RE: [PATCH] net: fec: hard phy reset on open

2016-10-24 Thread Andy Duan
From: Manfred Schlaegl Sent: Monday, October 24, 2016 10:43 PM > To: Andy Duan > Cc: netdev@vger.kernel.org; linux-ker...@vger.kernel.org > Subject: Re: [PATCH] net: fec: hard phy reset on open > > On 2016-10-24 16:03, Andy Duan wrote: > > From: manfred.schla...@gm

RE: [PATCH] net: fec: hard phy reset on open

2016-10-24 Thread Andy Duan
From: manfred.schla...@gmx.at Sent: Monday, October 24, 2016 5:26 PM > To: Andy Duan > Cc: netdev@vger.kernel.org; linux-ker...@vger.kernel.org > Subject: [PATCH] net: fec: hard phy reset on open > > We have seen some problems with auto negotiation on i.MX6 using LAN8720, &g

Re: [PATCH] net: fec: hard phy reset on open

2016-10-24 Thread Manfred Schlaegl
On 2016-10-24 16:03, Andy Duan wrote: > From: manfred.schla...@gmx.at Sent: Monday, > October 24, 2016 5:26 PM >> To: Andy Duan >> Cc: netdev@vger.kernel.org; linux-ker...@vger.kernel.org >> Subject: [PATCH] net: fec: hard phy reset on open >> >>

[PATCH] net: fec: hard phy reset on open

2016-10-24 Thread Manfred Schlaegl
We have seen some problems with auto negotiation on i.MX6 using LAN8720, after interface down/up. In our configuration, the ptp clock is used externally as reference clock for the phy. Some phys (e.g. LAN8720) needs a stable clock while and after hard reset. Before this patch, the driver disabled