From: Joonhoe Kim <26rote@gmail.com>
To: gregkh@linuxfoundation.org, Thinh.Nguyen@synopsys.com,
robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
andersson@kernel.org, konradybcio@kernel.org
Cc: abel.vesa@oss.qualcomm.com, wesley.cheng@oss.qualcomm.com,
krishna.kurapati@oss.qualcomm.com,
konrad.dybcio@oss.qualcomm.com,
dmitry.baryshkov@oss.qualcomm.com, neil.armstrong@linaro.org,
val@packett.cool, balaji.kalkonda@oss.qualcomm.com,
tvlad744@gmail.com, linux-arm-msm@vger.kernel.org,
linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/3] arm64: dts: qcom: kaanapali: Mark the USB controller as a Type-C mode switch
Date: Tue, 3 Nov 2026 22:50:57 +0900 [thread overview]
Message-ID: <20261103135057.1682-4-26rote@gmail.com> (raw)
In-Reply-To: <20261103135057.1682-1-26rote@gmail.com>
When the USB3-DP combo PHY is a mode switch, DisplayPort pin
assignments C and E put it in DP-only mode, where it stops the USB3
PIPE clock. Make the USB controller a mode switch as well, so that it
moves to the UTMI clock first and keeps its USB 2.0 port working.
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Signed-off-by: Joonhoe Kim <26rote@gmail.com>
---
The "mode-switch" property of usb_dp_qmpphy comes with patch 3 of
Balaji Kalkonda's Kaanapali DisplayPort series:
https://lore.kernel.org/all/20261022-kaanapali_dp-v3-0-b5ae8e6083c3@oss.qualcomm.com/
arch/arm64/boot/dts/qcom/kaanapali.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/qcom/kaanapali.dtsi b/arch/arm64/boot/dts/qcom/kaanapali.dtsi
index e48a179d0722..a06d5d867488 100644
--- a/arch/arm64/boot/dts/qcom/kaanapali.dtsi
+++ b/arch/arm64/boot/dts/qcom/kaanapali.dtsi
@@ -3941,6 +3941,7 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
tx-fifo-resize;
dma-coherent;
+ mode-switch;
usb-role-switch;
wakeup-source;
--
2.43.0
prev parent reply other threads:[~2026-11-03 13:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-03 13:50 [PATCH v2 0/3] usb: dwc3: qcom: Keep USB 2.0 working in DisplayPort-only modes Joonhoe Kim
2026-11-03 13:50 ` [PATCH v2 1/3] dt-bindings: usb: qcom,snps-dwc3: Add mode-switch Joonhoe Kim
2026-11-03 13:50 ` [PATCH v2 2/3] usb: dwc3: qcom: Use the UTMI clock as PIPE clock in DisplayPort-only modes Joonhoe Kim
2026-11-03 13:50 ` Joonhoe Kim [this message]
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