linux-kernel - Re: [PATCH] dt-bindings: soc: imx: add binding doc for aips bus

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Date:   Tue, 21 Jan 2020 17:21:27 -0600
From:   Rob Herring <robh@...nel.org>
To:     Peng Fan <peng.fan@....com>
Cc:     "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: soc: imx: add binding doc for aips bus

On Thu, Jan 16, 2020 at 06:12:12AM +0000, Peng Fan wrote:
> From: Peng Fan <peng.fan@....com>
> 
> Add binding doc for fsl,aips-bus
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  .../devicetree/bindings/soc/imx/fsl,aips-bus.yaml  | 38 ++++++++++++++++++++++
>  1 file changed, 38 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml b/Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml
> new file mode 100644
> index 000000000000..73ce1b7fc306
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/imx/fsl,aips-bus.yaml
> @@ -0,0 +1,38 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/imx/fsl,aips-bus.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: i.MX AHB to IP Bridge
> +
> +maintainers:
> +  - Peng Fan <peng.fan@....com>
> +
> +description: |
> +  This particular peripheral is designed as the bridge between
> +  AHB bus and peripherals with the lower bandwidth IP Slave (IPS)
> +  buses.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: fsl,aips-bus
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    bus@...00000 {
> +      compatible = "fsl,aips-bus", "simple-bus";

'make dt_binding_check' should be failing for you because this doesn't 
match the schema. You need to add 'simple-bus'. However doing so will 
make this schema match on any node with 'simple-bus'. See 'select' in 
various arm,primecell schemas for how to avoid this problem.

Rob

> +      reg = <0x30000000 0x400000>;
> +      #address-cells = <1>;
> +      #size-cells = <1>;
> +      ranges;
> +    };
> +...
> -- 
> 2.16.4
>