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    Subject[PATCH 5.16 0525/1039] ASoC: imx-card: Need special setting for ak4497 on i.MX8MQ
    Date
    From: Shengjiu Wang <shengjiu.wang@nxp.com>

    [ Upstream commit 3349b3d0c63b8b6fcca58156d72407f0b2e101ac ]

    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: aa736700f42f ("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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    sound/soc/fsl/imx-card.c | 17 ++++++++++++++++-
    1 file changed, 16 insertions(+), 1 deletion(-)

    diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
    index 6f06afd23b16a..96ac1e465fade 100644
    --- a/sound/soc/fsl/imx-card.c
    +++ b/sound/soc/fsl/imx-card.c
    @@ -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;
    --
    2.34.1


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