ALSATPLG(1) General Commands Manual ALSATPLG(1)
NAME
alsatplg - ALSA Topology Compiler
SYNOPSIS
alsatplg <options> [command]
DESCRIPTION
alsatplg (ALSA Topology compiler) is a program to compile topology con-
figuration file to the binary file for the kernel drivers.
Current audio drivers typically hard code topology information in the
driver sources: This tightly couples the audio driver to the development
board making it time consuming to modify a driver to work on a different
devices. The driver is also tightly coupled to the DSP firmware version
meaning extra care is needed to keep the driver and firmware version in
sync. New firmware features also mean driver updates.
The ALSA topology project removes the need for re-writing or porting au-
dio drivers to different devices or different firmwares: Drivers have no
hard coded topology data meaning a single driver can be used on differ-
ent devices by updating the topology data from the file system. Firmware
updates can be pushed without having to update the drivers. The new
firmware just needs to include an updated topology file describing the
update.
OPTIONS
Available options:
-h, --help
this help
-V, --version
show the utility version and versions of used libraries
-c, --compile FILE
source configuration file for the compilation
-d, --decode FILE
source binary topology file for the decode
-n, --normalize FILE
parse and save the configuration file in the normalized format
-u, --dump FILE
parse and save the configuration file in the specified format
-o, --output FILE
output file
-v, --verbose LEVEL
set verbose level
-s, --sort
sort the configuration identifiers (set for normalization)
-x, --nocheck
save the configuration without additional integrity check
-z, --dapm-nosort
do not sort DAPM graph items (like in version 1.2.1-)
FILES
The master topology files for each supported sound card are in
/usr/share/alsa/topology.
For example, the master use case file for the broadwell card is in
/usr/share/alsa/topology/broadwell/broadwell.conf, this file describes
the audio hardware for the driver.
For more details on the syntax of UCM files, see the alsa-lib source
code:
<http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/topol-
ogy/parser.c>
SEE ALSO
• Topology Interface:
<http://www.alsa-project.org/alsa-doc/alsa-lib/group__topology.html>
BUGS
None known.
AUTHOR
Jaroslav Kysela <perex@perex.cz>
COPYRIGHT
GPLv2+
2018-10-09 ALSATPLG(1)
Generated by dwww version 1.16 on Sat Oct 3 07:43:02 CEST 2026.