From: "Dr. David Alan Gilbert" <dave@treblig.org>
To: jens.glathe@oldschoolsolutions.biz
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Abel Vesa <abelvesa@kernel.org>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH 5/5] arm64: dts: qcom: x1: disable ps883x USB4 capability
Date: Sun, 19 Jul 2026 01:15:58 +0000 [thread overview]
Message-ID: <alwlTry32zTh3KT0@gallifrey> (raw)
In-Reply-To: <20260718-ps883x-disable-usb4-v1-5-cec86d0b909e@oldschoolsolutions.biz>
* Jens Glathe via B4 Relay (devnull+jens.glathe.oldschoolsolutions.biz@kernel.org) wrote:
> From: Jens Glathe <jens.glathe@oldschoolsolutions.biz>
>
> Add the "parade,disable-usb4" property to the PS883x node so that the
> retimer driver treats USB4 as USB3. This allows the combo PHY to remain
> in a DP-capable mode, restoring working DisplayPort output over the
> dock while keeping USB functional.
>
> This is a temporary platform workaround until proper USB4 DP tunneling
> support is available.
>
> Signed-off-by: Jens Glathe <jens.glathe@oldschoolsolutions.biz>
Tested-by: Dr. David Alan Gilbert <dave@treblig.org>
on zenbook a14 with tb cable
> ---
> arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 4 ++++
> arch/arm64/boot/dts/qcom/hamoa-lenovo-ideacentre-mini-01q8x10.dts | 2 ++
> arch/arm64/boot/dts/qcom/purwa-iot-evk.dts | 6 ++++++
> arch/arm64/boot/dts/qcom/x1-asus-vivobook-s15.dtsi | 4 ++++
> arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi | 4 ++++
> arch/arm64/boot/dts/qcom/x1-crd.dtsi | 6 ++++++
> arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi | 4 ++++
> arch/arm64/boot/dts/qcom/x1-hp-omnibook-x14.dtsi | 2 ++
> arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi | 4 ++++
> arch/arm64/boot/dts/qcom/x1e001de-devkit.dts | 6 ++++++
> arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 4 ++++
> arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts | 4 ++++
> arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts | 6 ++++++
> arch/arm64/boot/dts/qcom/x1e80100-medion-sprchrgd-14-s1.dts | 2 ++
> arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi | 4 ++++
> 15 files changed, 62 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
> index 9fa86bb6438ec..5ec77c5912f8e 100644
> --- a/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
> +++ b/arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts
> @@ -762,6 +762,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -877,6 +879,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/hamoa-lenovo-ideacentre-mini-01q8x10.dts b/arch/arm64/boot/dts/qcom/hamoa-lenovo-ideacentre-mini-01q8x10.dts
> index bfb7cea56df96..328a360843f4c 100644
> --- a/arch/arm64/boot/dts/qcom/hamoa-lenovo-ideacentre-mini-01q8x10.dts
> +++ b/arch/arm64/boot/dts/qcom/hamoa-lenovo-ideacentre-mini-01q8x10.dts
> @@ -601,6 +601,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts b/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> index ad503beec1d3d..9ce080b9ae896 100644
> --- a/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> +++ b/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> @@ -703,6 +703,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -760,6 +762,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -865,6 +869,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1-asus-vivobook-s15.dtsi b/arch/arm64/boot/dts/qcom/x1-asus-vivobook-s15.dtsi
> index 48c4ad648354e..d67ded1da5875 100644
> --- a/arch/arm64/boot/dts/qcom/x1-asus-vivobook-s15.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1-asus-vivobook-s15.dtsi
> @@ -678,6 +678,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -798,6 +800,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi b/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi
> index 66d566808f583..e1033d3bef359 100644
> --- a/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1-asus-zenbook-a14.dtsi
> @@ -845,6 +845,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -945,6 +947,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1-crd.dtsi b/arch/arm64/boot/dts/qcom/x1-crd.dtsi
> index 9602d65c8b3db..002a974c88751 100644
> --- a/arch/arm64/boot/dts/qcom/x1-crd.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1-crd.dtsi
> @@ -967,6 +967,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -1024,6 +1026,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -1112,6 +1116,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi b/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi
> index d6de4da02dcd3..fa17cdafc07b4 100644
> --- a/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1-dell-thena.dtsi
> @@ -852,6 +852,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -947,6 +949,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1-hp-omnibook-x14.dtsi b/arch/arm64/boot/dts/qcom/x1-hp-omnibook-x14.dtsi
> index 02708f23a8657..4dd62092b8809 100644
> --- a/arch/arm64/boot/dts/qcom/x1-hp-omnibook-x14.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1-hp-omnibook-x14.dtsi
> @@ -917,6 +917,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi b/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi
> index 7559557610ed4..1aa075d6eeda5 100644
> --- a/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1-microsoft-denali.dtsi
> @@ -759,6 +759,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -822,6 +824,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts b/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts
> index 2e38402e2c140..ada5da526634a 100644
> --- a/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts
> +++ b/arch/arm64/boot/dts/qcom/x1e001de-devkit.dts
> @@ -795,6 +795,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -852,6 +854,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -943,6 +947,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
> index 5d49df41be02a..c8bfb38c64ad5 100644
> --- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
> @@ -895,6 +895,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -1018,6 +1020,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
> index ce7b10ea89b6d..11412099eaec1 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
> +++ b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
> @@ -726,6 +726,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -789,6 +791,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
> index beb1475d7fa0c..d16d3627796b8 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
> +++ b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
> @@ -863,6 +863,8 @@ typec-mux@8 {
> orientation-switch;
> retimer-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -920,6 +922,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -977,6 +981,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-medion-sprchrgd-14-s1.dts b/arch/arm64/boot/dts/qcom/x1e80100-medion-sprchrgd-14-s1.dts
> index f95b1f9f439d3..55f9df8e5f403 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100-medion-sprchrgd-14-s1.dts
> +++ b/arch/arm64/boot/dts/qcom/x1e80100-medion-sprchrgd-14-s1.dts
> @@ -857,6 +857,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
> index 28342cb84ded7..4ccfbe7e14eb8 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
> @@ -902,6 +902,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -984,6 +986,8 @@ typec-mux@8 {
> retimer-switch;
> orientation-switch;
>
> + parade,disable-usb4;
> +
> ports {
> #address-cells = <1>;
> #size-cells = <0>;
>
> --
> 2.53.0
>
>
--
-----Open up your eyes, open up your mind, open up your code -------
/ Dr. David Alan Gilbert | Running GNU/Linux | Happy \
\ dave @ treblig.org | | In Hex /
\ _________________________|_____ http://www.treblig.org |_______/
prev parent reply other threads:[~2026-07-19 1:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-18 17:06 [PATCH 0/5] usb: typec: ps883x: fixes for older Thunderbolt 4 / USB4 docks Jens Glathe via B4 Relay
2026-07-18 17:06 ` [PATCH 1/5] dt-bindings: usb: parade,ps8830: Add parade,disable-usb4 property Jens Glathe via B4 Relay
2026-07-18 17:11 ` sashiko-bot
2026-07-18 17:06 ` [PATCH 2/5] usb: typec: ps883x: Return -EOPNOTSUPP for USB4 when parade,disable-usb4 is set Jens Glathe via B4 Relay
2026-07-18 17:14 ` sashiko-bot
2026-07-19 1:14 ` Dr. David Alan Gilbert
2026-07-18 17:06 ` [PATCH 3/5] usb: typec: mux: ps883x: refactor DP altmode handling and support TYPEC_DP_STATE_F Jens Glathe via B4 Relay
2026-07-18 17:29 ` sashiko-bot
2026-07-18 17:06 ` [PATCH 4/5] usb: typec: mux: ps883x: add a delay after writing config regs Jens Glathe via B4 Relay
2026-07-18 17:06 ` [PATCH 5/5] arm64: dts: qcom: x1: disable ps883x USB4 capability Jens Glathe via B4 Relay
2026-07-18 17:22 ` sashiko-bot
2026-07-19 1:15 ` Dr. David Alan Gilbert [this message]
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