linux-kernel - Re: [PATCH net-next 2/2] net: hns: enet specisies a reference to dsaf (config and documents)

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Date:	Mon, 7 Dec 2015 15:14:13 +0800
From:	"Yankejian (Hackim Yim)" <yankejian@...wei.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	<davem@...emloft.net>, <fengguang.wu@...el.com>,
	<robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<catalin.marinas@....com>, <will.deacon@....com>,
	<salil.mehta@...wei.com>, <Yisen.Zhuang@...wei.com>,
	<liguozhu@...wei.com>, <lisheng011@...wei.com>,
	<huangdaode@...ilicon.com>, <xuwei5@...ilicon.com>,
	<haifeng.wei@...wei.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH net-next 2/2] net: hns: enet specisies a reference to dsaf
 (config and documents)



On 2015/12/6 6:19, Arnd Bergmann wrote:
> On Saturday 05 December 2015 14:10:56 yankejian wrote:
>> diff --git a/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt b/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt
>> index 80411b2..ecacfa4 100644
>> --- a/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt
>> +++ b/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt
>> @@ -4,8 +4,6 @@ Required properties:
>>  - compatible: should be "hisilicon,hns-dsaf-v1" or "hisilicon,hns-dsaf-v2".
>>    "hisilicon,hns-dsaf-v1" is for hip05.
>>    "hisilicon,hns-dsaf-v2" is for Hi1610 and Hi1612.
>> -- dsa-name: dsa fabric name who provide this interface.
>> -  should be "dsafX", X is the dsaf id.
>>  - mode: dsa fabric mode string. only support one of dsaf modes like these:
>>                 "2port-64vf",
>>                 "6port-16rss",
>> @@ -26,9 +24,8 @@ Required properties:
>>  
>>  Example:
>>  
>> -dsa: dsa@...00000 {
>> +dsaf0: dsa@...00000 {
>>         compatible = "hisilicon,hns-dsaf-v1";
>> -       dsa_name = "dsaf0";
>>         mode = "6port-16rss";
>>         interrupt-parent = <&mbigen_dsa>;
>>         reg = <0x0 0xC0000000 0x0 0x420000
>> diff --git a/Documentation/devicetree/bindings/net/hisilicon-hns-nic.txt b/Documentation/devicetree/bindings/net/hisilicon-hns-nic.txt
>> index 41d19be..e6a9d1c 100644
>> --- a/Documentation/devicetree/bindings/net/hisilicon-hns-nic.txt
>> +++ b/Documentation/devicetree/bindings/net/hisilicon-hns-nic.txt
>> @@ -4,8 +4,9 @@ Required properties:
>>  - compatible: "hisilicon,hns-nic-v1" or "hisilicon,hns-nic-v2".
>>    "hisilicon,hns-nic-v1" is for hip05.
>>    "hisilicon,hns-nic-v2" is for Hi1610 and Hi1612.
>> -- ae-name: accelerator name who provides this interface,
>> -  is simply a name referring to the name of name in the accelerator node.
>> +- ae-handle: accelerator engine handle for hns,
>> +  specifies a reference to the associating hardware driver node.
>> +  see Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt
>>  - port-id: is the index of port provided by DSAF (the accelerator). DSAF can
>>    connect to 8 PHYs. Port 0 to 1 are both used for adminstration purpose. They
>>    are called debug ports.
>> @@ -41,7 +42,7 @@ Example:
>>  
>>
> This looks like an incompatible change, as you add and remove
> required properties. Is there a way to support both the old and
> the new style?
>
> 	Arnd
>
> .

Hi Arnd,
Thanks for your suggestions.  it must be set the same strings in dsaf node and every enet node before.
it seems inappropriate. as Rob Herring <robh@...nel.org> 's suggestions, that would solve associating
enet with a particular dsaf. so we discus the solution with Yisen Zhuang <yisen.zhuang@...wei.com>.
we decide to use the new way instead of the old one.

Best regards,
yankejian

>


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