linux-hardening - Re: [PATCH 3/6] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Remove extcon

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Message-ID: <2853a139-8ee5-49ed-8c38-4951a8b03ed7@oss.qualcomm.com>
Date: Tue, 13 Jan 2026 09:59:59 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Barnabás Czémán <barnabas.czeman@...nlining.org>,
        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>,
        Gabriel Gonzales <semfault@...root.org>, Kees Cook <kees@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>,
        Biswapriyo Nath <nathbappai@...il.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        linux@...nlining.org
Subject: Re: [PATCH 3/6] arm64: dts: qcom: sm6125-xiaomi-ginkgo: Remove extcon

On 1/12/26 9:13 PM, Barnabás Czémán wrote:
> GPIO pin 102 is related to DisplayPort what is not supported
> by this device and it is also disabled at downstream,
> remove the unnecessary extcon-usb node.
> 
> Fixes: 9b1a6c925c88 ("arm64: dts: qcom: sm6125: Initial support for xiaomi-ginkgo")
> Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
> ---
>  arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo.dts | 9 ---------
>  1 file changed, 9 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo.dts b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo.dts
> index 4c548cb5f253..666daf4a9fdd 100644
> --- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo.dts
> +++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-ginkgo.dts
> @@ -80,11 +80,6 @@ ramoops@...00000 {
>  		};
>  	};
>  
> -	extcon_usb: extcon-usb {
> -		compatible = "linux,extcon-usb-gpio";
> -		id-gpios = <&tlmm 102 GPIO_ACTIVE_HIGH>;
> -	};

FWIW

trinket-sde.dtsi (downstream for this SoC):

	qcom,usbplug-cc-gpio = <&tlmm 102 0>;

trinket-pinctrl.dtsi:
	sde_dp_usbplug_cc_active: sde_dp_usbplug_cc_active {
                        mux {
                                pins = "gpio102";
                                function = "gpio"; <---
                        };

                        config {
                                pins = "gpio102";
                                bias-disable;
                                drive-strength = <16>;
                        };
                };
reading the blurb in downstream's gpu/drm/msm/dp/dp_parser.c this
seems to be the select pin of a GPIO Type-C mux?

Konrad