linux-kernel - Re: [PATCH 2/6] dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings

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Date:   Tue, 15 Sep 2020 09:41:19 -0600
From:   Rob Herring <robh@...nel.org>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     daniel@...ll.ch, devicetree@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] dt-bindings: display: add Amlogic MIPI DSI Host
 Controller bindings

On Mon, Sep 07, 2020 at 10:18:21AM +0200, Neil Armstrong wrote:
> The Amlogic AXg SoCs embeds a Synopsys DW-MIPI-DSI transceiver (ver 1.21a), with a custom
> glue managing the IP resets, clock and data input similar to the DW-HDMI Glue on other
> Amlogic SoCs.
> 
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
>  .../display/amlogic,meson-dw-mipi-dsi.yaml    | 115 ++++++++++++++++++
>  1 file changed, 115 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml b/Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
> new file mode 100644
> index 000000000000..6177f45ea1a6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/amlogic,meson-dw-mipi-dsi.yaml
> @@ -0,0 +1,115 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2020 BayLibre, SAS
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/display/amlogic,meson-dw-mipi-dsi.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Amlogic specific extensions to the Synopsys Designware MIPI DSI Host Controller
> +
> +maintainers:
> +  - Neil Armstrong <narmstrong@...libre.com>
> +
> +description: |
> +  The Amlogic Meson Synopsys Designware Integration is composed of
> +  - A Synopsys DesignWare MIPI DSI Host Controller IP
> +  - A TOP control block controlling the Clocks & Resets of the IP
> +
> +allOf:
> +  - $ref: dsi-controller.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - amlogic,meson-axg-dw-mipi-dsi
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    minItems: 2
> +
> +  clock-names:
> +    minItems: 2
> +    items:
> +      - const: pclk
> +      - const: px_clk
> +      - const: meas_clk
> +
> +  resets:
> +    minItems: 1
> +
> +  reset-names:
> +    items:
> +      - const: top
> +
> +  phys:
> +    minItems: 1
> +
> +  phy-names:
> +    items:
> +      - const: dphy
> +
> +  ports:
> +    type: object
> +
> +    properties:
> +      port@0:
> +        type: object
> +        description: Input node to receive pixel data.
> +      port@1:
> +        type: object
> +        description: DSI output node to panel.
> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - resets
> +  - reset-names
> +  - phys
> +  - phy-names
> +  - ports
> +
> +additionalProperties: false

Presumably you may have panel/bridge child nodes, so this needs to be 
'unevaluatedProperties: false'.

Rob