From: Joey Lu <a0987203069@gmail•com>
To: Vinod Koul <vkoul@kernel•org>,
Neil Armstrong <neil.armstrong@linaro•org>
Cc: Rob Herring <robh@kernel•org>,
Krzysztof Kozlowski <krzk+dt@kernel•org>,
Conor Dooley <conor+dt@kernel•org>,
Jacky Huang <ychuang3@nuvoton•com>,
Shan-Chun Hung <schung@nuvoton•com>,
linux-phy@lists•infradead.org, devicetree@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
linux-kernel@vger•kernel.org, Joey Lu <a0987203069@gmail•com>
Subject: [PATCH 0/2] phy: nuvoton: Add MA35D1 USB2 OTG PHY driver
Date: Thu, 4 Jun 2026 18:12:18 +0800 [thread overview]
Message-ID: <20260604101220.1092822-1-a0987203069@gmail.com> (raw)
The Nuvoton MA35D1 SoC has two USB 2.0 ports:
USB0 is an OTG-capable port. Its physical signals are routed by a
hardware mux to either a DWC2 gadget controller or the EHCI0/OHCI0
host controllers, depending on the USB ID pin state. The DWC2 IP is
device-only in hardware, so all host-mode operation on USB0 is
handled by EHCI0/OHCI0.
USB1 is a dedicated host-only port served by EHCI1/OHCI1.
About this driver:
- Runs the PHY Power-On Reset sequence, with a guard that skips
re-initialization if the PHY is already operational.
- Supports optional resistor calibration trim (nuvoton,rcalcode) and
over-current detect polarity configuration (nuvoton,oc-active-high).
- For PHY0 (USB0) only: registers a USB role switch that reads the
hardware ID pin state from PWRONOTP[16] on every query.
Joey Lu (2):
dt-bindings: phy: nuvoton: Add MA35D1 USB2 OTG PHY binding
phy: nuvoton: Add MA35D1 USB2 OTG PHY driver
.../phy/nuvoton,ma35d1-usb2-phy-otg.yaml | 79 ++++++
drivers/phy/nuvoton/Kconfig | 15 +
drivers/phy/nuvoton/Makefile | 1 +
drivers/phy/nuvoton/phy-ma35d1-otg.c | 264 ++++++++++++++++++
4 files changed, 359 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/nuvoton,ma35d1-usb2-phy-otg.yaml
create mode 100644 drivers/phy/nuvoton/phy-ma35d1-otg.c
--
2.43.0
next reply other threads:[~2026-06-04 10:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-04 10:12 Joey Lu [this message]
2026-06-04 10:12 ` [PATCH 1/2] dt-bindings: phy: nuvoton: Add MA35D1 USB2 OTG PHY binding Joey Lu
2026-06-04 10:12 ` [PATCH 2/2] phy: nuvoton: Add MA35D1 USB2 OTG PHY driver Joey Lu
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