[FS#3832] [Regression] xrx200 switch affecting AVM Fritz!Box 7362SL

[OpenWrt Bugs]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Matthias Walther (MPW) 

Attached to Project - OpenWrt/LEDE Project
Summary - [Regression] xrx200 switch affecting AVM Fritz!Box 7362SL
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - The 7362sl by AVM has two gigabit ports labeled 1+2 and two fast ethernet ports labled 3+4.

They all used to work, but with OpenWrt 21.02.0 only the two gigabit ports work. Port 3+4 are dead. Linked (layer1) can be established, no layer2 or higher traffic possible.

OpenWrt 19.07.7 Kernel 4.14.221 supports ports 3 + 4
Openwrt 21.02.0-rc1 Kernel 5.4.111 ports 3 + 4 are dead

```
root at OpenWrt:~# dmesg|grep -A5 -B5 PHY
[    0.163028] pinctrl core: initialized pinctrl subsystem
[    0.170653] NET: Registered protocol family 16
[    0.183980] dcdc-xrx200 1f106a00.dcdc: Core Voltage : 1016 mV
[    0.198588] pinctrl-xway 1e100b10.pinmux: Init done
[    0.205140] dma-xway 1e104100.dma: Init done - hw rev: 7, ports: 7, channels: 28
[    0.216895] pcie-xrx200 1d900000.pcie: failed to get the PCIe PHY
[    0.265910] usbcore: registered new interface driver usbfs
[    0.271499] usbcore: registered new interface driver hub
[    0.276869] usbcore: registered new device driver usb
[    0.282522] workqueue: max_active 576 requested for napi_workq is out of range, clamping between 1 and 512
[    0.294467] clocksource: Switched to clocksource MIPS
--
[    0.708199] NET: Registered protocol family 10
[    0.715876] Segment Routing with IPv6
[    0.718218] NET: Registered protocol family 17
[    0.722769] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    0.735555] 8021q: 802.1Q VLAN Support v1.8
[    0.746142] pcie-xrx200 1d900000.pcie: failed to get the PCIe PHY
[    0.859313] libphy: lantiq,xrx200-mdio: probed
[    0.869051] net-xrx200: invalid MAC, using random
[    0.872575] Atheros 8030 ethernet 0:00: attached PHY driver [Atheros 8030 ethernet] (mii_bus:phy_addr=0:00, irq=POLL)
[    0.883256] Atheros 8030 ethernet 0:01: attached PHY driver [Atheros 8030 ethernet] (mii_bus:phy_addr=0:01, irq=POLL)
[    0.894242] Intel XWAY PHY11G (xRX v1.2 integrated) 0:11: attached PHY driver [Intel XWAY PHY11G (xRX v1.2 integrated)] (mii_bus:phy_addr=0:11, irq=POLL)
[    0.907971] Intel XWAY PHY11G (xRX v1.2 integrated) 0:13: attached PHY driver [Intel XWAY PHY11G (xRX v1.2 integrated)] (mii_bus:phy_addr=0:13, irq=POLL)
[    1.046546] PCI host bridge /fpi at 10000000/pcie at d900000 ranges:
[    1.051221] PCI host bridge to bus 0000:00
[    1.055083] pci_bus 0000:00: root bus resource [mem 0x1c000000-0x1cffffff]
[    1.061969] pci_bus 0000:00: root bus resource [io  0x1d800000-0x1d8fffff]
[    1.068840] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
```

Notably might be the line ”failed to get the PCIe PHY“ which does not appear in 19.07.7.

As I didn't notice any changes regarding this particular device model, it might be a problem with the kernel driver for the switch module.


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3832

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