Dear Binh, Am Donnerstag, den 04.03.2010, 19:57 +0700 schrieb Binh T. Nguyen: > I try to use linux alsa driver on Xilinx XUPV2P board. This board has > LM4550 AC97 audio codec same to ML403 board. > -I use EDK 9.1i sp2 > -I also use opb_ac97_controller_ref_v1_00_a as requirement in > ml403-ac97cr.c > -I connect both Playback_Interrupt and Record_Interrupt to Interrupt > controller > -I use ELDK as cross compiler, and download kernel > from xilinx.wikidot.com > -I config kernel: device drivers->sound card support->Advanced linux > sound architecture-> Generic sound devices -> Xilinx ML403 AC97 > controller reference > > (I combine kernel and alsa driver into one kernel file) > But when I boot the board there are messages: > " Advanced Linux Sound Architecture dirver version 1.0.20 > Alsa device list: > No soundcards found" > Do I miss any steps? sorry, I do not know. 1. But you should provide more information. Use `alsa-info.sh` [1] to do this. I hope someone else reading this list has experience with Xilinx and may help you. But I doubt it. 2. Anyway, did you contact Xilinx about this? 3. Can you try a live image of a different GNU/Linux distribution (for example KNOPPIX) and see if it works. 4. Did you try a newer ALSA version? Thanks, Paul [1] http://www.alsa-project.org/alsa-info.sh
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