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| author | Sugar Zhang <sugar.zhang@rock-chips.com> | 2021-09-23 18:50:46 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-09-27 13:01:13 +0100 |
| commit | b0e3b0a7078d71455747025e7deee766d4d43432 (patch) | |
| tree | 0b138b1e7fec57fdf81a7a2b26b6295ed5959241 /Documentation/sound | |
| parent | d0900042522345ed51127d787f02e1171e110e27 (diff) | |
| download | linux-b0e3b0a7078d71455747025e7deee766d4d43432.tar.gz | |
ASoC: dmaengine: Introduce module option prealloc_buffer_size_kbytes
Currently, The fixed 512KB prealloc buffer size is too larger for
tiny memory kernel (such as 16MB memory). This patch adds the module
option "prealloc_buffer_size_kbytes" to specify prealloc buffer size.
It's suitable for cards which use the generic dmaengine pcm driver
with no config.
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1632394246-59341-1-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa-configuration.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst index 65f61695f5618b..34888d4fc4a835 100644 --- a/Documentation/sound/alsa-configuration.rst +++ b/Documentation/sound/alsa-configuration.rst @@ -100,6 +100,15 @@ amidi_map MIDI device number maps assigned to the 2st OSS device; Default: 1 +Module snd-soc-core +------------------- + +The soc core module. It is used by all ALSA card drivers. +It takes the following options which have global effects. + +prealloc_buffer_size_kbytes + Specify prealloc buffer size in kbytes (default: 512). + Common parameters for top sound card modules -------------------------------------------- |