On Wed, Mar 14, 2018 at 5:41 PM, Sylwester Nawrocki s.nawrocki@samsung.com wrote:
In case of sample rates lower than 44100 currently there is too low MCLK frequency set for the CODEC. Playback fails with following errors:
$ speaker-test -c2 -t sine -f 1500 -l2 -r 32000
Sine wave rate is 1500.0000Hz Rate set to 32000Hz (requested 32000Hz) Buffer size range from 128 to 131072 Period size range from 64 to 65536 Using max buffer size 131072 Periods = 4 Unable to set hw params for playback: Invalid argument Setting of hwparams failed: Invalid argument
[ 497.883700] max98090 1-0010: Invalid master clock frequency
To fix this the I2S root clock's frequency is increased, depending on sampling rate.
Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com
sound/soc/samsung/odroid.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-)
Acked-by: Krzysztof Kozlowski krzk@kernel.org
Best regards, Krzysztof