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 18:28:08 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Rob Herring <robh@...nel.org>
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 15/09/2020 17:41, Rob Herring wrote:
> 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'.

OK,

Thanks.

Neil


> 
> Rob
>