On Wednesday 26 November 2008, Mark Brown wrote:
Can someone post an overview of what the hardware configurations of these boards are, please? It's starting to sound like they're not very similar at all.
I only have schematics for Beagle ... which makes VERY minimal use of the twl4030 audio capabilities:
- stereo "headset" output, without its mic - stereo aux-in
Other twl4030 family boards *could* have:
- microphone input for that headset - stereo "hands-off" speakers - mono earpiece output - two other microphone input channels
And maybe more; that's just me summarizing unconnected pins, not the datasheet. There are also cost-reduced parts with less audio capability.
I make no claim about audio expertise -- the nearest I come to it is observing a few years back that there was a huge framework hole, which ASoC seems to fill -- but I wonder if it shouldn't suffice just to provide a mask of capabilities that are wired up on a given board.
- Dave