[BUG] The genet is not working

[BUG] The genet is not working

[Jaedon Shin]

Hi,

The genet of Broadcom MIPS 40nm platforms with internal PHY isn't working
after v4.20-rc1, but 28nm ARM platforms or external PHY is working.

[    1.064000] bcmgenet 10430000.ethernet: configuring instance for internal PHY
[    1.068000] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    1.196000] bcmgenet 10430000.ethernet eth0: Link is Down
[   11.076000] Waiting up to 110 more seconds for network.
[   21.088000] Waiting up to 100 more seconds for network.
[   31.100000] Waiting up to 90 more seconds for network.
[   41.112000] Waiting up to 80 more seconds for network.
[   51.124000] Waiting up to 70 more seconds for network.
[   61.136000] Waiting up to 60 more seconds for network.
[   71.148000] Waiting up to 50 more seconds for network.
[   81.160000] Waiting up to 40 more seconds for network.
[   91.172000] Waiting up to 30 more seconds for network.
[  101.184000] Waiting up to 20 more seconds for network.
[  111.196000] Waiting up to 10 more seconds for network.

I tried bisecting for this between v4.19 and v4.20-rc1, I found a problematic
commit 6e2d85ec0559 ("net: phy: Stop with excessive soft reset").

Thanks,
Jaedon

Re: [BUG] The genet is not working

[Florian Fainelli]

On 1/23/19 8:17 PM, Jaedon Shin wrote:
> Hi,
> 
> The genet of Broadcom MIPS 40nm platforms with internal PHY isn't working
> after v4.20-rc1, but 28nm ARM platforms or external PHY is working.
> 
> [    1.064000] bcmgenet 10430000.ethernet: configuring instance for internal PHY
> [    1.068000] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
> [    1.196000] bcmgenet 10430000.ethernet eth0: Link is Down
> [   11.076000] Waiting up to 110 more seconds for network.
> [   21.088000] Waiting up to 100 more seconds for network.
> [   31.100000] Waiting up to 90 more seconds for network.
> [   41.112000] Waiting up to 80 more seconds for network.
> [   51.124000] Waiting up to 70 more seconds for network.
> [   61.136000] Waiting up to 60 more seconds for network.
> [   71.148000] Waiting up to 50 more seconds for network.
> [   81.160000] Waiting up to 40 more seconds for network.
> [   91.172000] Waiting up to 30 more seconds for network.
> [  101.184000] Waiting up to 20 more seconds for network.
> [  111.196000] Waiting up to 10 more seconds for network.
> 
> I tried bisecting for this between v4.19 and v4.20-rc1, I found a problematic
> commit 6e2d85ec0559 ("net: phy: Stop with excessive soft reset").

Thanks Jaedon, we will try to come up with an appropriate fix for that
problem.
-- 
Florian