linux-kernel - Re: [PATCH 1/5] dt-bindings: connector: Add displayport connector for hotplug notify

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Message-ID: <r7b4y74lr5qwejkejquosaar75mthjvjfy4pp6bbl4pgte6cq4@n3gwjolsaw2j>
Date: Tue, 15 Jul 2025 15:04:06 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Chaoyi Chen <kernel@...kyi.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>, Sandy Huang <hjc@...k-chips.com>,
        Andy Yan <andy.yan@...k-chips.com>,
        Yubing Zhang <yubing.zhang@...k-chips.com>,
        Frank Wang <frank.wang@...k-chips.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Amit Sunil Dhamne <amitsd@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Chaoyi Chen <chaoyi.chen@...k-chips.com>,
        Dragan Simic <dsimic@...jaro.org>, Johan Jonker <jbx6244@...il.com>,
        Diederik de Haas <didi.debian@...ow.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 1/5] dt-bindings: connector: Add displayport connector
 for hotplug notify

On Tue, Jul 15, 2025 at 07:24:52PM +0800, Chaoyi Chen wrote:
> From: Chaoyi Chen <chaoyi.chen@...k-chips.com>
> 
> The USB Type-C DisplayPort alternate mode driver will find
> "displayport" property for DRM hotplug event notify[0].
> 
> [0]: https://lore.kernel.org/all/20210817215201.795062-9-hdegoede@redhat.com/
> 
> Signed-off-by: Chaoyi Chen <chaoyi.chen@...k-chips.com>
> ---
>  .../devicetree/bindings/connector/usb-connector.yaml          | 4 ++++
>  1 file changed, 4 insertions(+)
> 

Please see how it was done on other platforms. For example, qualcomm
(both tcpm and pmic-glink) use port / endpoint to link to the DP PHY /
DP controller.

-- 
With best wishes
Dmitry