From: bert@a20•net (Bert Lindner)
To: linux-arm-kernel@lists•infradead.org
Subject: 4.5.0 on sun7i-a20-olinuxino-lime2: libphy: PHY stmmac-0:ffffffff not found (regression from rc7)
Date: Sat, 21 May 2016 17:47:05 +0200 [thread overview]
Message-ID: <574082F9.7010702@a20.net> (raw)
In-Reply-To: <573EE8B4.1050701@arm.com>
Hi,
On 2016-05-20 12:36, Marc Zyngier wrote:
> On 20/05/16 11:30, Andre Heider wrote:
>> Hi,
>>
>> On Fri, May 20, 2016 at 10:14 AM, Giuseppe CAVALLARO
>> <peppe.cavallaro@st•com> wrote:
>>> On 5/20/2016 9:56 AM, Marc Zyngier wrote:
>>>>
>>>> On 20/05/16 06:44, Andre Heider wrote:
>>>>>
>>>>> Giuseppe, Alexandre, et al.,
>>>>>
>>>>> On Thu, Mar 17, 2016 at 8:52 AM, Marc Zyngier <marc.zyngier@arm•com>
>>>>> wrote:
>>>>>>
>>>>>> On Thu, 17 Mar 2016 00:56:40 +0100
>>>>>> Bert Lindner <bert@a20•net> wrote:
>>>>>>>
>>>>>>> On 2016-03-16 18:42, Marc Zyngier wrote:
>>>>>>>>
>>>>>>>> On 16/03/16 15:10, Bert Lindner wrote:
>>>>>>>>>
>>>>>>>>> On 2016-03-16 14:10, Andreas F?rber wrote:
>>>>>>>>>>
>>>>>>>>>> Am 16.03.2016 um 13:09 schrieb Robin Murphy:
>>>>>>>>>>>
>>>>>>>>>>> On 16/03/16 11:39, Marc Zyngier wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> On 16/03/16 11:19, Bert Lindner wrote:
>>>>>
>>>>> ...
>>>>>>>>>>>>>
>>>>>>>>>>>>> For the board sun7i-a20-olinuxino-lime2, there seems to be a
>>>>>>>>>>>>> problem
>>>>>>>>>>>>> with the eth0 PHY in mainline kernel 4.5.0 that developed since
>>>>>>>>>>>>> 4.5.0-rc7. Ethernet does not work, although eth0 is reported:
>>>>>
>>>>> ...
>>>>>>>>>>>>>
>>>>>>>>>>>>> [ 9.767125] NET: Registered protocol family 10
>>>>>>>>>>>>> [ 10.357405] libphy: PHY stmmac-0:ffffffff not found
>>>>>>>>>>>>> [ 10.362382] eth0: Could not attach to PHY
>>>>>>>>>>>>> [ 10.366557] stmmac_open: Cannot attach to PHY (error: -19)
>>>>>
>>>>> ...
>>>>>>>>>>
>>>>>>>>>> v4 fixes for 4.5 are here:
>>>>>>>>>>
>>>>>>>>>> https://patchwork.ozlabs.org/patch/598195/ (revert)
>>>>>>>>>> https://patchwork.ozlabs.org/patch/598196/
>>>>>
>>>>> ...
>>>>>>>>
>>>>>>>> Good to know, thanks. Could you also give the potential fix a go (as
>>>>>>>> mentioned by Andreas)? Just to make sure that whatever gets merged
>>>>>>>> next
>>>>>>>> will actually fix the issue.
>>>>>>>
>>>>>>>
>>>>>>> Yes sure, it took a while because I had to travel. Confirmed, the
>>>>>>> v4-for-4.5 fix works well for me, on sun7i-a20-olinuxino-lime2:
>>>>>>>
>>>>>>> root at lime2-079f:~# cat /proc/version
>>>>>>> Linux version 4.5.0-598195-598196-v4 (root at lime2-079f) (gcc version
>>>>>>> 4.9.1 (Ubuntu/Linaro 4.9.1-16ubuntu6) ) #1 SMP Wed Mar 16 16:44:22 UTC
>>>>>>> 2016
>>>>>>>
>>>>>>> dmesg:
>>>>>>> [ 8.245273] NET: Registered protocol family 10
>>>>>>> [ 9.297406] RX IPC Checksum Offload disabled
>>>>>>> [ 9.297460] No MAC Management Counters available
>>>>>>> [ 9.297951] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
>>>>>>> [ 16.285658] sun7i-dwmac 1c50000.ethernet eth0: Link is Up -
>>>>>>> 1Gbps/Full - flow control rx/tx
>>>>>>> [ 16.285798] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
>>>>>>>
>>>>>>> The board is connected to my laptop rather than to a switch, so that
>>>>>>> might be where the flow control message comes from (not sure). Anyway
>>>>>>> ethernet works.
>>>>>>
>>>>>>
>>>>>> Cool, many thanks for taking the time to test and report.
>>>>>>
>>>>>> Hopefully Giuseppe will get this merged quickly enough in mainline, and
>>>>>> it should then trickle into a 4.5-stable release (cc-ing stable on
>>>>>> these patches would probably be a good idea, BTW).
>>>>>
>>>>>
>>>>> stmmac is broken on at least Lime2, BananaPi and Cubieboard2 since
>>>>> v4.5 [0], including all five stable releases :(
>>>>
>>>>
>>>> All the A20 platforms are dead, actually.
>>>>
>>>>> The v4.5 patches quoted above are already +4 weeks old, could we
>>>>> please get them into stable?
>>>>
>>>>
>>>> For that, the maintainer would have needed to CC stable, which he
>>>> didn't. I'd expect someone who cares to send these patches to stable.
>>>> It'd be better if the maintainer would do it himself though.
>>>
>>>
>>> sure, I can send the patches to stable (sorry if I missed to add
>>> stable ML on CC).
>>>
>>> Andre, I have not clear if the train of patches actually fix the
>>> issue or if you need my support to fix something else. In that case
>>> I need some input for debugging (e.g. kernel log).
>>
>> Bert already confirmed that those two patches fixes stmmac on his
>> Lime2, so I assume that it fixes the issue for all A20 platforms.
>>
>>> let me know, is it enough to re-send the patches only?
>>
>> Just a resend with cc:stable :)
>
> Not quite. Please read Documentation/stable_kernel_rules.txt, and the
> section that concerns networking patches (and then consult
> Documentation/networking/netdev-FAQ.txt which has all the details).
FWIW, recent 4.6-rc series and 4.6.0 have worked fine for me and the
lime2. Had not tried 4.5.x again.
Best,
-bert
next prev parent reply other threads:[~2016-05-21 15:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 11:19 4.5.0 on sun7i-a20-olinuxino-lime2: libphy: PHY stmmac-0:ffffffff not found (regression from rc7) Bert Lindner
2016-03-16 11:39 ` Marc Zyngier
2016-03-16 12:09 ` Robin Murphy
2016-03-16 13:06 ` Marc Zyngier
2016-03-16 13:10 ` Andreas Färber
2016-03-16 15:10 ` Bert Lindner
2016-03-16 17:42 ` Marc Zyngier
2016-03-16 23:56 ` Bert Lindner
2016-03-17 7:52 ` Marc Zyngier
2016-05-20 5:44 ` Andre Heider
2016-05-20 7:56 ` Marc Zyngier
2016-05-20 8:14 ` Giuseppe CAVALLARO
2016-05-20 10:30 ` Andre Heider
2016-05-20 10:36 ` Marc Zyngier
2016-05-20 10:43 ` Andre Heider
2016-05-21 15:47 ` Bert Lindner [this message]
2016-05-22 9:30 ` Marc Zyngier
2016-05-23 13:28 ` Giuseppe CAVALLARO
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