linux-kernel - Re: [PATCH v4 1/3] dt-bindings: net: can: renesas,rcar-canfd: Document RZ/G2L SoC

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Message-ID: <CA+V-a8uDPn83W6wi2Jq8VFrBeGSVMPMiFmXGV2z=L8xxZteFNQ@mail.gmail.com>
Date:   Mon, 9 Aug 2021 16:48:20 +0100
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Marc Kleine-Budde <mkl@...gutronix.de>
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Herring <robh+dt@...nel.org>,
        Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-can@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH v4 1/3] dt-bindings: net: can: renesas,rcar-canfd:
 Document RZ/G2L SoC

Hi Marc,

On Mon, Aug 9, 2021 at 2:26 PM Marc Kleine-Budde <mkl@...gutronix.de> wrote:
>
> On 27.07.2021 14:30:20, Lad Prabhakar wrote:
> > Add CANFD binding documentation for Renesas RZ/G2L SoC.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
> > Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > ---
> >  .../bindings/net/can/renesas,rcar-canfd.yaml  | 69 +++++++++++++++++--
> >  1 file changed, 63 insertions(+), 6 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
> > index 0b33ba9ccb47..546c6e6d2fb0 100644
> > --- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
> > +++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
> > @@ -30,13 +30,15 @@ properties:
> >                - renesas,r8a77995-canfd     # R-Car D3
> >            - const: renesas,rcar-gen3-canfd # R-Car Gen3 and RZ/G2
> >
> > +      - items:
> > +          - enum:
> > +              - renesas,r9a07g044-canfd    # RZ/G2{L,LC}
> > +          - const: renesas,rzg2l-canfd     # RZ/G2L family
> > +
> >    reg:
> >      maxItems: 1
> >
> > -  interrupts:
> > -    items:
> > -      - description: Channel interrupt
> > -      - description: Global interrupt
> > +  interrupts: true
> >
> >    clocks:
> >      maxItems: 3
> > @@ -50,8 +52,7 @@ properties:
> >    power-domains:
> >      maxItems: 1
> >
> > -  resets:
> > -    maxItems: 1
> > +  resets: true
> >
> >    renesas,no-can-fd:
> >      $ref: /schemas/types.yaml#/definitions/flag
> > @@ -91,6 +92,62 @@ required:
> >    - channel0
> >    - channel1
> >
> > +if:
> > +  properties:
> > +    compatible:
> > +      contains:
> > +        enum:
> > +          - renesas,rzg2l-canfd
> > +then:
> > +  properties:
> > +    interrupts:
> > +      items:
> > +        - description: CAN global error interrupt
> > +        - description: CAN receive FIFO interrupt
> > +        - description: CAN0 error interrupt
> > +        - description: CAN0 transmit interrupt
> > +        - description: CAN0 transmit/receive FIFO receive completion interrupt
> > +        - description: CAN1 error interrupt
> > +        - description: CAN1 transmit interrupt
> > +        - description: CAN1 transmit/receive FIFO receive completion interrupt
> > +
> > +    interrupt-names:
> > +      items:
> > +        - const: g_err
> > +        - const: g_recc
> > +        - const: ch0_err
> > +        - const: ch0_rec
> > +        - const: ch0_trx
> > +        - const: ch1_err
> > +        - const: ch1_rec
> > +        - const: ch1_trx
> > +
> > +    resets:
> > +      maxItems: 2
> > +
> > +    reset-names:
> > +      items:
> > +        - const: rstp_n
> > +        - const: rstc_n
> > +
> > +  required:
> > +    - interrupt-names
> > +    - reset-names
> > +else:
> > +  properties:
> > +    interrupts:
> > +      items:
> > +        - description: Channel interrupt
> > +        - description: Global interrupt
> > +
> > +    interrupt-names:
> > +      items:
> > +        - const: ch_int
> > +        - const: g_int
>
> Are you adding the new interrupt-names to the existing DTs, too?
> Otherwise this patch will generate more warnings in the existing DTs.
>
For non RZ/G2L family interrupt-names property is not marked as
required property so dtbs_check won't complain. Once we have added
interrupt names in all the SoC DTSI's we will mark it as required
property for the rest of the SoC's.

Cheers,
Prabhakar

> regards,
> Marc
>
> --
> Pengutronix e.K.                 | Marc Kleine-Budde           |
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