[FS#3309] MikroTik LHG 2: eth0 Link speed not properly reported (fixed at 1000 Mbps)

[OpenWrt Bugs]

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User who did this - rogerpueyo (rogerpueyo) 

Attached to Project - OpenWrt/LEDE Project
Summary - MikroTik LHG 2: eth0 Link speed not properly reported (fixed at 1000 Mbps)
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Baja
Priority - Normal
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Hi,

Given the way the wired network is setup in the MikroTik LHG HB platform DTS file (qca9533_mikrotik_routerboard-lhg-hb):


&eth1 {
	gmac-config {
		device = ;
	};
};


the link speed for the MikroTik LHG 2 is not properly reported at eth0. Instead, it appears as fixed at 1000 Mbps, while swconfig reports the actual speed for port #1:


root at OpenWrt:~# dmesg | grep eth
[    4.335676] ag71xx 1a000000.eth: invalid MAC address, using random address
[    5.098696] ag71xx 1a000000.eth: connected to PHY at fixed-0:00 [uid=00000000, driver=Generic PHY]
[    5.108652] eth0: Atheros AG71xx at 0xba000000, irq 5, mode: gmii
[    5.826229] eth0: link up (1000Mbps/Full duplex)
[    5.838081] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    9.991422] eth0: link down
[   56.170746] eth0: link up (1000Mbps/Full duplex)
[   56.176251] br-lan: port 1(eth0) entered blocking state
[   56.181725] br-lan: port 1(eth0) entered disabled state
[   56.187503] device eth0 entered promiscuous mode
[   56.211269] br-lan: port 1(eth0) entered blocking state
[   56.216705] br-lan: port 1(eth0) entered forwarding state

root at OpenWrt:~# swconfig dev switch0 show
Global attributes:
	enable_vlan: 0
	ar8xxx_mib_poll_interval: 500
	ar8xxx_mib_type: 0
	enable_mirror_rx: 0
	enable_mirror_tx: 0
	mirror_monitor_port: 0
	mirror_source_port: 0
	arl_table: address resolution table
Port 0: MAC de:ad:be:ef:00:00
Port 0: MAC de:ad:be:ef:00:01
Port 1: MAC de:ad:be:ef:00:02

Port 0:
	mib: MIB counters
RxGoodByte  : 61472 (60.0 KiB)
TxByte      : 64515 (63.0 KiB)

	pvid: 0
	link: port:0 link:up speed:1000baseT full-duplex txflow rxflow 
Port 1:
	mib: MIB counters
RxGoodByte  : 64795 (63.2 KiB)
TxByte      : 54979 (53.6 KiB)

	pvid: 0
	link: port:1 link:up speed:10baseT half-duplex auto
Port 2:
	mib: No MIB data
	pvid: 0
	link: port:2 link:down
Port 3:
	mib: No MIB data
	pvid: 0
	link: port:3 link:down
Port 4:
	mib: No MIB data
	pvid: 0
	link: port:4 link:down




Using the following network setup, which is also found in other devices (e.g., MikroTik SXT Lite 5):

&eth0 {
	status = "okay";

	phy-handle = ;

	gmac-config {
		device = ;
		switch-phy-swap = ;
	};
};

&eth1 {
	status = "okay";

	compatible = "syscon", "simple-mfd";
};


eth0 reports the actual link speed:

[    5.087144] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: mii
[    7.827418] eth0: link up (100Mbps/Full duplex)
[    7.832171] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    9.943393] eth0: link down
[   44.416376] br-lan: port 1(eth0) entered blocking state
[   44.421841] br-lan: port 1(eth0) entered disabled state
[   44.427598] device eth0 entered promiscuous mode
[   48.497213] eth0: link up (100Mbps/Full duplex)
[   48.502152] br-lan: port 1(eth0) entered blocking state
[   48.507613] br-lan: port 1(eth0) entered forwarding state
[  111.983480] eth0: link down
[  111.987076] br-lan: port 1(eth0) entered disabled state
[  114.033204] eth0: link up (10Mbps/Half duplex)
[  114.038061] br-lan: port 1(eth0) entered blocking state
[  114.043522] br-lan: port 1(eth0) entered forwarding state
[  117.103480] eth0: link down
[  117.107070] br-lan: port 1(eth0) entered disabled state
[  118.129228] eth0: link up (100Mbps/Full duplex)
[  118.134175] br-lan: port 1(eth0) entered blocking state
[  118.139631] br-lan: port 1(eth0) entered forwarding state
[  120.176348] eth0: link down
[  120.180095] br-lan: port 1(eth0) entered disabled state
[  122.225217] eth0: link up (100Mbps/Full duplex)
[  122.230159] br-lan: port 1(eth0) entered blocking state
[  122.235615] br-lan: port 1(eth0) entered forwarding state


as the switch is not used:

root at OpenWrt:~# swconfig dev switch0 show
Global attributes:
	enable_vlan: 0
	ar8xxx_mib_poll_interval: 500
	ar8xxx_mib_type: 0
	enable_mirror_rx: 0
	enable_mirror_tx: 0
	mirror_monitor_port: 0
	mirror_source_port: 0
	arl_table: address resolution table

Port 0:
	mib: No MIB data
	pvid: 0
	link: port:0 link:up speed:1000baseT full-duplex txflow rxflow 
Port 1:
	mib: No MIB data
	pvid: 0
	link: port:1 link:down
Port 2:
	mib: No MIB data
	pvid: 0
	link: port:2 link:down
Port 3:
	mib: No MIB data
	pvid: 0
	link: port:3 link:down
Port 4:
	mib: No MIB data
	pvid: 0
	link: port:4 link:down


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3309

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