linux-kernel - Re: [PATCH v3 02/10] dt-bindings: phy: samsung,usb3-drd-phy: add exynos2200 support

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Message-ID: <20250325151611.GA2057949-robh@kernel.org>
Date: Tue, 25 Mar 2025 10:16:11 -0500
From: Rob Herring <robh@...nel.org>
To: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
Cc: Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Abel Vesa <abel.vesa@...aro.org>, linux-arm-msm@...r.kernel.org,
	linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 02/10] dt-bindings: phy: samsung,usb3-drd-phy: add
 exynos2200 support

On Fri, Mar 21, 2025 at 03:58:46PM +0200, Ivaylo Ivanov wrote:
> Document support for Exynos2200. As the USBDRD 3.2 4nm controller
> consists of Synopsys eUSB2.0 phy and USBDP/SS combophy, which will
> be handled by external drivers, define only the bus clocked used
> by the link controller.
> 
> Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
> ---
>  .../bindings/phy/samsung,usb3-drd-phy.yaml    | 38 +++++++++++++++++--
>  1 file changed, 34 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
> index 16321cdd4..819e4afe6 100644
> --- a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
> @@ -26,6 +26,7 @@ properties:
>    compatible:
>      enum:
>        - google,gs101-usb31drd-phy
> +      - samsung,exynos2200-usb32drd-phy
>        - samsung,exynos5250-usbdrd-phy
>        - samsung,exynos5420-usbdrd-phy
>        - samsung,exynos5433-usbdrd-phy
> @@ -33,24 +34,32 @@ properties:
>        - samsung,exynos850-usbdrd-phy
>  
>    clocks:
> -    minItems: 2
> +    minItems: 1
>      maxItems: 5
>  
>    clock-names:
> -    minItems: 2
> +    minItems: 1
>      maxItems: 5
>      description: |
> -      At least two clocks::
> +      Typically two clocks::

Don't need double colon.

>          - Main PHY clock (same as USB DRD controller i.e. DWC3 IP clock), used
>            for register access.
>          - PHY reference clock (usually crystal clock), used for PHY operations,
>            associated by phy name. It is used to determine bit values for clock
>            settings register.  For Exynos5420 this is given as 'sclk_usbphy30'
> -          in the CMU.
> +          in the CMU. It's not needed for Exynos2200.
>  
>    "#phy-cells":
>      const: 1
>  
> +  phys:
> +    maxItems: 1
> +    description:
> +      Phandle to USBDRD-underlying high-speed PHY

Drop 'phandle to'.

> +
> +  phy-names:
> +    const: hs
> +
>    port:
>      $ref: /schemas/graph.yaml#/properties/port
>      description:
> @@ -137,6 +146,27 @@ allOf:
>          - vdda-usbdp-supply
>          - vddh-usbdp-supply
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - samsung,exynos2200-usb32drd-phy
> +    then:
> +      properties:
> +        clocks:
> +          maxItems: 1
> +        clock-names:
> +          items:
> +            - const: phy
> +        reg:
> +          maxItems: 1
> +        reg-names:
> +          maxItems: 1
> +      required:
> +        - phys
> +        - phy-names
> +
>    - if:
>        properties:
>          compatible:
> -- 
> 2.43.0
>