Hello,
this is about the mini-pcie version used in some embedded products (for example the Buffalo WHR-600D and the Asus RP-N53).
It has an RT5592 chip and the hardware supports both 2.4 and 5Ghz (5Ghz works with the proprietary driver supplied with the devices), but rt2800pci seems to see only the 2.4 Ghz capability.
dmesg:
[ 14.070000] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 5592, rev 0222 detected
[ 14.080000] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0001 detected
[ 14.100000] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 134.420000] ieee80211 phy0: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2860.bin'
[ 134.460000] ieee80211 phy0: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.34
The weird thing is that in lspci it is reported as an RT3091, due to the 0x3091 pci device id:
01:00.0 Network controller [0280]: Ralink corp. RT3091 Wireless 802.11n 1T/2R PCIe [1814:3091]
Subsystem: Ralink corp. RT3091 Wireless 802.11n 1T/2R PCIe [1814:3091]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 80 bytes
Interrupt: pin A routed to IRQ 4
Region 0: Memory at 20000000 (32-bit, non-prefetchable) [size=64K]
Region 1: Memory at <unassigned> (32-bit, non-prefetchable) [size=2]
Region 2: Memory at <unassigned> (32-bit, non-prefetchable) [size=2]
Region 3: Memory at <unassigned> (32-bit, non-prefetchable) [size=2]
Region 4: Memory at <unassigned> (32-bit, non-prefetchable) [size=2]
Region 5: Memory at <unassigned> (32-bit, non-prefetchable) [size=2]
Expansion ROM at <unassigned> [disabled] [size=2]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME+
Capabilities: [50] MSI: Enable- Count=1/32 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [70] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <64us
ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR-, OBFF Not Supported
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [140 v1] Device Serial Number 08-68-35-ff-fe-60-a8-86
Kernel driver in use: rt2800pci
So maybe due to this (i'm not sure), rt2800pci only enables the 2.4 Ghz band support:
# iw phy0 info
Wiphy phy0
max # scan SSIDs: 4
max scan IEs length: 2257 bytes
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Available Antennas: TX 0 RX 0
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* WDS
* monitor
* mesh point
Band 1:
Capabilities: 0x272
HT20/HT40
Static SM Power Save
RX Greenfield
RX HT20 SGI
RX HT40 SGI
RX STBC 2-streams
Max AMSDU length: 3839 bytes
No DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 2 usec (0x04)
HT RX MCS rate indexes supported: 0-15, 32
TX unequal modulation not supported
HT TX Max spatial streams: 1
HT TX MCS rate indexes supported may differ
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm)
* 2472 MHz [13] (20.0 dBm)
* 2484 MHz [14] (disabled)
valid interface combinations:
* #{ managed, AP, mesh point } <= 8,
total <= 8, #channels <= 1
HT Capability overrides:
* MCS: ff ff ff ff ff ff ff ff ff ff
* maximum A-MSDU length
* supported channel width
* short GI for 40 MHz
* max A-MPDU length exponent
* min MPDU start spacing
All this with kernel 3.18 (openwrt 15.05 Chaos Calmer).
Any ideas?
Thanks
Alberto Mattea