Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-25 13:41:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: fsl_asrc: Set ASR76K and ASR56K based on processing clock

Browse Source 
The processing clock is different for platforms, so it is better
to set ASR76K and ASR56K based on processing clock, rather than
hard coding the value for them.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Mihai Serban <mihai.serban@nxp.com>
Link: https://lore.kernel.org/r/1589278979-31008-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2020-05-12 18:22:59 +08:00 committed by Mark Brown
parent 0e0e10fde0
commit f8953043e6
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
sound/soc/fsl/fsl_asrc.c
View File

@ -858,6 +858,8 @@ static const struct regmap_config fsl_asrc_regmap_config = {
*/
static int fsl_asrc_init(struct fsl_asrc *asrc)
{
unsigned long ipg_rate;
/* Halt ASRC internal FP when input FIFO needs data for pair A, B, C */
regmap_write(asrc->regmap, REG_ASRCTR, ASRCTR_ASRCEN);
@ -875,11 +877,14 @@ static int fsl_asrc_init(struct fsl_asrc *asrc)
regmap_update_bits(asrc->regmap, REG_ASRTFR1,
ASRTFR1_TF_BASE_MASK, ASRTFR1_TF_BASE(0xfc));
/* Set the processing clock for 76KHz to 133M */
regmap_write(asrc->regmap, REG_ASR76K, 0x06D6);
/* Set the processing clock for 56KHz to 133M */
return regmap_write(asrc->regmap, REG_ASR56K, 0x0947);
/*
* Set the period of the 76KHz and 56KHz sampling clocks based on
* the ASRC processing clock.
* On iMX6, ipg_clk = 133MHz, REG_ASR76K = 0x06D6, REG_ASR56K = 0x0947
*/
ipg_rate = clk_get_rate(asrc->ipg_clk);
regmap_write(asrc->regmap, REG_ASR76K, ipg_rate / 76000);
return regmap_write(asrc->regmap, REG_ASR56K, ipg_rate / 56000);
}
/**