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Date: Wed, 26 Jun 2024 10:24:38 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Frank Li <Frank.Li@....com>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
<conor+dt@...nel.org>, "open list:NETWORKING DRIVERS"
<netdev@...r.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>
Cc: imx@...ts.linux.dev
Subject: Re: [PATCH 1/1] dt-bindings: net: convert enetc to yaml
On 25/06/2024 22:22, Frank Li wrote:
> Convert enetc device binding file to yaml. Split to 3 yaml files,
> fsl-enetc.yaml, fsl-enetc-mdio.yaml, fsl-enetc-ierb.yaml.
>
> Additional Changes:
> - Add pci<vendor id>,<production id> in compatible string.
> - Ref to common ethernet-controller.yaml and mdio.yaml.
> - Remove fixed-link part.
>
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
> .../bindings/net/fsl-enetc-ierb.yaml | 35 ++++++
> .../bindings/net/fsl-enetc-mdio.yaml | 46 +++++++
> .../devicetree/bindings/net/fsl-enetc.txt | 119 ------------------
> .../devicetree/bindings/net/fsl-enetc.yaml | 43 +++++++
> 4 files changed, 124 insertions(+), 119 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/net/fsl-enetc-ierb.yaml
> create mode 100644 Documentation/devicetree/bindings/net/fsl-enetc-mdio.yaml
> delete mode 100644 Documentation/devicetree/bindings/net/fsl-enetc.txt
> create mode 100644 Documentation/devicetree/bindings/net/fsl-enetc.yaml
Filename matching compatible, so vendor prefixes+coma+device name.
>
> diff --git a/Documentation/devicetree/bindings/net/fsl-enetc-ierb.yaml b/Documentation/devicetree/bindings/net/fsl-enetc-ierb.yaml
> new file mode 100644
> index 0000000000000..bb083b2f8f399
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/fsl-enetc-ierb.yaml
> @@ -0,0 +1,35 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/fsl-enetc-ierb.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Integrated Endpoint Register Block
> +
> +description:
> + The fsl_enetc driver can probe on the Integrated Endpoint Register
> + Block, which preconfigures the FIFO limits for the ENETC ports.
> +
> +maintainers:
> + - Frank Li <Frank.Li@....com>
> +
> +properties:
> + compatible:
> + enum:
> + - fsl,ls1028a-enetc-ierb
> +
> + reg:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + ierb@...800000 {
> + compatible = "fsl,ls1028a-enetc-ierb";
> + reg = <0xf0800000 0x10000>;
> + };
> diff --git a/Documentation/devicetree/bindings/net/fsl-enetc-mdio.yaml b/Documentation/devicetree/bindings/net/fsl-enetc-mdio.yaml
> new file mode 100644
> index 0000000000000..e8d0d4aa1112f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/fsl-enetc-mdio.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/fsl-enetc-mdio.yaml#
fsl,enetc-mdio.yaml
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ENETC the central MDIO PCIe endpoint device
> +
> +description:
> + In this case, the mdio node should be defined as another PCIe
> + endpoint node, at the same level with the ENETC port nodes
> +
> +maintainers:
> + - Frank Li <Frank.Li@....com>.
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - pci1957,ee01
> + - const: fsl,enetc-mdio
> +
> + reg:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> +
> +allOf:
> + - $ref: mdio.yaml
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + mdio@0,3 {
> + compatible = "pci1957,ee01", "fsl,enetc-mdio";
> + reg = <0x000300 0>;
The ranges do not match unit address, at least for simple case of
address/size-cells=1. Looks like this should be enclosed in pci {} node
and then with proper ranges. Otherwise it is a bit confusing.
> diff --git a/Documentation/devicetree/bindings/net/fsl-enetc.txt b/Documentation/devicetree/bindings/net/fsl-enetc.txt
> deleted file mode 100644
> index 9b9a3f197e2d3..0000000000000
> --- a/Documentation/devicetree/bindings/net/fsl-enetc.txt
> +++ /dev/null
> @@ -1,119 +0,0 @@
> -* ENETC ethernet device tree bindings
> -
> -Depending on board design and ENETC port type (internal or
> -external) there are two supported link modes specified by
> -below device tree bindings.
> -
> -Required properties:
> -
> -- reg : Specifies PCIe Device Number and Function
> - Number of the ENETC endpoint device, according
> - to parent node bindings.
> -- compatible : Should be "fsl,enetc".
> -
> -1. The ENETC external port is connected to a MDIO configurable phy
> -
> -1.1. Using the local ENETC Port MDIO interface
> -
> -In this case, the ENETC node should include a "mdio" sub-node
> -that in turn should contain the "ethernet-phy" node describing the
> -external phy. Below properties are required, their bindings
> -already defined in Documentation/devicetree/bindings/net/ethernet.txt or
> -Documentation/devicetree/bindings/net/phy.txt.
> -
> -Required:
> -
> -- phy-handle : Phandle to a PHY on the MDIO bus.
> - Defined in ethernet.txt.
> -
> -- phy-connection-type : Defined in ethernet.txt.
> -
> -- mdio : "mdio" node, defined in mdio.txt.
> -
> -- ethernet-phy : "ethernet-phy" node, defined in phy.txt.
> -
> -Example:
> -
> - ethernet@0,0 {
> - compatible = "fsl,enetc";
> - reg = <0x000000 0 0 0 0>;
> - phy-handle = <&sgmii_phy0>;
> - phy-connection-type = "sgmii";
> -
> - mdio {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - sgmii_phy0: ethernet-phy@2 {
> - reg = <0x2>;
> - };
> - };
> - };
> -
> -1.2. Using the central MDIO PCIe endpoint device
> -
> -In this case, the mdio node should be defined as another PCIe
> -endpoint node, at the same level with the ENETC port nodes.
> -
> -Required properties:
> -
> -- reg : Specifies PCIe Device Number and Function
> - Number of the ENETC endpoint device, according
> - to parent node bindings.
> -- compatible : Should be "fsl,enetc-mdio".
> -
> -The remaining required mdio bus properties are standard, their bindings
> -already defined in Documentation/devicetree/bindings/net/mdio.txt.
> -
> -Example:
> -
> - ethernet@0,0 {
> - compatible = "fsl,enetc";
> - reg = <0x000000 0 0 0 0>;
> - phy-handle = <&sgmii_phy0>;
> - phy-connection-type = "sgmii";
> - };
> -
> - mdio@0,3 {
> - compatible = "fsl,enetc-mdio";
> - reg = <0x000300 0 0 0 0>;
> - #address-cells = <1>;
> - #size-cells = <0>;
> - sgmii_phy0: ethernet-phy@2 {
> - reg = <0x2>;
> - };
> - };
> -
> -2. The ENETC port is an internal port or has a fixed-link external
> -connection
> -
> -In this case, the ENETC port node defines a fixed link connection,
> -as specified by Documentation/devicetree/bindings/net/fixed-link.txt.
> -
> -Required:
> -
> -- fixed-link : "fixed-link" node, defined in "fixed-link.txt".
> -
> -Example:
> - ethernet@0,2 {
> - compatible = "fsl,enetc";
> - reg = <0x000200 0 0 0 0>;
> - fixed-link {
> - speed = <1000>;
> - full-duplex;
> - };
> - };
> -
> -* Integrated Endpoint Register Block bindings
> -
> -Optionally, the fsl_enetc driver can probe on the Integrated Endpoint Register
> -Block, which preconfigures the FIFO limits for the ENETC ports. This is a node
> -with the following properties:
> -
> -- reg : Specifies the address in the SoC memory space.
> -- compatible : Must be "fsl,ls1028a-enetc-ierb".
> -
> -Example:
> - ierb@...800000 {
> - compatible = "fsl,ls1028a-enetc-ierb";
> - reg = <0x01 0xf0800000 0x0 0x10000>;
> - };
> diff --git a/Documentation/devicetree/bindings/net/fsl-enetc.yaml b/Documentation/devicetree/bindings/net/fsl-enetc.yaml
> new file mode 100644
> index 0000000000000..e60b375395fcc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/fsl-enetc.yaml
> @@ -0,0 +1,43 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/fsl-enetc.yaml#
fsl,enetc.yaml
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ENETC ethernet
Best regards,
Krzysztof
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