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Date:   Tue, 21 Jul 2020 13:44:23 +0000
From:   <Codrin.Ciubotariu@...rochip.com>
To:     <alexandre.belloni@...tlin.com>
CC:     <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <Nicolas.Ferre@...rochip.com>,
        <Claudiu.Beznea@...rochip.com>, <davem@...emloft.net>,
        <kuba@...nel.org>, <andrew@...n.ch>, <f.fainelli@...il.com>,
        <robh+dt@...nel.org>, <Ludovic.Desroches@...rochip.com>
Subject: Re: [PATCH net-next 2/7] macb: bindings doc: use an MDIO node as a
 container for PHY nodes

On 21.07.2020 16:29, Alexandre Belloni wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hi,
> 
> The proper subject prefix is dt-bindings: net: macb:

Will fix in v2. Thanks!

> 
> On 21/07/2020 13:02:29+0300, Codrin Ciubotariu wrote:
>> The MACB driver embeds an MDIO bus controller and for this reason there
>> was no need for an MDIO sub-node present to contain the PHY nodes. Adding
>> MDIO devies directly under an Ethernet node is deprecated, so an MDIO node
>> is included to contain of the PHY nodes (and other MDIO devices' nodes).
>>
>> Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
>> ---
>>   Documentation/devicetree/bindings/net/macb.txt | 15 ++++++++++++---
>>   1 file changed, 12 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/net/macb.txt b/Documentation/devicetree/bindings/net/macb.txt
>> index 0b61a90f1592..88d5199c2279 100644
>> --- a/Documentation/devicetree/bindings/net/macb.txt
>> +++ b/Documentation/devicetree/bindings/net/macb.txt
>> @@ -32,6 +32,11 @@ Required properties:
>>   The MAC address will be determined using the optional properties
>>   defined in ethernet.txt.
>>
>> +Optional subnodes:
>> +- mdio : specifies the MDIO bus in the MACB, used as a container for PHY nodes or other
>> +  nodes of devices present on the MDIO bus. Please see ethernet-phy.yaml in the same
>> +  directory for more details.
>> +
>>   Optional properties for PHY child node:
>>   - reset-gpios : Should specify the gpio for phy reset
>>   - magic-packet : If present, indicates that the hardware supports waking
>> @@ -48,8 +53,12 @@ Examples:
>>                local-mac-address = [3a 0e 03 04 05 06];
>>                clock-names = "pclk", "hclk", "tx_clk";
>>                clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>;
>> -             ethernet-phy@1 {
>> -                     reg = <0x1>;
>> -                     reset-gpios = <&pioE 6 1>;
>> +             mdio {
>> +                     #address-cells = <1>;
>> +                     #size-cells = <0>;
>> +                     ethernet-phy@1 {
>> +                             reg = <0x1>;
>> +                             reset-gpios = <&pioE 6 1>;
>> +                     };
>>                };
>>        };
>> --
>> 2.25.1
>>
> 
> --
> Alexandre Belloni, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com
> 

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