Dear All,
I am working on PXA270 board. We have 2 usb ports enabled on that.
By default port1 is connected to dedicated differential ports.
For Host port 2 there are 2 options
1.Differntial Mode: Can be Connected to differential port. The pin
USBC_P and the pin USBC_N output USBH_N<2> and USBH_P<2> signals
can be set by UP2OCR[HXOE]=1 and UP2OCR[HXS]= 1.
2.Single Ended Mode: Connection via external USB tranceiver.
I used the first configuration mode to enable Host Port 2. For that I
have enabled DPPDE,DMPDE,HXOE and HXS in UP2OCR register. But
When I connected the Full speed device(3Com wifi) It reports that low
speed device is connected and emmits read error messages as shown below.
When low speed device
is connected it reports Full speed device is connected and emmits read
error messages. I only modified UP2OCR register, So is there any flags
to be set in the Host Controll register. Please Clarify.
Here is the description with Host register dumps
(/sys/class/usb_host/usb_host1/registers)
A.register details before inserting Wi-Fi:
bus platform, device pxa27x-ohci
PXA27x OHCI
ohci_hcd version 2006 August 04
OHCI 1.0, NO legacy support registers
control 0x4c3 RWE HCFS=suspend CBSR=3
cmdstatus 0x00000 SOC=0
intrstatus 0x00000004 SF
intrenable 0x8000005a MIE RHSC UE RD WDH
hcca frame 0x1e27
fmintvl 0xa7782edf FIT FSMPS=0xa778 FI=0x2edf
fmremaining 0x80002de3 FRT FR=0x2de3
periodicstart 0x2a2f
lsthresh 0x0628
hub poll timer off
roothub.a 04001202 POTPGT=4 NOCP NPS NDP=2(2)
roothub.b 00000000 PPCM=0000 DR=0000
roothub.status 00008000 DRWE
roothub.portstatus [0] 0x00000100 PPS
roothub.portstatus [1] 0x00000100 PPS
B.register details immediately after inserting Wi-Fi:
PXA27x OHCI
ohci_hcd version 2006 August 04
OHCI 1.0, NO legacy support registers
control 0x083 HCFS=operational CBSR=3
cmdstatus 0x00000 SOC=0
intrstatus 0x00000044 RHSC SF
intrenable 0x8000001a MIE UE RD WDH
ed_controlhead a75e1000
hcca frame 0x22e6
fmintvl 0x27782edf FSMPS=0x2778 FI=0x2edf
fmremaining 0x00001099 FR=0x1099
periodicstart 0x2a2f
lsthresh 0x0628
hub poll timer ON
roothub.a 04001202 POTPGT=4 NOCP NPS NDP=2(2)
roothub.b 00000000 PPCM=0000 DR=0000
roothub.status 00008000 DRWE
roothub.portstatus [0] 0x00000100 PPS
roothub.portstatus [1] 0x00100303 PRSC LSDA PPS PES CCS
C.Here kernel emmits following messages :
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00010301
CSC LSDA PPS CCS
hub 1-0:1.0: port 2, status 0301, change 0001, 1.5 Mb/s
hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x301
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: new low speed USB device using pxa27x-ohci and address 6
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: device descriptor read/64, error -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: device descriptor read/64, error -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: new low speed USB device using pxa27x-ohci and address 7
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: device descriptor read/64, error -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0in 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: device descriptor read/64, error -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: new low speed USB device using pxa27x-ohci and address 8
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0out 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0out 5ec20000 cc 5 -->
status -62
usb 1-2: device not accepting address 8, error -62
pxa27x-ohci pxa27x-ohci: GetStatus roothub.portstatus [1] = 0x00100303
PRSC LSDA PPS PES CCS
usb 1-2: new low speed USB device using pxa27x-ohci and address 9
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0out 5ec20000 cc 5 -->
status -62
pxa27x-ohci pxa27x-ohci: urb c072a3c0 path 2 ep0out 5ec20000 cc 5 -->
status -62
usb 1-2: device not accepting address 9, error -62
hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0004
hub 1-0:1.0: hub_suspend
pxa27x-ohci pxa27x-ohci: suspend root hub
usb usb1: usb auto-suspend
D.register details when usb is in suspended.
bus platform, device pxa27x-ohci
PXA27x OHCI
ohci_hcd version 2006 August 04
OHCI 1.0, NO legacy support registers
control 0x083 HCFS=operational CBSR=3
cmdstatus 0x00000 SOC=0
intrstatus 0x00000004 SF
intrenable 0x8000005a MIE RHSC UE RD WDH
ed_controlhead a75e1000
hcca frame 0x2ec6
fmintvl 0x27782edf FSMPS=0x2778 FI=0x2edf
fmremaining 0x00002799 FR=0x2799
periodicstart 0x2a2f
lsthresh 0x0628
hub poll timer ON
roothub.a 04001202 POTPGT=4 NOCP NPS NDP=2(2)
roothub.b 00000000 PPCM=0000 DR=0000
roothub.status 00008000 DRWE
roothub.portstatus [0] 0x00000100 PPS
roothub.portstatus [1] 0x00000301 LSDA PPS CCS
Any immediate response would be appreciated.
Thanks & regards
Girish A J
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