netdev - Re: [PATCH v3 net-next 1/2] dt-bindings: net: airoha: Add EN7581 ethernet controller

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Date: Thu, 27 Jun 2024 16:10:07 -0600
From: Rob Herring <robh@...nel.org>
To: Lorenzo Bianconi <lorenzo@...nel.org>
Cc: netdev@...r.kernel.org, nbd@....name, lorenzo.bianconi83@...il.com,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, conor@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	devicetree@...r.kernel.org, catalin.marinas@....com,
	will@...nel.org, upstream@...oha.com,
	angelogioacchino.delregno@...labora.com,
	benjamin.larsson@...exis.eu, rkannoth@...vell.com,
	sgoutham@...vell.com, andrew@...n.ch
Subject: Re: [PATCH v3 net-next 1/2] dt-bindings: net: airoha: Add EN7581
 ethernet controller

On Sun, Jun 23, 2024 at 06:19:56PM +0200, Lorenzo Bianconi wrote:
> Introduce device-tree binding documentation for Airoha EN7581 ethernet
> mac controller.
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> ---
>  .../bindings/net/airoha,en7581-eth.yaml       | 108 ++++++++++++++++++
>  1 file changed, 108 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml b/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml
> new file mode 100644
> index 000000000000..e25a462a75d4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/airoha,en7581-eth.yaml
> @@ -0,0 +1,108 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/airoha,en7581-eth.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Airoha EN7581 Frame Engine Ethernet controller
> +
> +allOf:
> +  - $ref: ethernet-controller.yaml#
> +
> +maintainers:
> +  - Lorenzo Bianconi <lorenzo@...nel.org>
> +
> +description:
> +  The frame engine ethernet controller can be found on Airoha SoCs.
> +  These SoCs have dual GMAC ports.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - airoha,en7581-eth
> +
> +  reg:
> +    items:
> +      - description: Frame engine base address
> +      - description: QDMA0 base address
> +      - description: QDMA1 base address
> +
> +  reg-names:
> +    items:
> +      - const: fe
> +      - const: qdma0
> +      - const: qdma1
> +
> +  interrupts:
> +    maxItems: 10

You need to define what each interrupt is. Just like 'reg'.

> +
> +  resets:
> +    maxItems: 8
> +
> +  reset-names:
> +    items:
> +      - const: fe
> +      - const: pdma
> +      - const: qdma
> +      - const: xsi-mac
> +      - const: hsi0-mac
> +      - const: hsi1-mac
> +      - const: hsi-mac
> +      - const: xfp-mac
> +

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

What are these for? You have no child nodes to use them.

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - resets
> +  - reset-names
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/clock/en7523-clk.h>
> +
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      eth0: ethernet@...50000 {
> +        compatible = "airoha,en7581-eth";
> +        reg = <0 0x1fb50000 0 0x2600>,
> +              <0 0x1fb54000 0 0x2000>,
> +              <0 0x1fb56000 0 0x2000>;
> +        reg-names = "fe", "qdma0", "qdma1";
> +
> +        resets = <&scuclk 44>,
> +                 <&scuclk 30>,
> +                 <&scuclk 31>,
> +                 <&scuclk 6>,
> +                 <&scuclk 15>,
> +                 <&scuclk 16>,
> +                 <&scuclk 17>,
> +                 <&scuclk 26>;
> +        reset-names = "fe", "pdma", "qdma", "xsi-mac",
> +                      "hsi0-mac", "hsi1-mac", "hsi-mac",
> +                      "xfp-mac";
> +
> +        interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
> +      };
> +    };
> -- 
> 2.45.2
>