Commit 39693418 authored by Shengjiu Wang's avatar Shengjiu Wang Committed by Mark Brown

ASoC: imx-card: improve the sound quality for low rate

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: aa736700 ("ASoC: imx-card: Add imx-card machine driver")
Signed-off-by: default avatarShengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1641292835-19085-4-git-send-email-shengjiu.wang@nxp.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent f331ae5f
......@@ -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, },
......
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