linux-kernel - Re: [PATCH v1 1/2] dt-bindings: Add bindings for BrcmSTB SCMI mailbox driver

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Message-ID: <20200918172213.GA3813066@bogus>
Date:   Fri, 18 Sep 2020 11:22:13 -0600
From:   Rob Herring <robh@...nel.org>
To:     Jim Quinlan <james.quinlan@...adcom.com>
Cc:     bcm-kernel-feedback-list@...adcom.com,
        Florian Fainelli <f.fainelli@...il.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 1/2] dt-bindings: Add bindings for BrcmSTB SCMI
 mailbox driver

On Tue, Sep 15, 2020 at 03:31:04PM -0400, Jim Quinlan wrote:
> Bindings are added.  Only one interrupt is needed because
> we do not yet employ the SCMI p2a channel.
> 
> Signed-off-by: Jim Quinlan <james.quinlan@...adcom.com>
> ---
>  .../bindings/mailbox/brcm,brcmstb-mbox.yaml   | 39 +++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mailbox/brcm,brcmstb-mbox.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/brcm,brcmstb-mbox.yaml b/Documentation/devicetree/bindings/mailbox/brcm,brcmstb-mbox.yaml
> new file mode 100644
> index 000000000000..c2359f3a2b13
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mailbox/brcm,brcmstb-mbox.yaml
> @@ -0,0 +1,39 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +$id: http://devicetree.org/schemas/mailbox/brcm,brcmstb-mbox.yaml#
> +
> +title: Broadcom STB SCMI mailbox driver bindings

I thought SCMI was a mailbox consumer, not provider?

> +
> +maintainers:
> +  - Jim Quinlan <james.quinlan@...adcom.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - brcm,brcmstb-mbox
> +
> +  interrupts:
> +    items:
> +      - description: SCMI a2p return interrupt
> +
> +  "#mbox-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - interrupts
> +  - "#mbox-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    mailbox0: mailbox@0 {

Drop the label and unit-address.

Run 'make dt_binding_check' as it will tell you the latter.

> +      compatible = "brcm,brcmstb-mailbox";
> +      #mbox-cells = <1>;
> +      interrupts = <GIC_SPI 0xc6 IRQ_TYPE_LEVEL_HIGH>;
> +    };
> +...
> -- 
> 2.17.1
>