ASoC: atmel: Fix the 8K sample parameter in I2SC master

The 8K sample parameter of 12.288Mhz main system bus clock doesn't work
because the I2SC_MR.IMCKDIV must not be 0 according to the sama5d2
series datasheet(I2SC Mode Register of Register Summary).

So use the 6.144Mhz instead of 12.288Mhz to support 8K sample.

Signed-off-by: Guiting Shen <aarongt.shen@gmail.com>
Link: https://lore.kernel.org/r/20230715030620.62328-1-aarongt.shen@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/atmel/atmel-i2s.c b/sound/soc/atmel/atmel-i2s.c
index 49930ba..69a88dc 100644 (file)
--- a/sound/soc/atmel/atmel-i2s.c
+++ b/sound/soc/atmel/atmel-i2s.c
@@ -163,11 +163,14 @@ struct atmel_i2s_gck_param {
 
 #define I2S_MCK_12M288         12288000UL
 #define I2S_MCK_11M2896                11289600UL
+#define I2S_MCK_6M144          6144000UL
 
 /* mck = (32 * (imckfs+1) / (imckdiv+1)) * fs */
 static const struct atmel_i2s_gck_param gck_params[] = {
+       /* mck = 6.144Mhz */
+       {  8000, I2S_MCK_6M144,  1, 47},        /* mck =  768 fs */
+
        /* mck = 12.288MHz */
-       {  8000, I2S_MCK_12M288, 0, 47},        /* mck = 1536 fs */
        { 16000, I2S_MCK_12M288, 1, 47},        /* mck =  768 fs */
        { 24000, I2S_MCK_12M288, 3, 63},        /* mck =  512 fs */
        { 32000, I2S_MCK_12M288, 3, 47},        /* mck =  384 fs */