On 01/20/11 17:26, ext Koyamangalath, Abhilash wrote: > Hi all > While testing audio capture (using arecord e,g.),I'm getting only noise in > the (zeroed out) output buffers on the OMAP3 EVM. > I have enabled AUXL and AUXR mic inputs through alsamixer, which according to > the schematics are connected to the "Audio In" > connector on the board, even though the TWL4030 reg list does not allow me > any ways ( or so I think) to specify mic-bias for > these aux inputs.
Well, it is auxiliary input (line in). You do not need bias for it. I do not have access to OMAP3 EVM documentation, but Beagle also have AUXL/R as input. I guess you need to use correct cable, and correct source for the input (stereo jack I suppose). > With AUXL and AUXR muted - I get only silence, which seems to make sense. > Is there any basic startup setting I'm missing, maybe specific to OMAP3 EVM? Beagle? > Has anyone seen anything like this before, and could provide pointers? My bet goes for the wrong cable/accessory pair. -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
