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    Subject[PATCH 5.16 0527/1039] ASoC: imx-card: improve the sound quality for low rate
    Date
    From: Shengjiu Wang <shengjiu.wang@nxp.com>

    [ Upstream commit 3969341813eb56d2dfc39bb64229359a6ae3c195 ]

    According to RM, on auto mode:
    For codec AK4458 and AK4497, the lowest ratio of MLCK/FS is 256
    if sample rate is 8kHz-48kHz,
    For codec AK5558, the lowest ratio of MLCK/FS is 512 if sample
    rate is 8kHz-48kHz.

    With these setting the sound quality for 8kHz-48kHz can be improved.

    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/1641292835-19085-4-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 | 8 ++++----
    1 file changed, 4 insertions(+), 4 deletions(-)

    diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
    index 84a8dcdee9316..c7503a5f7cfbc 100644
    --- a/sound/soc/fsl/imx-card.c
    +++ b/sound/soc/fsl/imx-card.c
    @@ -120,7 +120,7 @@ struct imx_card_data {

    static struct imx_akcodec_fs_mul ak4458_fs_mul[] = {
    /* Normal, < 32kHz */
    - { .rmin = 8000, .rmax = 24000, .wmin = 1024, .wmax = 1024, },
    + { .rmin = 8000, .rmax = 24000, .wmin = 256, .wmax = 1024, },
    /* Normal, 32kHz */
    { .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, },
    /* Normal */
    @@ -151,8 +151,8 @@ static struct imx_akcodec_fs_mul ak4497_fs_mul[] = {
    * Table 7 - mapping multiplier and speed mode
    * Tables 8 & 9 - mapping speed mode and LRCK fs
    */
    - { .rmin = 8000, .rmax = 32000, .wmin = 1024, .wmax = 1024, }, /* Normal, <= 32kHz */
    - { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, }, /* Normal */
    + { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, /* Normal, <= 32kHz */
    + { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 512, }, /* Normal */
    { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */
    { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */
    { .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */
    @@ -164,7 +164,7 @@ static struct imx_akcodec_fs_mul ak4497_fs_mul[] = {
    * (Table 4 from datasheet)
    */
    static struct imx_akcodec_fs_mul ak5558_fs_mul[] = {
    - { .rmin = 8000, .rmax = 32000, .wmin = 1024, .wmax = 1024, },
    + { .rmin = 8000, .rmax = 32000, .wmin = 512, .wmax = 1024, },
    { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, },
    { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, },
    { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, },
    --
    2.34.1


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