16 Mar
2012
16 Mar
'12
8 a.m.
On 03/15/2012 12:37 PM, Peter Ujfalusi wrote:
Take the DMA packet mode into use when the McBSP is configured in element dma_op_mode if the stream is not mono. In this way we transfer one sample from/to McBSP FIFO upon DMA request. This change only affects OMAP3+ versions, where the McBSP ports have FIFO.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com
sound/soc/omap/omap-mcbsp.c | 30 +++++++++++++++++------------- 1 files changed, 17 insertions(+), 13 deletions(-)
Out of curiosity, I guess this will decrease a memory bus or DMA controller load a bit. Can you see any difference with the SW tools (top, etc) under some system load or do you need some on-chip observability to be able to measure effect of this transfer pattern change?
Just willing to learn here :-)
--
Jarkko