netdev - Re: [PATCH 4/5] dt-bindings: net: document loongson.pci-gmac

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Date:   Thu, 31 Oct 2019 09:35:10 +0100
From:   Simon Horman <simon.horman@...ronome.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, davem@...emloft.net,
        robh+dt@...nel.org, mark.rutland@....com, axboe@...nel.dk,
        peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, bhelgaas@...gle.com, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-ide@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH 4/5] dt-bindings: net: document loongson.pci-gmac

Hi Jiaxun,

thanks for your patch.

On Wed, Oct 30, 2019 at 09:53:46PM +0800, Jiaxun Yang wrote:
> This binding will provide extra information for PCI enabled
> device.
> 
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>

Please verify the bindings using dtbs_check as described in
Documentation/devicetree/writing-schema.rst

> ---
>  .../net/wireless/loongson,pci-gmac.yaml       | 71 +++++++++++++++++++
>  1 file changed, 71 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/wireless/loongson,pci-gmac.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/wireless/loongson,pci-gmac.yaml b/Documentation/devicetree/bindings/net/wireless/loongson,pci-gmac.yaml
> new file mode 100644
> index 000000000000..5f764bd46735
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/wireless/loongson,pci-gmac.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/allwinner,sun7i-a20-gmac.yaml#

The id does not match the filename of the schema.

i.e. the above should be:

	$id: http://devicetree.org/schemas/net/wireless/loongson,pci-gmac.yaml#

> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Loongson PCI GMAC Device Tree Bindings
> +
> +allOf:
> +  - $ref: "snps,dwmac.yaml#"

snps,dwmac.yaml# is in the parent directory relative to loongson,pci-gmac.yaml.
So I think the above needs to be:

	$ref: "../snps,dwmac.yaml#"

> +
> +maintainers:
> +  - Jiaxun Yang <jiaxun.yang@...goat.com>
> +
> +properties:
> +  compatible:
> +    const: loongson,pci-gmac
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    minItems: 1
> +    maxItems: 3
> +    items:
> +      - description: Combined signal for various interrupt events
> +      - description: The interrupt to manage the remote wake-up packet detection
> +      - description: The interrupt that occurs when Rx exits the LPI state
> +
> +  interrupt-names:
> +    minItems: 1
> +    maxItems: 3
> +    items:
> +      - const: macirq
> +      - const: eth_wake_irq
> +      - const: eth_lpi
> +
> +  clocks:
> +    items:
> +      - description: GMAC main clock
> +
> +  clock-names:
> +    items:
> +      - const: stmmaceth
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-names
> +  - clocks
> +  - clock-names
> +  - phy-mode
> +
> +examples:
> +  - |
> +    gmac: ethernet@ {

I would have expected a bus address here, f.e.:

	gmac: ethernet@...0001800

> +        compatible = "loongson,pci-irq";
> +        reg = <0x00001800 0 0 0 0>;

I think there is one to many cell in the above, perhaps it should be.

	reg = <0x00001800 0 0 0>;

Also, I would expect the registers to be wider than 0, i.e. no registers.

`
> +        interrupts = <12>, <13>;
> +        interrupt-names = "macirq", "eth_lpi";
> +        clocks =  <&clk_pch_gmac>;
> +        clock-names = "stmmaceth";
> +        phy-mode = "rgmii";
> +    };
> +
> +# FIXME: We should set it, but it would report all the generic
> +# properties as additional properties.
> +# additionalProperties: false
> +
> +...
> -- 
> 2.23.0
>