patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity

drivers: i2s: stm32: Add I2S master clock output

Browse source 
Some external audio devices require a master clock to be provided by
the I2S peripheral to work correctly. To allow for the operation of
these devices the master clock output should always be enabled when in
master mode.

Specific applications requiring this signal to be output can configure
the desitnation pin via the pinmux driver.

Signed-off-by: Abe Kohandel <abe@electronshepherds.com>
This commit is contained in:
Abe Kohandel 2020-04-07 22:57:31 -07:00 committed by Maureen Helm
parent a9cb9e4077
commit 475bc0c962
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/i2s/i2s_ll_stm32.c
View file

@ -225,6 +225,13 @@ static int i2s_stm32_configure(struct device *dev, enum i2s_dir dir,
return ret;
}
/* set I2S Master Clock */
if (stream->master) {
LL_I2S_EnableMasterClock(cfg->i2s);
} else {
LL_I2S_DisableMasterClock(cfg->i2s);
}
/* set I2S Data Format */
if (i2s_cfg->word_size == 16U) {
LL_I2S_SetDataFormat(cfg->i2s, LL_I2S_DATAFORMAT_16B);