Not posting everything I've tried, just wanted to ask a question of people experienced with the H3. Does it really support slave I2S in the mainline kernel? I've seen it posted in multiple forums that it does, and the datasheet and user manual says it does, but I can not get it working. Has anyone seen this work in person? I had to hack up the sun4i-i2s.c driver around mclk / bclk generation to make it happy just to even try it, and confirmed that all register settings look good. But the DMA just doesn't seem to transfer data when in clock slave mode. It doesn't seem like any cpu using sun4i-i2s should work in clock slave mode.