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ASoC: imx-card: Need special setting for ak4497 on i.MX8MQ

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The SAI on i.MX8MQ don't support one2one ratio for mclk:bclk, so
the mclk frequency exceeds the supported range of codec for
the case that sample rate is larger than 705kHZ and format is
S32_LE. Update the supported width for such case.

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/1641292835-19085-2-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2022-01-04 18:40:33 +08:00 committed by Mark Brown
parent e4c35e7520
commit 3349b3d0c6
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1 changed files with 16 additions and 1 deletions
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17
sound/soc/fsl/imx-card.c
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@ -553,8 +553,23 @@ static int imx_card_parse_of(struct imx_card_data *data)
link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1;
/* sai may support mclk/bclk = 1 */
if (of_find_property(np, "fsl,mclk-equal-bclk", NULL))
if (of_find_property(np, "fsl,mclk-equal-bclk", NULL)) {
link_data->one2one_ratio = true;
} else {
int i;
/*
* i.MX8MQ don't support one2one ratio, then
* with ak4497 only 16bit case is supported.
*/
for (i = 0; i < ARRAY_SIZE(ak4497_fs_mul); i++) {
if (ak4497_fs_mul[i].rmin == 705600 &&
ak4497_fs_mul[i].rmax == 768000) {
ak4497_fs_mul[i].wmin = 32;
ak4497_fs_mul[i].wmax = 32;
}
}
}
}
link->cpus->of_node = args.np;