вторник, 2 июня 2015 г., 19:00:30 UTC+3 пользователь RobertCNelson написал: > > On Tue, Jun 2, 2015 at 10:58 AM, Alexander Tsoy <pule...@gmail.com > <javascript:>> wrote: > > Hello! > > > > I'm trying to get BBB Rev C working with USB sound card. Everything just > > works with kernel 3.8. With kernel 3.14 sound either gets completely > stuck > > right after the boot (most of the time) or work for some time and then > get > > stuck. I don't know how to debug this issue. There are no any relevant > > messages in the kernel log. Here are usbmon traces taken when I try to > play > > sound: > > If usb worked with 3.8 but fails with 3.14, it's probally: > > CONFIG_USB_TI_CPPI41_DMA=y > > So rebuild, with: > > # CONFIG_USB_TI_CPPI41_DMA is not set > CONFIG_MUSB_PIO_ONLY=y >
Thank you. After switching to PIO sound card seems to work fine. If I understand correctly this also can be achieved by adding *musb_hdrc*. *use_dma*=n to the kernel cmdline, but I haven't tried that. > ps, you can also give 4.1.0-rc6 a try: > > sudo apt-get update > sudo apt-get install linux-image-4.1.0-rc6-bone6 > sudo reboot > > OK. I'll compile and test it when I have free time :) -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
