Re: [alsa-devel] MPC5200 I2S driver for ASoC

lokowich wrote:

I'm integrating a ALSA driver for an MPC5200 into the ASoC layer, similar to my successful effort for a PXA255 board.

Can you provide your code? I'm working on ASoC support for another MPC SOC, so we need to synchronize our development.

I'm modeling the DMA and ALSA interfaces per ac97mgt driver found in the Lite5200B BSP, rather than the BestComm API example in the 2.4 kernel. The speaker-test with 400Hz sine wave is working, but has a slight audible jitter. A wav file output using aplay produces white noise.

What kind of audio samples are you trying to play? Since the MPC5200 is typically big-endian, you probably can only play S16_BE samples instead of S16_LE samples.