linux-kernel - Re: [PATCH RFC v7 1/6] dt-bindings: display: add Unisoc's drm master bindings

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Date:   Mon, 28 Sep 2020 10:17:26 +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 1/6] dt-bindings: display: add Unisoc's drm master
 bindings

Hi!

On Mon, Sep 28, 2020 at 02:27:35PM +0800, Kevin Tang wrote:
> From: Kevin Tang <kevin.tang@...soc.com>
> 
> The Unisoc DRM master device is a virtual device needed to list all
> DPU devices or other display interface nodes that comprise the
> graphics 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,display-subsystem.yaml       | 39 ++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
> new file mode 100644
> index 0000000..9487a39
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
> @@ -0,0 +1,39 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/sprd/sprd,display-subsystem.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Unisoc DRM master device
> +
> +maintainers:
> +  - Kevin Tang <kevin.tang@...soc.com>
> +
> +description: |
> +  The Unisoc DRM master device is a virtual device needed to list all
> +  DPU devices or other display interface nodes that comprise the
> +  graphics subsystem.
> +
> +properties:
> +  compatible:
> +    const: sprd,display-subsystem
> +
> +  ports:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    description:
> +      Should contain a list of phandles pointing to display interface port
> +      of DPU devices.

Generally speaking, driver-specific properties should be prefixed by the
vendor name to avoid any conflict with generic properties (like the
OF-Graph ports subnode in this case)

Maxime

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