[PATCH v5 1/2] dt-bindings: phy: Document ST STM32MP25 USB2-FEMTO PHY

[Fabrice Gasnier]

On 9/2/26 16:13, 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
> to discern them.

Hello Marek,

I'm not sure if/how this fit with all below tags. For all the
contributions you've made, you can add my:
Reviewed-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
Tested-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>

BR,
Fabrice

> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at oss.qualcomm.com>
> Signed-off-by: Pankaj Dev <pankaj.dev at st.com>
> Co-developed-by: Rahul Kumar <rahul.kumar05 at st.com>
> Signed-off-by: Rahul Kumar <rahul.kumar05 at st.com>
> Co-developed-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
> Co-developed-by: Clément Le Goffic <clement.legoffic at foss.st.com>
> Signed-off-by: Clément Le Goffic <clement.legoffic at foss.st.com>
> Co-developed-by: Marek Vasut <marex at nabladev.com>
> Signed-off-by: Marek Vasut <marex at nabladev.com>
> ---
> 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: Krzysztof Kozlowski <krzk+dt at kernel.org>
> Cc: Manivannan Sadhasivam <mani 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: Patrice Chotard <patrice.chotard at foss.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: 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
> ---
> V2: - Fix up Sob/Cdb lines
>     - Fix up compatible string in example
>     - Use additionalProperties: false
>     - Expand description:
>     - Use clock-cells = <1> to discern OSC and future PLL clock from the PHY
> V3: - Move clock-cells next to PHY cells
>     - Fix the bindings
>     - Fix up Sob/Cdb lines further
> V4: - Reorder the properties: list, put #...cells at the end, reg after compatible
>     - Split this from series arm64: dts: phy: st: usb: Add STM32MP2 USB support
>       https://lore.kernel.org/all/20260822074816.548662-1-marex@nabladev.com/
> V5: Add RB from Krzysztof
> ---
>  .../bindings/phy/st,stm32-usb2phy.yaml        | 68 +++++++++++++++++++
>  1 file changed, 68 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..c76e94c044e67
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/st,stm32-usb2phy.yaml
> @@ -0,0 +1,68 @@
> +# 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. Both PHYs are the FEMTO-PHY, but their configuration
> +  bits in the system control register are different for each variant.
> +
> +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
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  vdd33-supply:
> +    description: Phandle to regulator providing 3V3 power supply to the USB2 HS PHY
> +
> +  "#clock-cells":
> +    const: 1
> +
> +  "#phy-cells":
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - resets
> +  - vdd33-supply
> +  - "#clock-cells"
> +  - "#phy-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/st,stm32mp25-rcc.h>
> +    #include <dt-bindings/reset/st,stm32mp25-rcc.h>
> +
> +    usb-phy at 2400 {
> +        compatible = "st,stm32mp25-usb2phy1";
> +        reg = <0x2400 0x24>;
> +        #phy-cells = <0>;
> +        #clock-cells = <1>;
> +        clocks = <&rcc CK_KER_USB2PHY1>;
> +        resets = <&rcc USB2PHY1_R>;
> +        vdd33-supply = <&vdd33usb>;
> +    };