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Message-ID: <856449f3-6341-78d8-28db-3d4b8a0a25ad@linaro.org>
Date:   Mon, 21 Nov 2022 12:59:57 +0100
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Subject: Re: [PATCH 1/6] dt-bindings: phy: Add PCIe PHY bindings for FSD
Content-Language: en-US
To:     Shradha Todi <shradha.t@samsung.com>, bhelgaas@google.com,
        robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        kishon@ti.com, vkoul@kernel.org, lpieralisi@kernel.org,
        kw@linux.com, mani@kernel.org, arnd@arndb.de,
        gregkh@linuxfoundation.org, alim.akhtar@samsung.com,
        ajaykumar.rs@samsung.com, rcsekar@samsung.com,
        sriranjani.p@samsung.com, bharat.uppal@samsung.com,
        s.prashar@samsung.com, aswani.reddy@samsung.com,
        pankaj.dubey@samsung.com, p.rajanbabu@samsung.com,
        niyas.ahmed@samsung.com, chanho61.park@samsung.com
Cc:     linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org
References: <20221121105210.68596-1-shradha.t@samsung.com>
 <CGME20221121104719epcas5p2f87febfba74a4ca6807b3095acf507d0@epcas5p2.samsung.com>
 <20221121105210.68596-2-shradha.t@samsung.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20221121105210.68596-2-shradha.t@samsung.com>
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Precedence: bulk

On 21/11/2022 11:52, Shradha Todi wrote:
> Document the PCIe PHY device tree bindings for Tesla
> FSD SoC

Subject: drop second, redundant "bindings".

> 
> Signed-off-by: Shradha Todi <shradha.t@samsung.com>
> ---
>  .../bindings/phy/phy-tesla-pcie.yaml          | 75 +++++++++++++++++++
>  1 file changed, 75 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-tesla-pcie.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-tesla-pcie.yaml b/Documentation/devicetree/bindings/phy/phy-tesla-pcie.yaml
> new file mode 100644
> index 000000000000..8fa9a050af7a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-tesla-pcie.yaml

Filename based on compatible.

> @@ -0,0 +1,75 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/phy-tesla-pcie.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Tesla FSD SoC PCIe PHY
> +
> +maintainers:
> +  - Shradha Todi <shradha.t@samsung.com>
> +
> +properties:
> +  "#phy-cells":
> +    const: 0

Put compatible as first.

> +
> +  compatible:
> +    enum:
> +      - tesla,fsd-pcie-phy
> +
> +  reg:
> +    minItems: 2

Drop minItems

> +    maxItems: 2
> +
> +  reg-names:
> +    minItems: 2
> +    maxItems: 2

Drop both.

> +    items:
> +      enum: [phy, pcs]

Instead list items one after another.

> +    description: |
> +      phy is the register access to PMA layer
> +      pcs is the register access to PCS layer

These go to describing items in 'reg:'

> +
> +  phy-mode:
> +    description: |
> +      Defines the bifurcation mode of the PHY

enum, probably type as well... phy-mode is usually a string. Is it here?

> +
> +  tesla,pmureg-phandle:

Drop phandle, so tesla,pmu-syscon

> +    $ref: '/schemas/types.yaml#/definitions/phandle'

Drop quotes

> +    description: phandle for PMU system controller interface used to
> +                 control PMU register bits for PCIe PHY
> +
> +  tesla,pcie-sysreg:
> +    $ref: '/schemas/types.yaml#/definitions/phandle'

Drop quotes

> +    description: phandle for system control registers, used to
> +                 control phy signals at system level
> +
> +required:
> +  - "#phy-cells"
> +  - compatible

compatible first.

> +  - reg
> +  - reg-names
> +  - phy-mode
> +  - tesla,pmureg-phandle
> +  - tesla,pcie-sysreg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    bus {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      pcie_phy0: pcie-phy@15080000 {
> +        compatible = "tesla,fsd-pcie-phy";
> +        #phy-cells = <0>;
> +        reg = <0x0 0x15080000 0x0 0x2000>, <0x0 0x150A0000 0x0 0x1000>;
> +        reg-names = "phy", "pcs";
> +        tesla,pmureg-phandle = <&pmu_system_controller>;
> +        tesla,pcie-sysreg = <&sysreg_fsys0>;
> +        phy-mode = <0>;
> +        status = "disabled";

Drop status

> +      };
> +    };
> +...

Best regards,
Krzysztof