Re: [PATCH RFC 1/2] dt-bindings: interrupt-controller: sifive,plic: Document Renesas RZ/Five SoC

Rob Herring
2022-06-05T14:23:47Z

On Tue, May 24, 2022 at 06:22:13PM +0100, Lad Prabhakar wrote:
> Document Renesas RZ/Five (R9A07G043) SoC.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
> .../sifive,plic-1.0.0.yaml | 38 +++++++++++++++++--
> 1 file changed, 35 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
> index 27092c6a86c4..78ff31cb63e5 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
> +++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
> @@ -28,7 +28,10 @@ description:
>
> While the PLIC supports both edge-triggered and level-triggered interrupts,
> interrupt handlers are oblivious to this distinction and therefore it is not
> - specified in the PLIC device-tree binding.
> + specified in the PLIC device-tree binding for SiFive PLIC (and similar PLIC's),
> + but for the Renesas RZ/Five Soc (AX45MP AndesCore) which has NCEPLIC100 we need
> + to specify the interrupt type as the flow for EDGE interrupts is different
> + compared to LEVEL interrupts.
>
> While the RISC-V ISA doesn't specify a memory layout for the PLIC, the
> "sifive,plic-1.0.0" device is a concrete implementation of the PLIC that
> @@ -57,6 +60,7 @@ properties:
> - enum:
> - allwinner,sun20i-d1-plic
> - const: thead,c900-plic
> + - const: renesas-r9a07g043-plic
>
> reg:
> maxItems: 1
> @@ -64,8 +68,7 @@ properties:
> '#address-cells':
> const: 0
>
> - '#interrupt-cells':
> - const: 1
> + '#interrupt-cells': true
>
> interrupt-controller: true
>
> @@ -91,6 +94,35 @@ required:
> - interrupts-extended
> - riscv,ndev
>
> +if:
> + properties:
> + compatible:
> + contains:
> + const: renesas-r9a07g043-plic
> +then:
> + properties:
> + clocks:
> + maxItems: 1
> +
> + resets:
> + maxItems: 1
> +
> + power-domains:
> + maxItems: 1

Did you test this? The above properties won't be allowed because of
additionalProperties below. You need to change it to
'unevaluatedProperties' or move these to the top level.

> +
> + '#interrupt-cells':
> + const: 2
> +
> + required:
> + - clocks
> + - resets
> + - power-domains
> +
> +else:
> + properties:
> + '#interrupt-cells':
> + const: 1
> +
> additionalProperties: false
>
> examples:
> --
> 2.25.1
>
>