linux-kernel - Re: [PATCH v6 04/18] dt-bindings: Add Qualcomm USB SuperSpeed PHY bindings

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Message-ID: <20200218204558.GA5022@bogus>
Date:   Tue, 18 Feb 2020 14:45:58 -0600
From:   Rob Herring <robh@...nel.org>
To:     Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        gregkh@...uxfoundation.org, jackp@...eaurora.org, balbi@...nel.org,
        bjorn.andersson@...aro.org, linux-kernel@...r.kernel.org,
        Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>,
        Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@...il.com>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH v6 04/18] dt-bindings: Add Qualcomm USB SuperSpeed PHY
 bindings

On Mon, Feb 10, 2020 at 12:07:09PM +0000, Bryan O'Donoghue wrote:
> From: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>
> 
> Binding description for Qualcomm's Synopsys 1.0.0 SuperSpeed PHY. This PHY
> appears in a number of SoCs on various flavors of 20nm and 28nm nodes.
> 
> Based on Sriharsha Allenki's <sallenki@...eaurora.org> original
> definitions.
> 
> [bod: converted to yaml format]
> 
> Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>
> Cc: Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@...il.com>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@...il.com>
> Cc: devicetree@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> ---
>  .../devicetree/bindings/phy/qcom,usb-ss.yaml  | 83 +++++++++++++++++++
>  1 file changed, 83 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/qcom,usb-ss.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/qcom,usb-ss.yaml b/Documentation/devicetree/bindings/phy/qcom,usb-ss.yaml
> new file mode 100644
> index 000000000000..377b9e1e39d3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,usb-ss.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/phy/qcom,usb-ss.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm Synopsys 1.0.0 SuperSpeed USB PHY
> +
> +maintainers:
> +  - Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> +
> +description: |
> +  Qualcomm Synopsys 1.0.0 SuperSpeed USB PHY
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,usb-ssphy

Pretty generic... Only 1 SS USB PHY in all of QCom forever?

IOW, this needs an SoC specific compatible.

> +
> +  reg:
> +    maxItems: 1
> +
> +  "#phy-cells":
> +    const: 0
> +
> +  clocks:
> +    items:
> +      - description: rpmcc clock
> +      - description: PHY AHB clock
> +      - description: SuperSpeed pipe clock
> +
> +  clock-names:
> +    items:
> +      - const: ref
> +      - const: ahb
> +      - const: pipe
> +
> +  vdd-supply:
> +    description: phandle to the regulator VDD supply node.
> +
> +  vdda1p8-supply:
> +    description: phandle to the regulator 1.8V supply node.
> +
> +  resets:
> +    items:
> +      - description: COM reset
> +      - description: PHY reset line
> +
> +  reset-names:
> +    items:
> +      - const: com
> +      - const: phy
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#phy-cells"
> +  - clocks
> +  - clock-names
> +  - vdd-supply
> +  - vdda1p8-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,gcc-qcs404.h>
> +    #include <dt-bindings/clock/qcom,rpmcc.h>
> +    usb3_phy: usb3-phy@...00 {
> +        compatible = "qcom,usb-ssphy";
> +        reg = <0x78000 0x400>;
> +        #phy-cells = <0>;
> +        clocks = <&rpmcc RPM_SMD_LN_BB_CLK>,
> +                 <&gcc GCC_USB_HS_PHY_CFG_AHB_CLK>,
> +                 <&gcc GCC_USB3_PHY_PIPE_CLK>;
> +        clock-names = "ref", "ahb", "pipe";
> +        resets = <&gcc GCC_USB3_PHY_BCR>,
> +                 <&gcc GCC_USB3PHY_PHY_BCR>;
> +        reset-names = "com", "phy";
> +        vdd-supply = <&vreg_l3_1p05>;
> +        vdda1p8-supply = <&vreg_l5_1p8>;
> +    };
> +...
> -- 
> 2.25.0
>