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Thu, 12 Nov 2026 03:39:22 -0800 (PST) Received: from DESKTOP-NM9EKIA ([180.67.33.100]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-37520cfdfc6sm28352798eec.17.2026.11.12.03.39.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Nov 2026 03:39:21 -0800 (PST) From: Joonhoe Kim <26rote@gmail.com> To: andersson@kernel.org, konradybcio@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, abel.vesa@oss.qualcomm.com, abelvesa@kernel.org, konrad.dybcio@oss.qualcomm.com, dmitry.baryshkov@oss.qualcomm.com, balaji.kalkonda@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3] arm64: dts: qcom: kaanapali: Add mode-switch to the USB controller Date: Thu, 12 Nov 2026 20:39:21 +0900 Message-ID: <20261112113921.1143-1-26rote@gmail.com> X-Mailer: git-send-email 2.55.0.windows.5 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. Add mode-switch to the USB controller as well, so that it gets the Type-C mode, moves to the UTMI clock first and keeps its USB 2.0 port working. Reviewed-by: Abel Vesa Signed-off-by: Joonhoe Kim <26rote@gmail.com> --- Depends on: - "usb: dwc3: qcom: Keep USB 2.0 working in DisplayPort-only modes", which adds the binding and registers the mux in dwc3-qcom. Without it, pmic_glink_altmode defers its probe indefinitely: https://lore.kernel.org/all/20261112113838.506-1-26rote@gmail.com/ - patch 3 of Balaji Kalkonda's Kaanapali DisplayPort series, which makes usb_dp_qmpphy a mode switch: https://lore.kernel.org/all/20261022-kaanapali_dp-v3-3-b5ae8e6083c3@oss.qualcomm.com/ - with dwc3-qcom built as a module, Yongxing Mou's "drm/bridge: aux-hpd-bridge: replay last HPD status on hpd_enable", or a monitor attached at boot is not detected: https://lore.kernel.org/all/20260803-drm-usbdp-preboot-v1-1-2539b362be00@oss.qualcomm.com/ Changes in v3: - Sent on its own, split from the dwc3 series (Krzysztof) - Subject and message: the controller gets the mode, it does not switch anything - v2: https://lore.kernel.org/all/20261103135057.1682-4-26rote@gmail.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; base-commit: ddfe51b0a0f5dc9e415cc2c8ad8db17532dd426b prerequisite-patch-id: a793fca7329dac964c21459f8d7a8b003d36d84d prerequisite-patch-id: 0f4b3497a5b65f978f8ee3de20953e111d9a4721 prerequisite-patch-id: c6020a82fa07088ac3e07cc89d3059fff044d39e -- 2.43.0