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[60.250.196.139]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2dd2cfc2d3bsm41355145ad.48.2026.09.13.20.19.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Sep 2026 20:19:05 -0700 (PDT) From: Joey Lu To: Vinod Koul , Neil Armstrong Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Arnd Bergmann , Catalin Marinas , Jacky Huang , Shan-Chun Hung , Hui-Ping Chen , Joey Lu , linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Lu Subject: [PATCH v5 0/3] phy: nuvoton: extend MA35D1 USB2 PHY driver for dual-port OTG support Date: Mon, 14 Sep 2026 11:18:56 +0800 Message-ID: <20260914031859.385224-1-a0987203069@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The MA35D1 SoC has two USB PHY ports managed by a shared hardware block: - PHY0 (USB0): OTG port shared between the DWC2 gadget controller and the EHCI0/OHCI0 host controllers. A hardware mux automatically routes USB0 signals to the correct controller based on the USB ID pin state. - PHY1 (USB1): dedicated host-only port for EHCI1/OHCI1. This series extends the existing phy-ma35d1-usb2.c driver and its binding to cover both ports and add OTG role-switch support, while keeping full backward compatibility with existing device trees. Changes since v4: - dts: move the usb_phy node out of /soc to the top level (placed between timer and soc), since usb_phy has no / and doesn't belong under /soc's simple-bus, which triggered DT validation warnings. No other changes. Changes since v3: - dt-bindings: add nuvoton,rcalcode = <7 7> example to illustrate the optional resistor calibration property; revert redundant clock example change (back to USBD_GATE as in the original binding). - driver: handle -ENODEV from usb_role_switch_register() gracefully so that probe succeeds when CONFIG_USB_ROLE_SWITCH is not enabled. Joey Lu (3): dt-bindings: phy: nuvoton,ma35d1-usb2-phy: extend for dual-port and OTG arm64: dts: nuvoton: ma35d1: add USB controllers and dual-port PHY node phy: nuvoton: phy-ma35d1-usb2: extend to dual-port with OTG support .../bindings/phy/nuvoton,ma35d1-usb2-phy.yaml | 44 ++- .../boot/dts/nuvoton/ma35d1-iot-512m.dts | 36 +++ .../boot/dts/nuvoton/ma35d1-som-256m.dts | 36 +++ arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 65 ++++ drivers/phy/nuvoton/phy-ma35d1-usb2.c | 284 +++++++++++++----- 5 files changed, 389 insertions(+), 76 deletions(-) base-commit: cee9395acd8043be0644b25c34bfa86623f2b935 -- 2.43.0