Re: Handling an Extra Signal at PHY Reset

2019-02-27 Thread Paul Kocialkowski
Hi Andrew, On Thu, 2019-02-21 at 15:04 +0100, Andrew Lunn wrote: > > I can also confirm that it does not prevent contacting the PHY on the > > MDIO bus, contrary to what I have stated previously. > > O.K, so wrong voltage does not matter, you can still probe the PHY. > > Ignore the switch. Use a

Re: Handling an Extra Signal at PHY Reset

2019-02-21 Thread Andrew Lunn
> I can also confirm that it does not prevent contacting the PHY on the > MDIO bus, contrary to what I have stated previously. O.K, so wrong voltage does not matter, you can still probe the PHY. Ignore the switch. Use a pin hog to set the GPIO to the disabled state. And set the voltage using the

Re: Handling an Extra Signal at PHY Reset

2019-02-21 Thread Paul Kocialkowski
Hi Florian, On Tue, 2019-02-19 at 08:07 -0800, Florian Fainelli wrote: > > On February 19, 2019 1:14:20 AM PST, Paul Kocialkowski > wrote: > > Hi, > > > > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > > CONFIG pin that must be connected to one of the other pins of t

Re: Handling an Extra Signal at PHY Reset

2019-02-21 Thread Paul Kocialkowski
Hi Andrew, On Thu, 2019-02-21 at 02:49 +0100, Andrew Lunn wrote: > On Tue, Feb 19, 2019 at 10:14:20AM +0100, Paul Kocialkowski wrote: > > Hi, > > > > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > > CONFIG pin that must be connected to one of the other pins of the PHY >

Re: Handling an Extra Signal at PHY Reset

2019-02-20 Thread Andrew Lunn
On Tue, Feb 19, 2019 at 10:14:20AM +0100, Paul Kocialkowski wrote: > Hi, > > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > CONFIG pin that must be connected to one of the other pins of the PHY > to configure the LSB of the PHY address as well as I/O voltages (see > sect

Re: Handling an Extra Signal at PHY Reset

2019-02-20 Thread Thomas Petazzoni
On Tue, 19 Feb 2019 14:36:29 +0100 Andrew Lunn wrote: > This seems like an odd design. I've normally seen weak pull up/down > resistors, not a switch, so i'm wondering why it is designed like > this. The key point here is that this "CONFIG" pin of the PHY is used during reset to configure the PH

Re: Handling an Extra Signal at PHY Reset

2019-02-19 Thread Florian Fainelli
On February 19, 2019 1:14:20 AM PST, Paul Kocialkowski wrote: >Hi, > >We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a >CONFIG pin that must be connected to one of the other pins of the PHY >to configure the LSB of the PHY address as well as I/O voltages (see >section 2.

Re: Handling an Extra Signal at PHY Reset

2019-02-19 Thread Andrew Lunn
> I think the reason why we need to deal with the CONFIG pin is more > about setting the correct I/O voltage than the PHY address (it just > happens that the CONFIG pin configures both at once). Hi Paul I don't have the datasheet... What I/O voltages are we talking about? Is the device addressab

Re: Handling an Extra Signal at PHY Reset

2019-02-19 Thread Paul Kocialkowski
Hi Andrew, On Tue, 2019-02-19 at 14:36 +0100, Andrew Lunn wrote: > On Tue, Feb 19, 2019 at 10:14:20AM +0100, Paul Kocialkowski wrote: > > Hi, > > > > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > > CONFIG pin that must be connected to one of the other pins of the PHY >

Re: Handling an Extra Signal at PHY Reset

2019-02-19 Thread Andrew Lunn
On Tue, Feb 19, 2019 at 10:14:20AM +0100, Paul Kocialkowski wrote: > Hi, > > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > CONFIG pin that must be connected to one of the other pins of the PHY > to configure the LSB of the PHY address as well as I/O voltages (see > sect

Re: Handling an Extra Signal at PHY Reset

2019-02-19 Thread Paul Kocialkowski
Hi, On Tue, 2019-02-19 at 10:36 +0100, Thomas Petazzoni wrote: > Hello Paul, > > On Tue, 19 Feb 2019 10:14:20 +0100 > Paul Kocialkowski wrote: > > > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > > CONFIG pin that must be connected to one of the other pins of the PHY

Re: Handling an Extra Signal at PHY Reset

2019-02-19 Thread Thomas Petazzoni
Hello Paul, On Tue, 19 Feb 2019 10:14:20 +0100 Paul Kocialkowski wrote: > We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a > CONFIG pin that must be connected to one of the other pins of the PHY > to configure the LSB of the PHY address as well as I/O voltages (see > secti

Handling an Extra Signal at PHY Reset

2019-02-19 Thread Paul Kocialkowski
Hi, We are dealing with an Ethernet PHY (Marvell 88E1512) that comes with a CONFIG pin that must be connected to one of the other pins of the PHY to configure the LSB of the PHY address as well as I/O voltages (see section 2.18.1 Hardware Configuration of the datasheet). It must be connected "soon