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bdbdac7649
linux_dsm_epyc7002/Documentation/networking
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Oleksij Rempel bdbdac7649 ethtool: provide UAPI for PHY master/slave configuration. 
This UAPI is needed for BroadR-Reach 100BASE-T1 devices. Due to lack of
auto-negotiation support, we needed to be able to configure the
MASTER-SLAVE role of the port manually or from an application in user
space.

The same UAPI can be used for 1000BASE-T or MultiGBASE-T devices to
force MASTER or SLAVE role. See IEEE 802.3-2018:
22.2.4.3.7 MASTER-SLAVE control register (Register 9)
22.2.4.3.8 MASTER-SLAVE status register (Register 10)
40.5.2 MASTER-SLAVE configuration resolution
45.2.1.185.1 MASTER-SLAVE config value (1.2100.14)
45.2.7.10 MultiGBASE-T AN control 1 register (Register 7.32)

The MASTER-SLAVE role affects the clock configuration:

-------------------------------------------------------------------------------
When the  PHY is configured as MASTER, the PMA Transmit function shall
source TX_TCLK from a local clock source. When configured as SLAVE, the
PMA Transmit function shall source TX_TCLK from the clock recovered from
data stream provided by MASTER.

iMX6Q                     KSZ9031                XXX
------\                /-----------\        /------------\
      |                |           |        |            |
 MAC  |<----RGMII----->| PHY Slave |<------>| PHY Master |
      |<--- 125 MHz ---+-<------/  |        | \          |
------/                \-----------/        \------------/
                                               ^
                                                \-TX_TCLK

-------------------------------------------------------------------------------

Since some clock or link related issues are only reproducible in a
specific MASTER-SLAVE-role, MAC and PHY configuration, it is beneficial
to provide generic (not 100BASE-T1 specific) interface to the user space
for configuration flexibility and trouble shooting.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-06 17:45:45 -07:00
..
caif docs: networking: convert caif files to ReST 2020-04-28 14:38:38 -07:00
device_drivers docs: networking: device drivers: convert toshiba/spider_net.txt to ReST 2020-05-01 12:24:43 -07:00
devlink docs: devlink: clarify the scope of snapshot id 2020-05-04 11:58:31 -07:00
dsa Documentation: net: dsa: sja1105: Remove text about taprio base-time limitation 2019-12-30 20:14:27 -08:00
mac80211_hwsim docs: net: convert two README files to ReST format 2019-07-31 13:31:56 -06:00
6lowpan.rst docs: networking: convert 6lowpan.txt to ReST 2020-02-28 14:52:36 +01:00
6pack.rst docs: networking: convert 6pack.txt to ReST 2020-04-28 14:38:38 -07:00
af_xdp.rst xsk: Extend documentation for Rx|Tx-only sockets and shared umems 2019-11-10 19:30:46 -08:00
alias.rst docs: networking: Convert alias.txt to rst 2018-07-18 15:28:27 -07:00
altera_tse.rst docs: networking: convert altera_tse.txt to ReST 2020-04-28 14:38:38 -07:00
arcnet-hardware.rst docs: networking: arcnet-hardware.rst: don't duplicate chapter names 2020-05-01 12:24:43 -07:00
arcnet.rst docs: networking: convert arcnet.txt to ReST 2020-04-28 14:38:38 -07:00
atm.rst docs: networking: convert atm.txt to ReST 2020-04-28 14:38:38 -07:00
ax25.rst docs: networking: convert ax25.txt to ReST 2020-04-28 14:38:38 -07:00
bareudp.rst net: Special handling for IP & MPLS. 2020-02-24 13:31:42 -08:00
batman-adv.rst batman-adv: Drop documentation about sysfs files 2019-03-25 09:31:35 +01:00
baycom.rst docs: networking: convert baycom.txt to ReST 2020-04-28 14:38:38 -07:00
bonding.rst docs: networking: convert multiqueue.txt to ReST 2020-04-30 12:56:36 -07:00
bridge.rst docs: networking: Convert bridge.txt to rst 2018-07-18 15:28:27 -07:00
can_ucan_protocol.rst can: ucan: add driver for Theobroma Systems UCAN devices 2018-07-27 10:40:16 +02:00
can.rst docs: networking: convert netdevices.txt to ReST 2020-04-30 12:56:36 -07:00
cdc_mbim.rst docs: networking: convert cdc_mbim.txt to ReST 2020-04-28 14:38:39 -07:00
checksum-offloads.rst docs: networking: convert netdev-features.txt to ReST 2020-04-30 12:56:36 -07:00
cops.rst docs: networking: convert cops.txt to ReST 2020-04-28 14:38:39 -07:00
cxacru-cf.py
cxacru.rst docs: networking: convert cxacru.txt to ReST 2020-04-28 14:38:39 -07:00
dccp.rst docs: networking: convert dccp.txt to ReST 2020-04-28 14:38:39 -07:00
dctcp.rst docs: networking: convert dctcp.txt to ReST 2020-04-28 14:38:39 -07:00
decnet.rst docs: networking: convert decnet.txt to ReST 2020-04-28 14:39:45 -07:00
defza.rst docs: networking: convert defza.txt to ReST 2020-04-28 14:39:46 -07:00
dns_resolver.rst docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
driver.rst docs: networking: convert driver.txt to ReST 2020-04-28 14:39:46 -07:00
eql.rst docs: networking: convert eql.txt to ReST 2020-04-28 14:39:46 -07:00
ethtool-netlink.rst ethtool: provide UAPI for PHY master/slave configuration. 2020-05-06 17:45:45 -07:00
failover.rst net: Introduce generic failover module 2018-05-28 22:59:54 -04:00
fib_trie.rst docs: networking: convert fib_trie.txt to ReST 2020-04-28 14:39:46 -07:00
filter.rst docs: networking: convert filter.txt to ReST 2020-04-28 14:39:46 -07:00
fore200e.rst docs: networking: convert fore200e.txt to ReST 2020-04-28 14:39:46 -07:00
framerelay.rst docs: networking: convert framerelay.txt to ReST 2020-04-28 14:39:46 -07:00
gen_stats.rst docs: networking: convert gen_stats.txt to ReST 2020-04-28 14:39:46 -07:00
generic_netlink.rst docs: networking: convert generic_netlink.txt to ReST 2020-04-28 14:39:46 -07:00
generic-hdlc.rst docs: networking: convert generic-hdlc.txt to ReST 2020-04-28 14:39:46 -07:00
gtp.rst docs: networking: convert gtp.txt to ReST 2020-04-28 14:39:46 -07:00
hinic.rst docs: networking: convert hinic.txt to ReST 2020-04-28 14:39:46 -07:00
ieee802154.rst doc: net: ieee802154: introduce IEEE 802.15.4 subsystem doc in rst style 2019-03-01 17:03:00 -08:00
ila.rst docs: networking: convert ila.txt to ReST 2020-04-28 14:39:47 -07:00
index.rst net: docs: add page_pool.rst to index.rst 2020-05-01 12:24:43 -07:00
ip_dynaddr.rst docs: networking: convert ip_dynaddr.txt to ReST 2020-04-28 14:39:47 -07:00
ip-sysctl.rst ipv6: Implement draft-ietf-6man-rfc4941bis 2020-05-06 17:00:02 -07:00
ipddp.rst docs: networking: convert ipddp.txt to ReST 2020-04-28 14:39:47 -07:00
iphase.rst docs: networking: convert iphase.txt to ReST 2020-04-28 14:39:47 -07:00
ipsec.rst docs: networking: convert ipsec.txt to ReST 2020-04-28 14:39:47 -07:00
ipv6.rst docs: networking: convert ipv6.txt to ReST 2020-04-28 14:40:18 -07:00
ipvlan.rst docs: networking: convert ipvlan.txt to ReST 2020-04-28 14:40:18 -07:00
ipvs-sysctl.rst docs: networking: convert ipvs-sysctl.txt to ReST 2020-04-28 14:40:18 -07:00
j1939.rst can: j1939: fix address claim code example 2019-12-08 11:52:02 +01:00
kapi.rst sfp: add documentation for kernel APIs 2017-12-05 11:16:19 -05:00
kcm.rst docs: networking: convert kcm.txt to ReST 2020-04-28 14:40:19 -07:00
l2tp.rst docs: networking: convert l2tp.txt to ReST 2020-04-30 12:56:35 -07:00
lapb-module.rst docs: networking: convert lapb-module.txt to ReST 2020-04-30 12:56:35 -07:00
ltpc.rst docs: networking: convert ltpc.txt to ReST 2020-04-30 12:56:36 -07:00
mac80211-auth-assoc-deauth.txt
mac80211-injection.rst docs: networking: convert radiotap-headers.txt to ReST 2020-04-30 12:56:37 -07:00
mpls-sysctl.rst docs: networking: convert mpls-sysctl.txt to ReST 2020-04-30 12:56:36 -07:00
msg_zerocopy.rst doc: fix link to MSG_ZEROCOPY patchset 2019-03-18 09:50:21 -07:00
multiqueue.rst docs: networking: convert multiqueue.txt to ReST 2020-04-30 12:56:36 -07:00
net_dim.rst docs: networking: add full DIM API 2020-04-10 18:11:04 -07:00
net_failover.rst docs: networking: net_failover: Fix a few typos 2020-03-03 16:07:02 -08:00
netconsole.rst docs: networking: convert netconsole.txt to ReST 2020-04-30 12:56:36 -07:00
netdev-FAQ.rst doc/net: Update git https URLs in netdev-FAQ documentation 2020-01-03 12:33:54 -08:00
netdev-features.rst docs: networking: convert netdev-features.txt to ReST 2020-04-30 12:56:36 -07:00
netdevices.rst docs: networking: convert netdevices.txt to ReST 2020-04-30 12:56:36 -07:00
netfilter-sysctl.rst docs: networking: convert netfilter-sysctl.txt to ReST 2020-04-30 12:56:36 -07:00
netif-msg.rst docs: networking: convert netif-msg.txt to ReST 2020-04-30 12:56:36 -07:00
nf_conntrack-sysctl.rst docs: networking: convert nf_conntrack-sysctl.txt to ReST 2020-04-30 12:56:36 -07:00
nf_flowtable.rst docs: networking: convert nf_flowtable.txt to ReST 2020-04-30 12:56:36 -07:00
nfc.rst docs: networking: nfc: change to rst format 2019-11-23 11:00:19 -08:00
openvswitch.rst docs: networking: convert openvswitch.txt to ReST 2020-04-30 12:56:36 -07:00
operstates.rst docs: networking: convert operstates.txt to ReST 2020-04-30 12:56:37 -07:00
packet_mmap.rst docs: networking: convert timestamping.txt to ReST 2020-04-30 12:56:38 -07:00
page_pool.rst net: page_pool: Add documentation on page_pool API 2020-02-21 08:13:30 -08:00
phonet.rst docs: networking: convert phonet.txt to ReST 2020-04-30 12:56:37 -07:00
phy.rst docs: networking: phy: Rephrase paragraph for clarity 2020-02-23 20:42:47 -08:00
pktgen.rst docs: networking: convert pktgen.txt to ReST 2020-04-30 12:56:37 -07:00
plip.rst docs: networking: convert PLIP.txt to ReST 2020-04-30 12:56:37 -07:00
ppp_generic.rst docs: networking: convert ppp_generic.txt to ReST 2020-04-30 12:56:37 -07:00
proc_net_tcp.rst docs: networking: convert proc_net_tcp.txt to ReST 2020-04-30 12:56:37 -07:00
radiotap-headers.rst docs: networking: convert radiotap-headers.txt to ReST 2020-04-30 12:56:37 -07:00
ray_cs.rst docs: networking: convert ray_cs.txt to ReST 2020-04-30 12:56:37 -07:00
rds.rst docs: networking: convert rds.txt to ReST 2020-04-30 12:56:37 -07:00
regulatory.rst docs: networking: convert regulatory.txt to ReST 2020-04-30 12:56:37 -07:00
rxrpc.rst docs: networking: convert rxrpc.txt to ReST 2020-04-30 12:56:38 -07:00
scaling.rst doc: networking: integrate scaling document into doc tree 2019-01-20 19:10:49 -07:00
sctp.rst docs: networking: convert sctp.txt to ReST 2020-04-30 12:56:38 -07:00
secid.rst docs: networking: convert secid.txt to ReST 2020-04-30 12:56:38 -07:00
seg6-sysctl.rst docs: networking: convert seg6-sysctl.txt to ReST 2020-04-30 12:56:38 -07:00
segmentation-offloads.rst networking: : fix typos in code comments 2019-05-20 20:24:34 -04:00
sfp-phylink.rst doc: sfp-phylink: correct code indentation 2020-03-03 15:33:55 -08:00
skfp.rst docs: networking: convert skfp.txt to ReST 2020-04-30 12:56:38 -07:00
snmp_counter.rst docs: networking: convert ip-sysctl.txt to ReST 2020-04-28 14:40:18 -07:00
strparser.rst docs: networking: convert strparser.txt to ReST 2020-04-30 12:56:38 -07:00
switchdev.rst docs: networking: convert switchdev.txt to ReST 2020-04-30 12:56:38 -07:00
tc-actions-env-rules.rst docs: networking: convert tc-actions-env-rules.txt to ReST 2020-04-30 12:56:38 -07:00
tcp-thin.rst docs: networking: convert tcp-thin.txt to ReST 2020-04-30 12:56:38 -07:00
team.rst docs: networking: convert team.txt to ReST 2020-04-30 12:56:38 -07:00
timestamping.rst docs: networking: convert timestamping.txt to ReST 2020-04-30 12:56:38 -07:00
tls-offload-layers.svg Documentation: add TLS offload documentation 2019-05-22 12:18:20 -07:00
tls-offload-reorder-bad.svg Documentation: add TLS offload documentation 2019-05-22 12:18:20 -07:00
tls-offload-reorder-good.svg Documentation: add TLS offload documentation 2019-05-22 12:18:20 -07:00
tls-offload.rst Documentation: TLS: Add missing counter description 2019-11-05 18:34:06 -08:00
tls.rst net/tls: add TlsDeviceRxResync statistic 2019-10-05 16:29:00 -07:00
tproxy.rst docs: networking: convert tproxy.txt to ReST 2020-04-30 12:56:38 -07:00
tuntap.rst docs: networking: convert tuntap.txt to ReST 2020-05-01 12:24:40 -07:00
udplite.rst docs: networking: convert udplite.txt to ReST 2020-05-01 12:24:40 -07:00
vrf.rst docs: networking: convert vrf.txt to ReST 2020-05-01 12:24:40 -07:00
vxlan.rst docs: networking: convert vxlan.txt to ReST 2020-05-01 12:24:40 -07:00
x25-iface.rst docs: networking: convert x25-iface.txt to ReST 2020-05-01 12:24:40 -07:00
x25.rst docs: networking: convert x25.txt to ReST 2020-05-01 12:24:40 -07:00
xfrm_device.rst docs: networking: convert xfrm_device.txt to ReST 2020-05-01 12:24:40 -07:00
xfrm_proc.rst docs: networking: convert xfrm_proc.txt to ReST 2020-05-01 12:24:40 -07:00
xfrm_sync.rst docs: networking: convert xfrm_sync.txt to ReST 2020-05-01 12:24:41 -07:00
xfrm_sysctl.rst docs: networking: convert xfrm_sysctl.txt to ReST 2020-05-01 12:24:41 -07:00
z8530book.rst docs-rst: convert scsi DocBook to ReST 2017-05-16 08:44:15 -03:00
z8530drv.rst docs: networking: convert z8530drv.txt to ReST 2020-05-01 12:24:41 -07:00