# Re: \[PATCH v2 1/2\] dt-bindings: net: Add bindings for LiteETH

- From: Rob Herring \<robh@kernel.org\>
- Date: 2021-08-23 18:44:13 
- List: netdev
- Page: https://ratatoskr.run/netdev/2021/08/1486139
- Thread: https://ratatoskr.run/linux-devicetree/2021/08/1483641/t.md

```text
On Fri, Aug 20, 2021 at 05:17:25PM +0930, Joel Stanley wrote:
> LiteETH is a small footprint and configurable Ethernet core for FPGA
> based system on chips.
> 
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> ---
> v2:
>  - Fix dtschema check warning relating to registers
>  - Add names to the registers to make it easier to distinguish which is
>    what region
>  - Add mdio description
>  - Includ ethernet-controller parent description
> 
>  .../bindings/net/litex,liteeth.yaml           | 79 +++++++++++++++++++
>  1 file changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/litex,liteeth.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/litex,liteeth.yaml b/Documentation/devicetree/bindings/net/litex,liteeth.yaml
> new file mode 100644
> index 000000000000..30f8f8b0b657
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/litex,liteeth.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/litex,liteeth.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: LiteX LiteETH ethernet device
> +
> +maintainers:
> +  - Joel Stanley [ref]
> +
> +description: |
> +  LiteETH is a small footprint and configurable Ethernet core for FPGA based
> +  system on chips.
> +
> +  The hardware source is Open Source and can be found on at
> +  https://github.com/enjoy-digital/liteeth/.
> +
> +allOf:
> +  - $ref: ethernet-controller.yaml#
> +
> +properties:
> +  compatible:
> +    const: litex,liteeth
> +
> +  reg:
> +    minItems: 3
> +    items:
> +      - description: MAC registers
> +      - description: MDIO registers
> +      - description: Packet buffer
> +
> +  reg-names:
> +    minItems: 3

Need to define the names here.

> +
> +  interrupts:
> +    maxItems: 1
> +

> +  rx-fifo-depth: true
> +  tx-fifo-depth: true

Needs a vendor prefix, type, description and constraints.

> +  mac-address: true
> +  local-mac-address: true
> +  phy-handle: true
> +
> +  mdio:
> +    $ref: mdio.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    mac: ethernet@8020000 {
> +        compatible = "litex,liteeth";
> +        reg = <0x8021000 0x100>,
> +              <0x8020800 0x100>,
> +              <0x8030000 0x2000>;
> +        reg-names = "mac", "mdio", "buffer";
> +        rx-fifo-depth = <1024>;
> +        tx-fifo-depth = <1024>;
> +        interrupts = <0x11 0x1>;
> +        phy-handle = <&eth_phy>;
> +
> +        mdio {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          eth_phy: ethernet-phy@0 {
> +            reg = <0>;
> +          };
> +        };
> +    };
> +...
> +
> +#  vim: set ts=2 sw=2 sts=2 tw=80 et cc=80 ft=yaml :
> -- 
> 2.32.0
> 
> 
```