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

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Date:   Thu, 31 Oct 2019 18:57:16 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     Simon Horman <simon.horman@...ronome.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


在 2019/10/31 下午4:35, Simon Horman 写道:
> 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.

Hi Simon,

Thanks for your suggestions above, will fix in v1.

Here, the reg domain is a standard 5-cell representing a PCI device,

See: Documentation/devicetree/bindings/pci/pci.txt and IEEE Std 
1275-1994,<https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/pci/pci.txt>

Should I add some description?

Jiaxun