[PATCH 1/8] dt-bindings: phy: Document ST STM32MP25 USB2-FEMTO PHY

[Krzysztof Kozlowski]

On Wed, Aug 12, 2026 at 02:55:41AM +0200, Marek Vasut wrote:
> From: Pankaj Dev <pankaj.dev at st.com>
> 
> Document USB2 PHY for STM32MP25 USB2 controllers, which includes the
> USB2.0 host-only controller and USB 2.0 part of the DWC3 controller.
> Two such PHYs in total are present in STM32MP25 SoC, they both are
> slightly different, therefore they use different compatible string

What is slightly different? This should be either here, or better, in
"description" part.

> to discern them.
> 
> Signed-off-by: Clément Le Goffic <clement.legoffic at foss.st.com>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
> Signed-off-by: Marek Vasut <marex at nabladev.com>
> Signed-off-by: Pankaj Dev <pankaj.dev at st.com>
> Signed-off-by: Rahul Kumar <rahul.kumar05 at st.com>

Incomplete/incorrect DCO chain. Who sends it? Rahul?


> ---
> Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
> Cc: Christian Bruel <christian.bruel at foss.st.com>
> Cc: Conor Dooley <conor+dt at kernel.org>
> Cc: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
> Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
> Cc: Neil Armstrong <neil.armstrong at linaro.org>
> Cc: Pankaj Dev <pankaj.dev at st.com>
> Cc: Rahul Kumar <rahul.kumar05 at st.com>
> Cc: Rob Herring <robh at kernel.org>
> Cc: Rosen Penev <rosenp at gmail.com>
> Cc: Thinh Nguyen <Thinh.Nguyen at synopsys.com>
> Cc: Vinod Koul <vkoul at kernel.org>
> Cc: devicetree at vger.kernel.org
> Cc: kernel at dh-electronics.com
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-kernel at vger.kernel.org
> Cc: linux-phy at lists.infradead.org
> Cc: linux-stm32 at st-md-mailman.stormreply.com
> Cc: linux-usb at vger.kernel.org
> ---
>  .../bindings/phy/st,stm32-usb2phy.yaml        | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/st,stm32-usb2phy.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/st,stm32-usb2phy.yaml b/Documentation/devicetree/bindings/phy/st,stm32-usb2phy.yaml
> new file mode 100644
> index 0000000000000..ca9fc3b87383c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/st,stm32-usb2phy.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/st,stm32-usb2phy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: STMicroelectronics STM32 MPU High-Speed USB PHY
> +
> +description:
> +  USB2 PHY block in STM32 is attached to USB 2.0 Host controller and
> +  USB 2.0 side of DWC3 DRD controller, and provides the USB LS/FS/HS
> +  connectivity.
> +
> +maintainers:
> +  - Fabrice Gasnier <fabrice.gasnier at foss.st.com>
> +  - Marek Vasut <marex at nabladev.com>
> +  - Pankaj Dev <pankaj.dev at st.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - st,stm32mp25-usb2phy1
> +      - st,stm32mp25-usb2phy2
> +
> +  "#phy-cells":
> +    const: 0
> +
> +  clocks:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  vdd33-supply:
> +    description: Phandle to regulator providing 3V3 power supply to the USB2 HS PHY
> +
> +  st,syscfg:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    description: Phandle to system configuration controller.
> +    items:
> +      - items:
> +          - description: phandle to syscfg
> +          - description: USB2PHY control offset within syscfg
> +
> +  "#clock-cells":
> +    const: 0
> +
> +required:
> +  - compatible
> +  - "#clock-cells"
> +  - "#phy-cells"
> +  - clocks
> +  - resets
> +  - st,syscfg
> +  - vdd33-supply
> +
> +unevaluatedProperties: false

additionalProperties.

Best regards,
Krzysztof