linux-kernel - Re: [PATCH V2 1/2] dt-bindings: phy: qcom,qmp-pcie: Add ipq9574 bindings

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Date:   Sun, 21 May 2023 23:57:55 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Devi Priya <quic_devipriy@...cinc.com>, 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,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     quic_srichara@...cinc.com, quic_sjaganat@...cinc.com,
        quic_kathirav@...cinc.com, quic_arajkuma@...cinc.com,
        quic_anusha@...cinc.com, quic_ipkumar@...cinc.com
Subject: Re: [PATCH V2 1/2] dt-bindings: phy: qcom,qmp-pcie: Add ipq9574
 bindings

On 19/05/2023 11:57, Devi Priya wrote:
> Add bindings for the PCIe QMP PHYs found on IPQ9574.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Devi Priya <quic_devipriy@...cinc.com>
> ---
>   Changes in V2:
> 	- Picked up the R-b tag
> 	- Did not convert the clock IDs to numerical values as the clock
> 	  header (dependent patch) is merged in latest rc1.
> 
>   .../phy/qcom,ipq9574-qmp-pcie-phy.yaml        | 90 +++++++++++++++++++
>   1 file changed, 90 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq9574-qmp-pcie-phy.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq9574-qmp-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq9574-qmp-pcie-phy.yaml
> new file mode 100644
> index 000000000000..7c8012647051
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,ipq9574-qmp-pcie-phy.yaml
> @@ -0,0 +1,90 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/qcom,ipq9574-qmp-pcie-phy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm QMP PHY controller (PCIe, IPQ9574)
> +
> +maintainers:
> +  - Vinod Koul <vkoul@...nel.org>
> +
> +description:
> +  The QMP PHY controller supports physical layer functionality for a number of
> +  controllers on Qualcomm chipsets, such as, PCIe, UFS, and USB.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,ipq9574-qmp-gen3x1-pcie-phy
> +      - qcom,ipq9574-qmp-gen3x2-pcie-phy
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 5
> +
> +  clock-names:
> +    items:
> +      - const: aux
> +      - const: cfg_ahb
> +      - const: anoc_lane
> +      - const: snoc_lane
> +      - const: pipe

Could you please reorder the clocks in the following way:
- aux
- cfg_ahb
- pipe
- .. the rest

This will allow us to use this schema for other IPQ QMP PCIe PHYs.

> +
> +  resets:
> +    maxItems: 2
> +
> +  reset-names:
> +    items:
> +      - const: phy
> +      - const: common
> +
> +  "#clock-cells":
> +    const: 0
> +
> +  clock-output-names:
> +    maxItems: 1
> +
> +  "#phy-cells":
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - resets
> +  - reset-names
> +  - "#clock-cells"
> +  - clock-output-names
> +  - "#phy-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,ipq9574-gcc.h>
> +    #include <dt-bindings/reset/qcom,ipq9574-gcc.h>
> +
> +    pcie0_phy: phy@...00 {
> +      compatible = "qcom,ipq9574-qmp-gen3x1-pcie-phy";
> +      reg = <0x00084000 0x1000>;
> +
> +      clocks = <&gcc GCC_PCIE0_AUX_CLK>,
> +               <&gcc GCC_PCIE0_AHB_CLK>,
> +               <&gcc GCC_ANOC_PCIE0_1LANE_M_CLK>,
> +               <&gcc GCC_SNOC_PCIE0_1LANE_S_CLK>,
> +               <&gcc GCC_PCIE0_PIPE_CLK>;
> +      clock-names = "aux", "cfg_ahb", "anoc_lane", "snoc_lane", "pipe";
> +
> +      resets = <&gcc GCC_PCIE0_PHY_BCR>,
> +               <&gcc GCC_PCIE0PHY_PHY_BCR>;
> +      reset-names = "phy", "common";
> +
> +      #clock-cells = <0>;
> +      clock-output-names = "gcc_pcie0_pipe_clk_src";
> +
> +      #phy-cells = <0>;
> +    };

-- 
With best wishes
Dmitry