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[87.133.178.36]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-47a9e4d6da9sm27491387f8f.12.2026.07.06.15.36.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jul 2026 15:36:37 -0700 (PDT) From: Andreas Zdziarstek To: Vinod Koul , Neil Armstrong Cc: Heiko Stuebner , Jonas Karlman , Frank Wang , Louis Chauvet , Luca Ceresoli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-phy@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Andreas Zdziarstek Subject: [RFC PATCH v1 2/2] arm64: dts: rockchip: fix gadget hot-plug on ODROID-M1S micro-USB Date: Tue, 7 Jul 2026 00:36:27 +0200 Message-ID: <20260706223627.113814-3-andreas.zdziarstek@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260706223627.113814-1-andreas.zdziarstek@gmail.com> References: <20260706223627.113814-1-andreas.zdziarstek@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Referencing the vcc5v0_usb2_otg switch as phy-supply of the OTG port makes the phy core enable it as soon as the USB controller powers the PHY, so the board permanently drives its own 5 V onto the micro-USB connector's VBUS pin. That blinds the PHY's session detection: VBUSDET (fed from connector VBUS through the on-board 10k/15k divider) is always high, no bvalid edge can ever occur on plug or unplug, and the OTG state machine never wakes from its initial state. A USB gadget only enumerates if the cable is already attached at power-on. It also back-drives 5 V against the host port. The inno-usb2 driver has no role-managed VBUS supply support, and the practical use of this port is as the board's USB device/download port. Separate Type-A ports are available for host functions. Drop the phy-supply so the port never sources VBUS and pin the controller to dr_mode="peripheral" to match that. Fixes: 10dc64fe0f98 ("arm64: dts: rockchip: Add Hardkernel ODROID-M1S") Signed-off-by: Andreas Zdziarstek --- arch/arm64/boot/dts/rockchip/rk3566-odroid-m1s.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3566-odroid-m1s.dts b/arch/arm64/boot/dts/rockchip/rk3566-odroid-m1s.dts index 33bc5249d729..d9d4a31373a0 100644 --- a/arch/arm64/boot/dts/rockchip/rk3566-odroid-m1s.dts +++ b/arch/arm64/boot/dts/rockchip/rk3566-odroid-m1s.dts @@ -602,6 +602,7 @@ &usb_host0_ohci { }; &usb_host0_xhci { + dr_mode = "peripheral"; status = "okay"; }; @@ -627,7 +628,6 @@ &usb2phy0_host { }; &usb2phy0_otg { - phy-supply = <&vcc5v0_usb2_otg>; status = "okay"; }; -- 2.53.0