[OpenWrt-Devel] [PATCH 00/23] add 3.14 kernel support for ar71xx

[Zhao, Gang]

On Sun, 2014-07-27 at 10:55:26 +0800, Zhao, Gang wrote:
> On Sat, 2014-07-26 at 14:33:43 -0400, Paul Blazejowski wrote:
>> no sir! after applying this one liner to my 3.14.13 (instead of the
>> 3.14.12 kernel that Zhao used in his patches) and quick rebuild, my
>> wndr3700v4 will not boot; it shows 2 steady amber lights...
>>
>> so this test fails as well ...next one please! ;P
>>
> I also tried this patch on wr703n, the phy still doesn't do the
> auto-negotiation correctly, cause the host computer always says cable
> unplugged.
>
> Forget my previous saying that the problem is bridge, it's just the
> consequence, since bridge has nothing to do with auto-negotiation. i
> think the problem is phy, just need to figure out how to solve it.
>
The ethtool output is interesting:

root at OpenWrt:/# ethtool --negotiate eth0
Cannot restart autonegotiation: Operation not supported

It seems autonegotiation becomes not supported on 3.14 kernel. Hope it
helps to find the problem. Also:

root at OpenWrt:/# ethtool eth0
Settings for eth0:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Supported pause frame use: No
	Supports auto-negotiation: Yes
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Advertised pause frame use: No
	Advertised auto-negotiation: Yes
	Link partner advertised link modes:  10baseT/Half 10baseT/Full 
	                                     100baseT/Half 100baseT/Full 
	Link partner advertised pause frame use: Symmetric Receive-only
	Link partner advertised auto-negotiation: Yes
	Speed: 100Mb/s
	Duplex: Full
	Port: MII
	PHYAD: 4
	Transceiver: external
	Auto-negotiation: on
	Current message level: 0x000000ff (255)
			       drv probe link timer ifdown ifup rx_err tx_err
	Link detected: no
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