From: Guiting Shen <aarongt.shen@gmail.com>
To: codrin.ciubotariu@microchip.com
Cc: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz,
tiwai@suse.com, nicolas.ferre@microchip.com,
alexandre.belloni@bootlin.com, claudiu.beznea@microchip.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Guiting Shen <aarongt.shen@gmail.com>
Subject: [PATCH] ASoC: atmel: Fix the 8K sample parameter in I2SC master
Date: Sat, 15 Jul 2023 11:06:20 +0800 [thread overview]
Message-ID: <20230715030620.62328-1-aarongt.shen@gmail.com> (raw)
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>
---
sound/soc/atmel/atmel-i2s.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/soc/atmel/atmel-i2s.c b/sound/soc/atmel/atmel-i2s.c
index 425d66edbf86..5e43ff0b537a 100644
--- 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 */
--
2.25.1
next reply other threads:[~2023-07-15 3:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-15 3:06 Guiting Shen [this message]
2023-07-25 17:54 ` Mark Brown
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