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

Lad, Prabhakar
2022-06-24T10:00:16Z

Hi Rob,

Thank you for the review.

On Sun, Jun 5, 2022 at 3:23 PM Rob Herring <robh@kernel.org> wrote:
>
> 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.
>
Yes I have run the dt_binding check.

So with the below diff it does complain about the missing properties.

prasmi@prasmi:~/work/renasas/renesas-drivers$ git diff
Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
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 20ded037d444..bb14a4b1ec0a 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
@@ -130,7 +130,7 @@ examples:
plic: interrupt-controller@c000000 {
#address-cells = <0>;
#interrupt-cells = <1>;
- compatible = "sifive,fu540-c000-plic", "sifive,plic-1.0.0";
+ compatible = "renesas-r9a07g043-plic";
interrupt-controller;
interrupts-extended = <&cpu0_intc 11>,
<&cpu1_intc 11>, <&cpu1_intc 9>,
prasmi@prasmi:~/work/renasas/renesas-drivers$ make ARCH=riscv
CROSS_COMPILE=riscv64-linux-gnu- dt_binding_check
LINT Documentation/devicetree/bindings
CHKDT Documentation/devicetree/bindings/processed-schema.json
SCHEMA Documentation/devicetree/bindings/processed-schema.json
DTEX Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dts
DTC Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dtb
CHECK Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dtb
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dtb:
interrupt-controller@c000000: #interrupt-cells:0:0: 2 was expected
From schema:
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dtb:
interrupt-controller@c000000: 'clocks' is a required property
From schema:
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dtb:
interrupt-controller@c000000: 'resets' is a required property
From schema:
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.example.dtb:
interrupt-controller@c000000: 'power-domains' is a required property
From schema:
/home/prasmi/work/renasas/renesas-drivers/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
prasmi@prasmi:~/work/renasas/renesas-drivers$
prasmi@prasmi:~/work/renasas/renesas-drivers$

Is there something I'm missing here?

Cheers,
Prabhakar

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