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ASoC: imx-card: Fix DSD/PDM mclk frequency

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[ Upstream commit c0fabd12a8570cb932f13d9388f3d887ad44369b ]

The DSD/PDM rate not only DSD64/128/256/512, which are the
multiple rate of 44.1kHz,  but also support the multiple
rate of 8kHz, so can't force all mclk frequency to be
22579200Hz, need to assign the frequency according to
rate.

Fixes: aa736700f4 ("ASoC: imx-card: Add imx-card machine driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1657100575-8261-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shengjiu Wang
2022-07-06 17:42:55 +08:00
committed by Greg Kroah-Hartman
parent 7c69f70dc5
commit fd3adcb84f
1 changed files with 11 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
sound/soc/fsl/imx-card.c
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@@ -17,6 +17,9 @@
#include "fsl_sai.h"
#define IMX_CARD_MCLK_22P5792MHZ 22579200
#define IMX_CARD_MCLK_24P576MHZ 24576000
enum codec_type {
CODEC_DUMMY = 0,
CODEC_AK5558 = 1,
@@ -353,9 +356,14 @@ static int imx_aif_hw_params(struct snd_pcm_substream *substream,
mclk_freq = akcodec_get_mclk_rate(substream, params, slots, slot_width);
else
mclk_freq = params_rate(params) * slots * slot_width;
/* Use the maximum freq from DSD512 (512*44100 = 22579200) */
if (format_is_dsd(params))
mclk_freq = 22579200;
if (format_is_dsd(params)) {
/* Use the maximum freq from DSD512 (512*44100 = 22579200) */
if (!(params_rate(params) % 11025))
mclk_freq = IMX_CARD_MCLK_22P5792MHZ;
else
mclk_freq = IMX_CARD_MCLK_24P576MHZ;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, link_data->cpu_sysclk_id, mclk_freq,
SND_SOC_CLOCK_OUT);