ASoC: stm32: dfsdm: change rate limits

The DFSDM can support a larger rate range than currently
supported in driver.
Increase rate upper limit to 48kHz and allow all rates
in the range 8kHz to 48kHz.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Link: https://lore.kernel.org/r/20201007153459.22155-2-olivier.moysan@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: omn29

sound/soc/stm/stm32_adfsdm.c

@@ -47,9 +47,6 @@ static const struct snd_pcm_hardware stm32_adfsdm_pcm_hw = {
 		SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_PAUSE,
 	.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 
-	.rate_min = 8000,
-	.rate_max = 32000,
-
 	.channels_min = 1,
 	.channels_max = 1,
 
@@ -143,8 +140,9 @@ static const struct snd_soc_dai_driver stm32_adfsdm_dai = {
 		    .channels_max = 1,
 		    .formats = SNDRV_PCM_FMTBIT_S16_LE |
 			       SNDRV_PCM_FMTBIT_S32_LE,
-		    .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
-			      SNDRV_PCM_RATE_32000),
+		    .rates = SNDRV_PCM_RATE_CONTINUOUS,
+		    .rate_min = 8000,
+		    .rate_max = 48000,
 		    },
 	.ops = &stm32_adfsdm_dai_ops,
 };