linux-kernel - Re: [PATCH v2] dt-bindings: serial: renesas,scif: Document R9A09G057 support

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Date: Thu, 7 Mar 2024 18:09:53 +0000
From: Conor Dooley <conor@...nel.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>, Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2] dt-bindings: serial: renesas,scif: Document R9A09G057
 support

On Thu, Mar 07, 2024 at 11:47:31AM +0000, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> 
> Document support for the Serial Communication Interface with FIFO (SCIF)
> available in the Renesas RZ/V2H(P) (R9A09G057) SoC. The SCIF interface in
> the Renesas RZ/V2H(P) is similar to that available in the RZ/G2L
> (R9A07G044) SoC, with the only difference being that the RZ/V2H(P) SoC has
> three additional interrupts: one for Tx end/Rx ready and the other two for
> Rx and Tx buffer full, which are edge-triggered.
> 
> No driver changes are required as generic compatible string
> "renesas,scif-r9a07g044" will be used as a fallback on RZ/V2H(P) SoC.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@...esas.com>

Acked-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.

> ---
> v1->v2
> * Added validation to check interrupts and interrupt-names count
> 
> Note, this patch applies on top of series [0].
> 
> [0] https://patchwork.ozlabs.org/project/devicetree-bindings/cover/20240307114217.34784-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
> ---
>  .../bindings/serial/renesas,scif.yaml         | 31 ++++++++++++++++---
>  1 file changed, 27 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> index 6ba6b6d52208..a9c60334d702 100644
> --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
> @@ -77,6 +77,7 @@ properties:
>                - renesas,scif-r9a07g043      # RZ/G2UL and RZ/Five
>                - renesas,scif-r9a07g054      # RZ/V2L
>                - renesas,scif-r9a08g045      # RZ/G3S
> +              - renesas,scif-r9a09g057      # RZ/V2H(P)
>            - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
>  
>    reg:
> @@ -91,6 +92,9 @@ properties:
>        - description: Break interrupt
>        - description: Data Ready interrupt
>        - description: Transmit End interrupt
> +      - description: Transmit End/Data Ready interrupt
> +      - description: Receive buffer full interrupt (EDGE trigger)
> +      - description: Transmit buffer empty interrupt (EDGE trigger)
>  
>    interrupt-names:
>      minItems: 4
> @@ -101,6 +105,9 @@ properties:
>        - const: bri
>        - const: dri
>        - const: tei
> +      - const: teidri
> +      - const: rxi-edge
> +      - const: txi-edge
>  
>    clocks:
>      minItems: 1
> @@ -197,15 +204,31 @@ allOf:
>          compatible:
>            contains:
>              enum:
> -              - renesas,scif-r7s9210
> -              - renesas,scif-r9a07g044
> +              - renesas,scif-r9a09g057
>      then:
>        properties:
>          interrupts:
> -          minItems: 6
> +          minItems: 9
>  
>          interrupt-names:
> -          minItems: 6
> +          minItems: 9
> +    else:
> +      if:
> +        properties:
> +          compatible:
> +            contains:
> +              enum:
> +                - renesas,scif-r7s9210
> +                - renesas,scif-r9a07g044
> +      then:
> +        properties:
> +          interrupts:
> +            minItems: 6
> +            maxItems: 6
> +
> +          interrupt-names:
> +            minItems: 6
> +            maxItems: 6
>  
>  unevaluatedProperties: false
>  
> -- 
> 2.34.1
> 

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