JMPHY(4) Device Drivers Manual JMPHY(4)

jmphy
JMicron JMP202/JMP211 10/100/Gigabit Ethernet PHY

jmphy* at mii?

The jmphy driver supports the JMicron JMP202 10/100 and JMP211 10/100/Gigabit Ethernet PHYs.

ifmedia(4), intro(4), jme(4), mii(4), ifconfig(8)

The jmphy device driver first appeared in OpenBSD 4.5 and NetBSD 9.0.

The jmphy driver was written by Pyun YongHyeon for FreeBSD and ported to OpenBSD by Jonathan Gray <jsg@openbsd.org> and then ported to NetBSD by Masanobu SAITOH.

It the media is set to gigabit speed, it may not link up or take a very long time to set the link up. It depends on the link partner.
October 30, 2019 NetBSD 10.0