linux-kernel - Re: [PATCH DNM v2 5/5] arm64: dts: qcom: qcs6490-radxa-dragon-q6a: Enable USB 3.0 and HDMI ports

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Message-ID: <b3c169b5-607c-40ae-9ca1-0977b6f526c2@oss.qualcomm.com>
Date: Mon, 15 Sep 2025 09:27:17 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Xilin Wu <sophon@...xa.com>, Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Viken Dadhaniya <viken.dadhaniya@....qualcomm.com>,
        Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
Subject: Re: [PATCH DNM v2 5/5] arm64: dts: qcom: qcs6490-radxa-dragon-q6a:
 Enable USB 3.0 and HDMI ports

On 9/14/25 5:57 PM, Xilin Wu wrote:
> This board doesn't feature a regular Type-C port. The usb_1_qmpphy's
> RX1/TX1 pair is statically connected to the USB-A port, while its RX0/TX0
> pair is connected to the RA620 DP-to-HDMI bridge.
> 
> Add and enable the nodes for the features to work.
> 
> Signed-off-by: Xilin Wu <sophon@...xa.com>
> 
> ---
> 
> This change depends on the following patch series:
> https://lore.kernel.org/all/20250908-topic-x1e80100-hdmi-v3-4-c53b0f2bc2fb@linaro.org/
> ---
>  .../boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts     | 152 +++++++++++++++++++++
>  1 file changed, 152 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts b/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
> index 3bf85d68c97891db1f1f0b84fb5649803948e06f..12bc9a0fcfbfeaabf6ede351f96c61193a8261c0 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
> @@ -78,6 +78,71 @@ chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	usb3_con: connector {
> +		compatible = "usb-a-connector";

Looking at https://docs.radxa.com/en/dragon/q6a, I see two of these.

I suppose there's a (dumb) hub inbetween - check sdm850-lenovo-yoga-c630
for reference if that's the case

Konrad