On Thu, Aug 10, 2017 at 8:20 AM, Andrew Lunn <andrew@xxxxxxx> wrote: > On Wed, Aug 09, 2017 at 03:47:34PM -0700, Florian Fainelli wrote: >> On August 9, 2017 5:10:30 AM PDT, David Wu <david.wu@xxxxxxxxxxxxxx> wrote: >> >Add the documentation for internal phy. A boolean property >> >indicates that a internal phy will be used. >> > >> >Signed-off-by: David Wu <david.wu@xxxxxxxxxxxxxx> >> >--- >> > Documentation/devicetree/bindings/net/phy.txt | 3 +++ >> > 1 file changed, 3 insertions(+) >> > >> >diff --git a/Documentation/devicetree/bindings/net/phy.txt >> >b/Documentation/devicetree/bindings/net/phy.txt >> >index b558576..942c892 100644 >> >--- a/Documentation/devicetree/bindings/net/phy.txt >> >+++ b/Documentation/devicetree/bindings/net/phy.txt >> >@@ -52,6 +52,9 @@ Optional Properties: >> > Mark the corresponding energy efficient ethernet mode as broken and >> > request the ethernet to stop advertising it. >> > >> >+- phy-is-internal: If set, indicates that phy will connect to the MAC >> >as a >> >+ internal phy. >> >> Something along the lines of: >> >> If set, indicates that the PHY is integrated into the same physical package as the Ethernet MAC. > > Hi Florian, David. > > I'm happy with the property name. But i think the text needs more > description. We deal with Ethernet switches with integrated PHYs. Yet > for us, this property is unneeded. > > Seeing this property means some bit of software needs to ensure the > internal PHY should be used, when given the choice between an internal > and external PHY. So i would say something like: > > If set, indicates that the PHY is integrated into the same > physical package as the Ethernet MAC. If needed, muxers should be > configured to ensure the internal PHY is used. The absence of this > property indicates the muxers should be configured so that the > external PHY is used. > > This last part is important. If the bootloader has set the internal > PHY to be used, you need to reset it. Otherwise we are going to get > into a mess sometime later and need to add a phy-is-external property. Ack. One other thing. We need to fix our (sunxi) binding which is already in 4.13-rc1. We'd like to see this new property in netdev, i.e. merged for 4.13, so we can use it. Thanks ChenYu -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
