linux-kernel - Re: [PATCH RFC v7 5/6] dt-bindings: display: add Unisoc's mipi dsi&dphy bindings

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Date:   Mon, 28 Sep 2020 10:20:29 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Kevin Tang <kevin3.tang@...il.com>
Cc:     maarten.lankhorst@...ux.intel.com, sean@...rly.run,
        airlied@...ux.ie, daniel@...ll.ch, robh+dt@...nel.org,
        mark.rutland@....com, orsonzhai@...il.com, zhang.lyra@...il.com,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH RFC v7 5/6] dt-bindings: display: add Unisoc's mipi
 dsi&dphy bindings

Hi!

On Mon, Sep 28, 2020 at 02:27:39PM +0800, Kevin Tang wrote:
> From: Kevin Tang <kevin.tang@...soc.com>
> 
> Adds MIPI DSI Master and MIPI DSI-PHY (D-PHY)
> support for Unisoc's display subsystem.
> 
> RFC v7:
>   - Fix DTC unit name warnings
>   - Fix the problem of maintainers
> 
> Cc: Orson Zhai <orsonzhai@...il.com>
> Cc: Chunyan Zhang <zhang.lyra@...il.com>
> Signed-off-by: Kevin Tang <kevin.tang@...soc.com>
> ---
>  .../display/sprd/sprd,sharkl3-dsi-host.yaml        | 98 ++++++++++++++++++++++
>  .../display/sprd/sprd,sharkl3-dsi-phy.yaml         | 75 +++++++++++++++++
>  2 files changed, 173 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-phy.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml
> new file mode 100644
> index 0000000..b6bbf67
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml
> @@ -0,0 +1,98 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/sprd/sprd,sharkl3-dsi-host.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Unisoc MIPI DSI Controller
> +
> +maintainers:
> +  - Kevin Tang <kevin.tang@...soc.com>
> +
> +properties:
> +  compatible:
> +    const: sprd,sharkl3-dsi-host
> +
> +  reg:
> +    maxItems: 1
> +    description:
> +      Physical base address and length of the registers set for the device.
> +
> +  interrupts:
> +    maxItems: 2
> +    description:
> +      Should contain DSI interrupt.
> +
> +  clocks:
> +    minItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: clk_src_96m
> +
> +  power-domains:
> +    maxItems: 1
> +    description: A phandle to DSIM power domain node
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +  port@0:
> +    type: object
> +    description:
> +      A port node with endpoint definitions as defined in
> +      Documentation/devicetree/bindings/media/video-interfaces.txt.
> +      That port should be the input endpoint, usually coming from
> +      the associated DPU.
> +  port@1:
> +    type: object
> +    description:
> +      A port node with endpoint definitions as defined in
> +      Documentation/devicetree/bindings/media/video-interfaces.txt.
> +      That port should be the output endpoint, usually output to
> +      the associated DPHY.

Is there a specific reason you don't follow the OF-graph and have a
ports subnode with your two port@X in there?

Maxime

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