Date: Wed, 04 Jun 2014 15:10:02 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Yoshiro MIHIRA <sanpei.ml@gmail.com>, freebsd-arm@freebsd.org Subject: Re: only issue on FreeBSD/arm(beaglebone black) with multi channel USB audio device. Message-ID: <538F1AAA.5000403@selasky.org> In-Reply-To: <CALwmBx1STSve8DmM46O7x1Kz-R8HmTcnTtAkyxUcKob8cb4EUQ@mail.gmail.com> References: <CALwmBx1STSve8DmM46O7x1Kz-R8HmTcnTtAkyxUcKob8cb4EUQ@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 06/04/14 15:03, Yoshiro MIHIRA wrote: > I have multi-channel USB audio device. > > *1 Kyo-On DIGI(sorry,this page was writtin in Japanese) > http://www.area-powers.jp/product/usb_product/product/kyo-on/u1soundt4.html > > I can use this device without issue on **FreeBSD/i386-current**[OK]. > (only I set below setting in /boot/loader.conf > hw.usb.uaudio.default_ > channels=16 > > [FYI] we discussed below thread. > http://comments.gmane.org/gmane.os.freebsd.devel.usb/6213 > > I tried to use this USB audio on **FreeBSD/arm BeagleBone Black** same > source tree(r267049). > However I have noise sound **playback** sound[NG](mpg123 and wavplay). > If I **record** this device on BeagleBone Black, there is no issues. > > If I use 2ch USB audio device, there is no issues on BeagleBone Black. > > Does someone have any idea to use this device on BeagleBone Black? > Hi, Can you give some more information about your USB audio device: High Speed or Full Speed? What USB controllers are used? There are some limitations currently, that high-payload isochonous transfers are not fully supported by the non ehci/ohci/uhci/xhci controllers. That probably explains why only 2-channels are working. --HPS
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?538F1AAA.5000403>