> 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 -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
