linux-kernel - Re: [PATCH v9 02/22] dt-bindings: mediatek,dp: Add Display Port binding

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Message-ID: <YkHjS9ToXqyliItf@robh.at.kernel.org>
Date:   Mon, 28 Mar 2022 11:33:15 -0500
From:   Rob Herring <robh@...nel.org>
To:     Guillaume Ranquet <granquet@...libre.com>
Cc:     airlied@...ux.ie, angelogioacchino.delregno@...labora.com,
        chunfeng.yun@...iatek.com, chunkuang.hu@...nel.org,
        ck.hu@...iatek.com, daniel@...ll.ch, deller@....de,
        jitao.shi@...iatek.com, kishon@...com, krzk+dt@...nel.org,
        maarten.lankhorst@...ux.intel.com, matthias.bgg@...il.com,
        mripard@...nel.org, p.zabel@...gutronix.de, tzimmermann@...e.de,
        vkoul@...nel.org, devicetree@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-phy@...ts.infradead.org, markyacoub@...gle.com,
        Markus Schneider-Pargmann <msp@...libre.com>
Subject: Re: [PATCH v9 02/22] dt-bindings: mediatek,dp: Add Display Port
 binding

On Mon, Mar 28, 2022 at 12:39:07AM +0200, Guillaume Ranquet wrote:
> From: Markus Schneider-Pargmann <msp@...libre.com>
> 
> This controller is present on several mediatek hardware. Currently
> mt8195 and mt8395 have this controller without a functional difference,
> so only one compatible field is added.
> 
> The controller can have two forms, as a normal display port and as an
> embedded display port.
> 
> Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
> Signed-off-by: Guillaume Ranquet <granquet@...libre.com>
> ---
>  .../display/mediatek/mediatek,dp.yaml         | 100 ++++++++++++++++++
>  1 file changed, 100 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> new file mode 100644
> index 000000000000..802cc406c72b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> @@ -0,0 +1,100 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek Display Port Controller
> +
> +maintainers:
> +  - CK Hu <ck.hu@...iatek.com>
> +  - Jitao shi <jitao.shi@...iatek.com>
> +
> +description: |
> +  Device tree bindings for the Mediatek (embedded) Display Port controller
> +  present on some Mediatek SoCs.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: mediatek,mt8195-dp-tx
> +      - const: syscon

Add something to the above description to convince me this is a syscon. 

If you need a regmap, the driver can create one. 'syscon' is really only 
needed if there's not a specific driver.

Rob