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1d22c337dcIn 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> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.