linux-kernel - Re: [PATCH v3 3/6] dt-bindings: remoteproc: Add common TI SCI rproc bindings

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Date:   Mon, 13 Jul 2020 12:28:34 -0600
From:   Rob Herring <robh@...nel.org>
To:     Suman Anna <s-anna@...com>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Lokesh Vutla <lokeshvutla@...com>,
        Grzegorz Jaszczyk <grzegorz.jaszczyk@...aro.org>,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/6] dt-bindings: remoteproc: Add common TI SCI rproc
 bindings

On Fri, Jun 12, 2020 at 05:49:11PM -0500, Suman Anna wrote:
> Add a bindings document that lists the common TI SCI properties
> used by the K3 R5F and DSP remoteproc devices.
> 
> Signed-off-by: Suman Anna <s-anna@...com>
> ---
> v3: New Patch refactoring out the common ti-sci-proc properties
> 
>  .../bindings/remoteproc/ti,k3-sci-proc.yaml   | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml
> new file mode 100644
> index 000000000000..883b6e9b5282
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-sci-proc.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/remoteproc/ti,k3-sci-proc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Common TI K3 remote processor device bindings
> +
> +maintainers:
> +  - Suman Anna <s-anna@...com>
> +
> +description: |
> +  The TI K3 family of SoCs usually have one or more remote processor sub-systems
> +  like the dual-core R5F sub-system or a C66x or C71x DSP processor subsystem.
> +  The device management of these remote processors is managed by a dedicated
> +  System Processor, and the communication with that processor is managed through
> +  the TI-SCI protocol.
> +
> +  Each remote processor device node should define a common set of properties
> +  that allows the System Processor firmware to perform the device management
> +  such as powering the IPs, asserting/deasserting the resets for each of these
> +  processors.
> +
> +properties:
> +  ti,sci:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Should be a phandle to the TI-SCI System Controller node
> +
> +  ti,sci-dev-id:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      Should contain the TI-SCI device id corresponding to the remote processor
> +      core. Please refer to the corresponding System Controller documentation
> +      for valid values.
> +
> +  ti,sci-proc-ids:
> +    description: Should contain a single tuple of <proc_id host_id>.
> +    allOf:

You can drop allOf now.

> +      - $ref: /schemas/types.yaml#/definitions/uint32-array
> +      - maxItems: 1
> +        items:

You don't need 'maxItems' or 1st 'items' here.

> +          items:
> +            - description: TI-SCI processor id for the remote processor device
> +            - description: TI-SCI host id to which processor control
> +                           ownership should be transferred to
> +
> +required:
> +  - ti,sci
> +  - ti,sci-dev-id
> +  - ti,sci-proc-ids
> -- 
> 2.26.0
>