Hi, > -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of Gupta, Ajay Kumar > Sent: Saturday, November 21, 2009 8:21 PM > To: linux-usb@xxxxxxxxxxxxxxx > Subject: RE: omap3evm: ehci: audio record/play issue > > > Hi, > > > > I a trying to test audio record/play on omap3evm EHCI port using below > > command. > > > > $ arecord -f dat -D plughw:0,0 | aplay -f dat -D plughw:0,0 > > > > I get error message .cannot submit datapipe for urb 0, error -28: not > > enough bandwidth. > > Same test works fine with MUSB controller. > > Enabling debug messages I get below message, > > ehci-omap ehci-omap.0: iso sched full c58eee80 (now 1471 max 3519) > > cannot submit datapipe for urb 0, error -28: not enough bandwidth Enabling CONFIG_USB_EHCI_TT_NEWSCHED=y fixed the issue.My audio device Is a full speed device. Ajay > > -Ajay > > > > Log attached here, > > > > root@omap3evm:~/ajay/audio# arecord -f dat -D plughw:0,0 | aplay -f dat > -D > > plugh > > w:0,0 > > Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, > > Stereo > > Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, > Stereo > > cannot submit datapipe for urb 0, error -28: not enough bandwidth > > aplay: set_params:1041: Unable to install hw params: > > ACCESS: RW_INTERLEAVED > > FORMAT: S16_LE > > SUBFORMAT: STD > > SAMPLE_BITS: 16 > > FRAME_BITS: 32 > > CHANNELS: 2 > > RATE: 48000 > > PERIOD_TIME: 125000 > > PERIOD_SIZE: 6000 > > PERIOD_BYTES: 24000 > > PERIODS: 4 > > BUFFER_TIME: 500000 > > BUFFER_SIZE: 24000 > > BUFFER_BYTES: 96000 > > TICK_TIME: 0 > > > > Regards, > > Ajay > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
