[FS#936] archer c50 - broken 5GHz radio

Sat Jul 29 02:37:02 PDT 2017

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

User who did this - nopnopnop (nopnopnop) 

Attached to Project - LEDE Project
Summary - archer c50 - broken 5GHz radio
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - The device is TP-Link Archer C50.
The LEDE version is: LEDE Reboot SNAPSHOT r4650-5d7e23f

How to reproduce:
1 compile LEDE for rampis, Archer C50
2 boot the device
3 5 GHz radio doesn't work

[    0.000000] Linux version 4.9.40 (wrt at 3ea47871fe5c) (gcc version 5.4.0 (LEDE GCC 5.4.0 r4650-5d7e23f) ) #0 Sat Jul 29 07:24:32 2017
[    0.000000] Board has DDR2
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7620A ver:2 eco:6
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019650 (MIPS 24KEc)
[    0.000000] MIPS: machine is TP-Link Archer C50
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] On node 0 totalpages: 16384
[    0.000000] free_area_init_node: node 0, pgdat 803f6ef4, node_mem_map 81000020
[    0.000000]   Normal zone: 128 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 16384 pages, LIFO batch:3
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
[    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Writing ErrCtl register=0007fb00
[    0.000000] Readback ErrCtl register=0007fb00
[    0.000000] Memory: 60424K/65536K available (3152K kernel code, 156K rwdata, 756K rodata, 152K init, 216K bss, 5112K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:256
[    0.000000] CPU Clock: 580MHz
[    0.000000] clocksource: systick: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 583261500 ns
[    0.000000] systick: enable autosleep mode
[    0.000000] systick: running - mult: 214748, shift: 32
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6590553264 ns
[    0.000012] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
[    0.007578] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[    0.070070] pid_max: default: 32768 minimum: 301
[    0.074687] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.081063] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.094852] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.104396] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.110358] pinctrl core: initialized pinctrl subsystem
[    0.116064] NET: Registered protocol family 16
[    0.454267] mt7620-pci 10140000.pcie: MT7620 PPLL unlock
[    0.459410] mt7620-pci: probe of 10140000.pcie failed with error -1
[    0.478719] rt2880_gpio 10000600.gpio: registering 24 gpios
[    0.484170] rt2880_gpio 10000600.gpio: registering 24 irq handlers
[    0.490501] rt2880_gpio 10000638.gpio: registering 16 gpios
[    0.495922] rt2880_gpio 10000638.gpio: registering 16 irq handlers
[    0.502158] rt2880_gpio 10000660.gpio: registering 32 gpios
[    0.507566] rt2880_gpio 10000660.gpio: registering 32 irq handlers
[    0.513805] rt2880_gpio 10000688.gpio: registering 1 gpios
[    0.519130] rt2880_gpio 10000688.gpio: registering 1 irq handlers
[    0.529008] clocksource: Switched to clocksource systick
[    0.535464] NET: Registered protocol family 2
[    0.540614] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.547339] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.553563] TCP: Hash tables configured (established 1024 bind 1024)
[    0.559787] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.565411] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.571774] NET: Registered protocol family 1
[    0.575966] PCI: CLS 0 bytes, default 32
[    0.578225] rt-timer 10000100.timer: maximum frequency is 1220Hz
[    0.584933] Crashlog allocated RAM at address 0x3f00000
[    0.591137] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.605708] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.611355] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.629371] io scheduler noop registered
[    0.633116] io scheduler deadline registered (default)
[    0.638327] ralink-usb-phy usbphy: invalid resource
[    0.643673] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[    0.650977] console [ttyS0] disabled
[    0.654428] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 20, base_baud = 2500000) is a Palmchip BK-3103
[    0.664105] console [ttyS0] enabled
[    0.671135] bootconsole [early0] disabled
[    0.683501] spi spi0.0: force spi mode3
[    0.688192] m25p80 spi0.0: s25fl064k (8192 Kbytes)
[    0.693197] 6 ofpart partitions found on MTD device spi0.0
[    0.698792] Creating 6 MTD partitions on "spi0.0":
[    0.703703] 0x000000000000-0x000000020000 : "u-boot"
[    0.710511] 0x000000020000-0x0000007c0000 : "firmware"
[    1.713178] 2 tplink-fw partitions found on MTD device firmware
[    1.719267] 0x000000020000-0x00000016b31c : "kernel"
[    1.725969] 0x00000016b31c-0x0000007c0000 : "rootfs"
[    1.732917] mtd: device 3 (rootfs) set to be root filesystem
[    1.739333] 1 squashfs-split partitions found on MTD device rootfs
[    1.745662] 0x0000003fb000-0x0000007c0000 : "rootfs_data"
[    1.752876] 0x0000007c0000-0x0000007d0000 : "config"
[    1.759826] 0x0000007d0000-0x0000007e0000 : "rom"
[    1.766443] 0x0000007e0000-0x0000007f0000 : "romfile"
[    1.773514] 0x0000007f0000-0x000000800000 : "radio"
[    1.781045] libphy: Fixed MDIO Bus: probed
[    1.787871] gsw: setting port4 to ephy mode
[    1.792232] mtk_soc_eth 10100000.ethernet eth0 (uninitialized): port 3 link up (100Mbps/Full duplex)
[    1.802707] mtk_soc_eth 10100000.ethernet: loaded mt7620 driver
[    1.809654] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[    1.818592] rt2880_wdt 10000120.watchdog: Initialized
[    1.824973] NET: Registered protocol family 10
[    1.832550] NET: Registered protocol family 17
[    1.837150] 8021q: 802.1Q VLAN Support v1.8
[    1.853533] VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
[    1.861622] Freeing unused kernel memory: 152K (803fa000 - 80420000)
[    1.868104] This architecture does not have kernel memory protection.
[    2.658997] random: fast init done
[    3.623849] init: Console is alive
[    3.627539] init: - watchdog -
[    5.737912] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    5.953612] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    5.962880] init: - preinit -
[    7.494494] 8021q: adding VLAN 0 to HW filter on device eth0
[    8.623275] jffs2: notice: (339) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[    8.642331] mount_root: switching to jffs2 overlay
[    8.704772] urandom-seed: Seeding with /etc/urandom.seed
[    8.837919] procd: - early -
[    8.841732] procd: - watchdog -
[    9.000833] procd: cannot set group tty for /dev/ttyS0
[    9.007309] procd: cannot set group tty for /dev/ttyS1
[    9.075353] procd: - watchdog -
[    9.078901] procd: - ubus -
[    9.264777] procd: - init -
[    9.836160] kmodloader: loading kernel modules from /etc/modules.d/*
[    9.852325] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    9.868654] Netfilter messages via NETLINK v0.30.
[    9.876508] ip_set: protocol 6
[    9.915182] Loading modules backported from Linux version wt-2017-01-31-0-ge882dff19e7f
[    9.923435] Backport generated by backports.git backports-20160324-13-g24da7d3c
[   10.001004] u32 classifier
[   10.003776]     input device check on
[   10.007575]     Actions configured
[   10.013950] Mirror/redirect action on
[   10.027821] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[   10.044387] ip_tables: (C) 2000-2006 Netfilter Core Team
[   10.131821] wireguard: WireGuard 0.0.20170706 loaded. See www.wireguard.io for information.
[   10.140432] wireguard: Copyright (C) 2015-2017 Jason A. Donenfeld . All Rights Reserved.
[   10.185076] xt_time: kernel timezone is -0000
[   10.203144] PPP generic driver version 2.4.2
[   10.210722] NET: Registered protocol family 24
[   10.236359] rt2800_wmac 10180000.wmac: loaded eeprom from mtd device "radio"
[   10.243649] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 6352, rev 0500 detected
[   10.251580] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 7620 detected
[   10.259332] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[   10.357836] kmodloader: done loading kernel modules from /etc/modules.d/*
[   19.174144] 8021q: adding VLAN 0 to HW filter on device eth0
[   19.200616] br-lan: port 1(eth0.1) entered blocking state
[   19.206142] br-lan: port 1(eth0.1) entered disabled state
[   19.212333] device eth0.1 entered promiscuous mode
[   19.217286] device eth0 entered promiscuous mode
[   19.258043] br-lan: port 1(eth0.1) entered blocking state
[   19.263571] br-lan: port 1(eth0.1) entered forwarding state
[   38.785628] random: crng init done

The issue is most likely this line:
[    0.454267] mt7620-pci 10140000.pcie: MT7620 PPLL unlock
[    0.459410] mt7620-pci: probe of 10140000.pcie failed with error -1

It appears the PCI device isn't being initialized properly.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=936