linux-kernel - Re: [PATCH 4/9] dt-bindings: phy: qcom,uniphy: Add ipq5332 USB3 SS UNIPHY

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Message-ID: <CAA8EJpq6JJ8XxK+QxCOZrQdXAeU5XVjp3PF-U8OG-2yk6eHtvw@mail.gmail.com>
Date:   Tue, 29 Aug 2023 17:16:00 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Praveenkumar I <quic_ipkumar@...cinc.com>
Cc:     robert.marko@...tura.hr, luka.perkov@...tura.hr, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, vkoul@...nel.org,
        kishon@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        gregkh@...uxfoundation.org, catalin.marinas@....com,
        will@...nel.org, p.zabel@...gutronix.de, arnd@...db.de,
        geert+renesas@...der.be, nfraprado@...labora.com, rafal@...ecki.pl,
        peng.fan@....com, quic_wcheng@...cinc.com,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        quic_varada@...cinc.com
Subject: Re: [PATCH 4/9] dt-bindings: phy: qcom,uniphy: Add ipq5332 USB3 SS UNIPHY

On Tue, 29 Aug 2023 at 17:00, Praveenkumar I <quic_ipkumar@...cinc.com> wrote:
>
> Add ipq5332 USB3 SS UNIPHY support.
>
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> ---
>  .../devicetree/bindings/phy/qcom,uniphy.yaml  | 117 +++++++++++++++++-
>  1 file changed, 114 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/phy/qcom,uniphy.yaml b/Documentation/devicetree/bindings/phy/qcom,uniphy.yaml
> index cbe2cc820009..17ba661b3d9b 100644
> --- a/Documentation/devicetree/bindings/phy/qcom,uniphy.yaml
> +++ b/Documentation/devicetree/bindings/phy/qcom,uniphy.yaml
> @@ -19,21 +19,53 @@ properties:
>      enum:
>        - qcom,usb-ss-ipq4019-phy
>        - qcom,usb-hs-ipq4019-phy
> +      - qcom,ipq5332-usb-ssphy
>
>    reg:
>      maxItems: 1
>
> +  reg-names:
> +    items:
> +      - const: phy_base
> +
> +  clocks:
> +    maxItems: 3
> +
> +  clock-names:
> +    maxItems: 3
> +
> +  "#clock-cells":
> +    const: 0
> +
>    resets:
> +    minItems: 1
>      maxItems: 2
>
>    reset-names:
> -    items:
> -      - const: por_rst
> -      - const: srif_rst
> +    minItems: 1
> +    maxItems: 2
> +
> +  clock-output-names:
> +    maxItems: 1
>
>    "#phy-cells":
>      const: 0
>
> +  qcom,phy-mux-sel:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    description:
> +      PHY Mux Selection for used to select which interface is going to use the
> +      combo PHY.
> +    items:
> +      - items:
> +          - description: phandle to TCSR syscon region
> +          - description: offset to the PHY Mux selection register
> +          - description: value to write on the PHY Mux selection register

Generally these values should be a part of the driver, since they are
specific to the particular SoC, rather than being different from
device to device.

> +
> +  vdd-supply:
> +    description:
> +      Phandle to 5V regulator supply to PHY digital circuit.
> +
>  required:
>    - compatible
>    - reg
> @@ -41,6 +73,68 @@ required:
>    - reset-names
>    - "#phy-cells"
>
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,ipq5332-usb-ssphy
> +    then:
> +      properties:
> +        clocks:
> +          maxItems: 3
> +        clock-names:
> +          items:
> +            - const: pipe
> +            - const: phy_cfg_ahb
> +            - const: phy_ahb
> +
> +        "#clock-cells":
> +          const: 0
> +
> +        clock-output-names:
> +          maxItems: 1
> +
> +        resets:
> +          maxItems: 1
> +        reset-names:
> +          items:
> +            - const: por_rst
> +
> +        vdda-supply:
> +          description:
> +            Phandle to 5V regulator supply to PHY digital circuit.
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,usb-ss-ipq4019-phy
> +    then:
> +      properties:
> +        resets:
> +          maxItems: 1
> +        reset-names:
> +          items:
> +            - const: por_rst
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,usb-hs-ipq4019-phy
> +    then:
> +      properties:
> +        resets:
> +          maxItems: 2
> +        reset-names:
> +          items:
> +            - const: por_rst
> +            - const: srif_rst
> +
>  additionalProperties: false
>
>  examples:
> @@ -55,3 +149,20 @@ examples:
>                 <&gcc USB2_HSPHY_S_ARES>;
>        reset-names = "por_rst", "srif_rst";
>      };
> +
> +  - |
> +    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
> +
> +    ssuniphy@...000 {
> +      #phy-cells = <0>;
> +      #clock-cells = <0>;
> +      compatible = "qcom,ipq5332-usb-ssphy";
> +      reg = <0x4b0000 0x800>;
> +      clocks = <&gcc GCC_USB0_PIPE_CLK>,
> +               <&gcc GCC_USB0_PHY_CFG_AHB_CLK>,
> +               <&gcc GCC_PCIE3X1_PHY_AHB_CLK>;
> +      clock-names = "pipe", "phy_cfg_ahb", "phy_ahb";
> +
> +      resets = <&gcc GCC_USB0_PHY_BCR>;
> +      reset-names = "por_rst";
> +    };
> --
> 2.34.1
>


-- 
With best wishes
Dmitry