linux-kernel - Re: [PATCH net-next v7 14/14] dt-bindings: net: add Microchip's LAN865X 10BASE-T1S MACPHY

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Message-ID: <20240903144359.GA981887-robh@kernel.org>
Date: Tue, 3 Sep 2024 09:43:59 -0500
From: Rob Herring <robh@...nel.org>
To: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, horms@...nel.org, saeedm@...dia.com,
	anthony.l.nguyen@...el.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, andrew@...n.ch, corbet@....net,
	linux-doc@...r.kernel.org, krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org, devicetree@...r.kernel.org,
	horatiu.vultur@...rochip.com, ruanjinjie@...wei.com,
	steen.hegelund@...rochip.com, vladimir.oltean@....com,
	masahiroy@...nel.org, alexanderduyck@...com, krzk+dt@...nel.org,
	rdunlap@...radead.org, hkallweit1@...il.com, linux@...linux.org.uk,
	UNGLinuxDriver@...rochip.com, Thorsten.Kummermehr@...rochip.com,
	Pier.Beruto@...emi.com, Selvamani.Rajagopal@...emi.com,
	Nicolas.Ferre@...rochip.com, benjamin.bigler@...nformulastudent.ch,
	linux@...ler.io, markku.vorne@...power.com,
	Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH net-next v7 14/14] dt-bindings: net: add Microchip's
 LAN865X 10BASE-T1S MACPHY

On Tue, Sep 03, 2024 at 04:17:05PM +0530, Parthiban Veerasooran wrote:
> The LAN8650/1 combines a Media Access Controller (MAC) and an Ethernet
> PHY to enable 10BASE-T1S networks. The Ethernet Media Access Controller
> (MAC) module implements a 10 Mbps half duplex Ethernet MAC, compatible
> with the IEEE 802.3 standard and a 10BASE-T1S physical layer transceiver
> integrated into the LAN8650/1. The communication between the Host and the
> MAC-PHY is specified in the OPEN Alliance 10BASE-T1x MACPHY Serial
> Interface (TC6).
> 
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> Reviewed-by: Andrew Lunn <andrew@...n.ch>
> Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
> ---
>  .../bindings/net/microchip,lan8650.yaml       | 80 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 81 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/microchip,lan8650.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/microchip,lan8650.yaml b/Documentation/devicetree/bindings/net/microchip,lan8650.yaml
> new file mode 100644
> index 000000000000..b7b755b27b78
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/microchip,lan8650.yaml
> @@ -0,0 +1,80 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/microchip,lan8650.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip LAN8650/1 10BASE-T1S MACPHY Ethernet Controllers
> +
> +maintainers:
> +  - Parthiban Veerasooran <parthiban.veerasooran@...rochip.com>
> +
> +description:
> +  The LAN8650/1 combines a Media Access Controller (MAC) and an Ethernet
> +  PHY to enable 10BASE‑T1S networks. The Ethernet Media Access Controller
> +  (MAC) module implements a 10 Mbps half duplex Ethernet MAC, compatible
> +  with the IEEE 802.3 standard and a 10BASE-T1S physical layer transceiver
> +  integrated into the LAN8650/1. The communication between the Host and
> +  the MAC-PHY is specified in the OPEN Alliance 10BASE-T1x MACPHY Serial
> +  Interface (TC6).
> +
> +allOf:
> +  - $ref: /schemas/net/ethernet-controller.yaml#
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: microchip,lan8650
> +      - items:
> +          - const: microchip,lan8651
> +          - const: microchip,lan8650
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      Interrupt from MAC-PHY asserted in the event of Receive Chunks
> +      Available, Transmit Chunk Credits Available and Extended Status
> +      Event.
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    minimum: 15000000
> +    maximum: 25000000
> +

> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0

What are these for? They apply to child nodes, yet you have no child 
nodes defined.

Rob