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Diffstat (limited to 'sound/soc/davinci/davinci-evm.c')
-rw-r--r--sound/soc/davinci/davinci-evm.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
index 01b948bb55a..54851f31856 100644
--- a/sound/soc/davinci/davinci-evm.c
+++ b/sound/soc/davinci/davinci-evm.c
@@ -26,7 +26,6 @@
#include "davinci-pcm.h"
#include "davinci-i2s.h"
-#define EVM_CODEC_CLOCK 22579200
#define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
@@ -37,6 +36,21 @@ static int evm_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int ret = 0;
+ unsigned sysclk;
+
+ /* ASP1 on DM355 EVM is clocked by an external oscillator */
+ if (machine_is_davinci_dm355_evm())
+ sysclk = 27000000;
+
+ /* ASP0 in DM6446 EVM is clocked by U55, as configured by
+ * board-dm644x-evm.c using GPIOs from U18. There are six
+ * options; here we "know" we use a 48 KHz sample rate.
+ */
+ else if (machine_is_davinci_evm())
+ sysclk = 12288000;
+
+ else
+ return -EINVAL;
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
@@ -49,8 +63,7 @@ static int evm_hw_params(struct snd_pcm_substream *substream,
return ret;
/* set the codec system clock */
- ret = snd_soc_dai_set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
- SND_SOC_CLOCK_OUT);
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;