8a77980
> +              - renesas,scif-r8a77990
> +              - renesas,scif-r8a77995
> +              - renesas,scif-r8a779a0
> +              - renesas,scif-r8a779f0
> +              - renesas,scif-r8a779g0

Please simplify using family-specific names:
  - renesas,rcar-gen1-scif
  - renesas,rcar-gen2-scif
  - renesas,rcar-gen3-scif
  - renesas,rcar-gen4-scif

> +    then:
> +      properties:
> +        interrupts:
> +          items:
> +            - description: A combined interrupt

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 2/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Lad, Prabhakar]

Hi Geert,

Thank you for the review.

On Thu, Mar 7, 2024 at 8:58 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> On Thu, Mar 7, 2024 at 12:11 AM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> >
> > This commit adds support to validate the 'interrupts' and 'interrupt-names'
> > properties for every supported SoC. This ensures proper handling and
> > configuration of interrupt-related properties across supported platforms.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Thanks for your patch!
>
> > --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> > +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> > @@ -82,38 +82,6 @@ properties:
> >    reg:
> >      maxItems: 1
> >
> > -  interrupts:
> > -    oneOf:
> > -      - items:
> > -          - description: A combined interrupt
> > -      - items:
> > -          - description: Error interrupt
> > -          - description: Receive buffer full interrupt
> > -          - description: Transmit buffer empty interrupt
> > -          - description: Break interrupt
> > -      - items:
> > -          - description: Error interrupt
> > -          - description: Receive buffer full interrupt
> > -          - description: Transmit buffer empty interrupt
> > -          - description: Break interrupt
> > -          - description: Data Ready interrupt
> > -          - description: Transmit End interrupt
>
> As the above three groups are increasing supersets, you can just use
> a single "items" listing all 6 interrupts, and describe the first one
> as "Error interrupt or single combined interrupt".  After that, the
> SoC-specific logic at the end just needs to specify the appropriate
> minItems/maxItems.
>
Agreed, I will do that.

> > -
> > -  interrupt-names:
> > -    oneOf:
> > -      - items:
> > -          - const: eri
> > -          - const: rxi
> > -          - const: txi
> > -          - const: bri
> > -      - items:
> > -          - const: eri
> > -          - const: rxi
> > -          - const: txi
> > -          - const: bri
> > -          - const: dri
> > -          - const: tei
>
> Likewise, with "interrupt-names: false" below for the ones that don't
> need it.
>
Agreed.

> > -
> >    clocks:
> >      minItems: 1
> >      maxItems: 4
> > @@ -173,6 +141,91 @@ allOf:
> >        required:
> >          - resets
> >
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,scif-r8a7742
> > +              - renesas,scif-r8a7743
> > +              - renesas,scif-r8a7744
> > +              - renesas,scif-r8a7745
> > +              - renesas,scif-r8a77470
> > +              - renesas,scif-r8a774a1
> > +              - renesas,scif-r8a774b1
> > +              - renesas,scif-r8a774c0
> > +              - renesas,scif-r8a774e1
> > +              - renesas,scif-r8a7778
> > +              - renesas,scif-r8a7779
> > +              - renesas,scif-r8a7790
> > +              - renesas,scif-r8a7791
> > +              - renesas,scif-r8a7792
> > +              - renesas,scif-r8a7793
> > +              - renesas,scif-r8a7794
> > +              - renesas,scif-r8a7795
> > +              - renesas,scif-r8a7796
> > +              - renesas,scif-r8a77961
> > +              - renesas,scif-r8a77965
> > +              - renesas,scif-r8a77970
> > +              - renesas,scif-r8a77980
> > +              - renesas,scif-r8a77990
> > +              - renesas,scif-r8a77995
> > +              - renesas,scif-r8a779a0
> > +              - renesas,scif-r8a779f0
> > +              - renesas,scif-r8a779g0
>
> Please simplify using family-specific names:
>   - renesas,rcar-gen1-scif
>   - renesas,rcar-gen2-scif
>   - renesas,rcar-gen3-scif
>   - renesas,rcar-gen4-scif
>
Yep, that makes sense.

Cheers,
Prabhakar

Re: [PATCH 2/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Krzysztof Kozlowski]

On 07/03/2024 00:10, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> 
> This commit adds support to validate the 'interrupts' and 'interrupt-names'
> properties for every supported SoC. This ensures proper handling and
> configuration of interrupt-related properties across supported platforms.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
>  .../bindings/serial/renesas,scif.yaml         | 117 +++++++++++++-----
>  1 file changed, 85 insertions(+), 32 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> index af72c3420453..1a5f4568ae4f 100644
> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -82,38 +82,6 @@ properties:
>    reg:
>      maxItems: 1
>  
> -  interrupts:

Properties should be defined in top-level block with widest constraints
(min/maxItems). Your if:then: narrows them per each variant.

> -    oneOf:
> -      - items:
> -          - description: A combined interrupt
> -      - items:
> -          - description: Error interrupt
> -          - description: Receive buffer full interrupt
> -          - description: Transmit buffer empty interrupt
> -          - description: Break interrupt
> -      - items:
> -          - description: Error interrupt
> -          - description: Receive buffer full interrupt
> -          - description: Transmit buffer empty interrupt
> -          - description: Break interrupt
> -          - description: Data Ready interrupt
> -          - description: Transmit End interrupt
> -
> -  interrupt-names:
> -    oneOf:
> -      - items:
> -          - const: eri
> -          - const: rxi
> -          - const: txi
> -          - const: bri
> -      - items:
> -          - const: eri
> -          - const: rxi
> -          - const: txi
> -          - const: bri
> -          - const: dri
> -          - const: tei

This probably could be:

        minItems: 4
        items:
          - const: eri
          - const: rxi
          - const: txi
          - const: bri
          - const: dri
          - const: tei

> -
>    clocks:
>      minItems: 1
>      maxItems: 4
> @@ -173,6 +141,91 @@ allOf:
>        required:
>          - resets
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,scif-r8a7742
> +              - renesas,scif-r8a7743
> +              - renesas,scif-r8a7744
> +              - renesas,scif-r8a7745
> +              - renesas,scif-r8a77470
> +              - renesas,scif-r8a774a1
> +              - renesas,scif-r8a774b1
> +              - renesas,scif-r8a774c0
> +              - renesas,scif-r8a774e1
> +              - renesas,scif-r8a7778
> +              - renesas,scif-r8a7779
> +              - renesas,scif-r8a7790
> +              - renesas,scif-r8a7791
> +              - renesas,scif-r8a7792
> +              - renesas,scif-r8a7793
> +              - renesas,scif-r8a7794
> +              - renesas,scif-r8a7795
> +              - renesas,scif-r8a7796
> +              - renesas,scif-r8a77961
> +              - renesas,scif-r8a77965
> +              - renesas,scif-r8a77970
> +              - renesas,scif-r8a77980
> +              - renesas,scif-r8a77990
> +              - renesas,scif-r8a77995
> +              - renesas,scif-r8a779a0
> +              - renesas,scif-r8a779f0
> +              - renesas,scif-r8a779g0

There is no way compatibility strings express it?


Best regards,
Krzysztof

Re: [PATCH 2/2] dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'

[Lad, Prabhakar]

Hi Krzysztof,

Thank you for the review.

On Thu, Mar 7, 2024 at 9:53 AM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 07/03/2024 00:10, Prabhakar wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> >
> > This commit adds support to validate the 'interrupts' and 'interrupt-names'
> > properties for every supported SoC. This ensures proper handling and
> > configuration of interrupt-related properties across supported platforms.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> > ---
> >  .../bindings/serial/renesas,scif.yaml         | 117 +++++++++++++-----
> >  1 file changed, 85 insertions(+), 32 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> > index af72c3420453..1a5f4568ae4f 100644
> > --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> > +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> > @@ -82,38 +82,6 @@ properties:
> >    reg:
> >      maxItems: 1
> >
> > -  interrupts:
>
> Properties should be defined in top-level block with widest constraints
> (min/maxItems). Your if:then: narrows them per each variant.
>
Agreed, I will fix that.

> > -    oneOf:
> > -      - items:
> > -          - description: A combined interrupt
> > -      - items:
> > -          - description: Error interrupt
> > -          - description: Receive buffer full interrupt
> > -          - description: Transmit buffer empty interrupt
> > -          - description: Break interrupt
> > -      - items:
> > -          - description: Error interrupt
> > -          - description: Receive buffer full interrupt
> > -          - description: Transmit buffer empty interrupt
> > -          - description: Break interrupt
> > -          - description: Data Ready interrupt
> > -          - description: Transmit End interrupt
> > -
> > -  interrupt-names:
> > -    oneOf:
> > -      - items:
> > -          - const: eri
> > -          - const: rxi
> > -          - const: txi
> > -          - const: bri
> > -      - items:
> > -          - const: eri
> > -          - const: rxi
> > -          - const: txi
> > -          - const: bri
> > -          - const: dri
> > -          - const: tei
>
> This probably could be:
>
>         minItems: 4
>         items:
>           - const: eri
>           - const: rxi
>           - const: txi
>           - const: bri
>           - const: dri
>           - const: tei
>
> > -
> >    clocks:
> >      minItems: 1
> >      maxItems: 4
> > @@ -173,6 +141,91 @@ allOf:
> >        required:
> >          - resets
> >
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - renesas,scif-r8a7742
> > +              - renesas,scif-r8a7743
> > +              - renesas,scif-r8a7744
> > +              - renesas,scif-r8a7745
> > +              - renesas,scif-r8a77470
> > +              - renesas,scif-r8a774a1
> > +              - renesas,scif-r8a774b1
> > +              - renesas,scif-r8a774c0
> > +              - renesas,scif-r8a774e1
> > +              - renesas,scif-r8a7778
> > +              - renesas,scif-r8a7779
> > +              - renesas,scif-r8a7790
> > +              - renesas,scif-r8a7791
> > +              - renesas,scif-r8a7792
> > +              - renesas,scif-r8a7793
> > +              - renesas,scif-r8a7794
> > +              - renesas,scif-r8a7795
> > +              - renesas,scif-r8a7796
> > +              - renesas,scif-r8a77961
> > +              - renesas,scif-r8a77965
> > +              - renesas,scif-r8a77970
> > +              - renesas,scif-r8a77980
> > +              - renesas,scif-r8a77990
> > +              - renesas,scif-r8a77995
> > +              - renesas,scif-r8a779a0
> > +              - renesas,scif-r8a779f0
> > +              - renesas,scif-r8a779g0
>
> There is no way compatibility strings express it?
>
I'll cut it short to below as suggested by Geert,

   - renesas,rcar-gen1-scif
   - renesas,rcar-gen2-scif
   - renesas,rcar-gen3-scif
   - renesas,rcar-gen4-scif

Cheers,
Prabhakar