linux-kernel - Re: [PATCH] ARM: dts: rockchip: Add mdio node to ethernet node

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Message-ID: <CAOf5uw=jUeh0YDQu2SFjMsRzVH-WaXeZoq5mAbAQwD_dwttjnA@mail.gmail.com>
Date:	Mon, 21 Mar 2016 09:32:58 +0100
From:	Michael Trimarchi <michael@...rulasolutions.com>
To:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc:	Andreas Färber <afaerber@...e.de>,
	Mark Rutland <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	Heiko Stuebner <heiko@...ech.de>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Kumar Gala <galak@...eaurora.org>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] ARM: dts: rockchip: Add mdio node to ethernet node

Hi

On Mon, Mar 21, 2016 at 9:23 AM, Tomeu Vizoso
<tomeu.vizoso@...labora.com> wrote:
> On 18 March 2016 at 22:34, Andreas Färber <afaerber@...e.de> wrote:
>> Am 18.03.2016 um 12:20 schrieb Tomeu Vizoso:
>>> So the dwmac device manages to probe again.
>>>
>>> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
>>> Fixes: 88f8b1bb41c6 ("stmmac: Fix 'eth0: No PHY found' regression")
>>> ---
>>>  arch/arm/boot/dts/rk3288-rock2-som.dtsi | 8 ++++++++
>>>  1 file changed, 8 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/rk3288-rock2-som.dtsi b/arch/arm/boot/dts/rk3288-rock2-som.dtsi
>>> index 1ece66f3e162..4ba7ddecb478 100644
>>> --- a/arch/arm/boot/dts/rk3288-rock2-som.dtsi
>>> +++ b/arch/arm/boot/dts/rk3288-rock2-som.dtsi
>>> @@ -101,6 +101,14 @@
>>>       snps,reset-delays-us = <0 10000 30000>;
>>>       rx_delay = <0x10>;
>>>       tx_delay = <0x30>;
>>> +     mdio0 {
>>> +             #address-cells = <1>;
>>> +             #size-cells = <0>;
>>> +             compatible = "snps,dwmac-mdio";
>>> +             ethphy1: ethernet-phy@1 {
>>> +                     reg = <1>;
>>> +             };
>>> +     };
>>
>> This is a) ugly for lack of white lines in between, b) unnecessary since
>> this is being fixed in the stmmac driver where it will benefit more than
>> just this one SoM.
>
> So is this redundant information, or just not necessary with the
> present kernel driver because of some assumption in its current
> implementation?
>

I have the same fix on my firefly tree. Look likes correct and describe the
connection

Michael

> Thanks,
>
> Tomeu
>
>> Regards,
>> Andreas
>>
>>>  };
>>>
>>>  &i2c0 {
>>
>> --
>> SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
>> GF: Felix Imendörffer, Jane Smithard, Graham Norton; HRB 21284 (AG Nürnberg)
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip

-- 
| Michael Nazzareno Trimarchi                     Amarula Solutions BV |
| COO  -  Founder                                      Cruquiuskade 47 |
| +31(0)851119172                                 Amsterdam 1018 AM NL |
|                  [`as] http://www.amarulasolutions.com               |

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