There are drivers in mainline for the Xilinx Audio Formatter and Xilinx I2S IP cores. However, because of a few issues, these were only really usable with Xilinx's xlnx_pl_snd_card top-level driver, which is not in mainline (and not suitable for mainline).
The fixes in this patchset, for the simple-card layer as well as the Xilinx drivers, now allow these drivers to be properly used with simple-card without any out-of-tree support code.
Robert Hancock (5): ASoC: xilinx: xlnx_formatter_pcm: Make buffer bytes multiple of period bytes ASoC: xilinx: xlnx_formatter_pcm: Handle sysclk setting ASoC: xilinx: xlnx_i2s.c: Handle sysclk setting ASoC: simple-card: fix probe failure on platform component ASoC: simple-card-utils: Set sysclk on all components
sound/soc/generic/simple-card-utils.c | 11 +++ sound/soc/generic/simple-card.c | 52 +++++++------ sound/soc/xilinx/xlnx_formatter_pcm.c | 44 ++++++++++- sound/soc/xilinx/xlnx_i2s.c | 104 +++++++++++++++++--------- 4 files changed, 150 insertions(+), 61 deletions(-)