Add fixed sai mclk for PDM software decimation improve
libimxswpdm conversion algorithm performance for
voice applications by using exact division ratios for
clock configurations mclk, bitclk.
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Reviewed-by: Viorel Suman <viorel.suman@nxp.com>
Compute mclk to allow low power and performance settings
based on sample_rate:
[ 8000 - 11025] low power mode
[16000 - 64000] performance mode
Update Copyright year.
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Reviewed-by: Viorel Suman <viorel.suman@nxp.com>
Add DSD_U8, DSD_U16_LE and DSD_U32_LE format constrains
in order to use SAI DSD settings for handling multi
channel capture streams. One channel per dataline.
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Reviewed-by: Viorel Suman <viorel.suman@nxp.com>
Update drivers constrains, limit sample rates to
[8Khz - 64Khz] and up to 8 channels.
Use SND_SOC_DAIFMT_PDM format type and remove
tdm slot settings to allow capture from multiple
SAI_RxD pins.
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
ALSA API has a standard way to configure DAI BCLK by calling
"snd_soc_dai_set_bclk_ratio" function. So use it to set BCLK ratio
and calculate SAI BCLK frequency.
Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
[ Aisheng: split DAI sai changes ]
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
The current implementation suggest that MAST1 frequency is to be changed,
which is wrong. Use FSL_SAI_CLK_BIT clock id instead of FSL_SAI_CLK_MAST1
in order to make the code more intuitive and to signal proper
clk_id to SAI.
Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
i.MX Sound SoC Audio support for PDM mics on SAI
Set audio recording hardware constrains, support
Sample rates: 8000, 16000, 32000, 48000, 64000
PDM decimation factor property fixed to 64
Number of channels: 1
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
[ Aisheng: clean for a new base ]
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Adrian Alonso