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ALSA SoC Layer Overview — The Linux Kernel …
https://www.kernel.org/doc/html/latest/sound/soc/overview.html
Easy I2S/PCM audio interface setup between codec and SoC. Each SoC interface and codec registers its audio interface capabilities with the core and are subsequently matched and configured when the application hardware parameters are known. Dynamic Audio Power Management (DAPM). DAPM automatically sets the codec to its minimum power state at all …
Getting Started with SoC Linux | Documentation ...
https://rocketboards.org/foswiki/Documentation/GettingStartedWithSoCFPGALinux
1. At Linux machine (with root access), invoke fdisk command. % fdisk /dev/sdx 2. Create 3 partition as shown Partition 1 → FAT32 Partition 2 → Linux (ID 0x83) Partition 3 → Custom 0xA2 3. Format and mount the FAT32 partition % mkdosfs /dev/sdx1 % mount /dev/sdx1 4. Copy the DTB file (Linux) and OS image into partition. Then “umount” it.
ASoC Platform Driver — The Linux Kernel documentation
https://www.kernel.org/doc/html/v4.14/sound/soc/platform.html
The Linux Kernel 4.14.0 The Linux kernel user’s and administrator’s guide; The Linux kernel user-space API guide; Working with the kernel development community ... An ASoC platform driver class can be divided into audio DMA drivers, SoC DAI drivers and DSP drivers. The platform drivers only target the SoC CPU and must have no board specific ...
ASoC Codec Class Driver — The Linux Kernel …
https://www.kernel.org/doc/html/v4.10/sound/soc/codec.html
Please see include/linux/regmap.h and existing codec drivers for example regmap usage. Mixers and audio controls ¶ All the codec mixers and audio controls can be defined using the convenience macros defined in soc.h.
sof-audio.h - sound/soc/sof/sof-audio.h - Linux source ...
https://elixir.bootlin.com/linux/latest/source/sound/soc/sof/sof-audio.h
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ASoC Digital Audio Interface (DAI) — The Linux Kernel ...
https://www.kernel.org/doc/html/latest/sound/soc/dai.html
ASoC currently supports the three main Digital Audio Interfaces (DAI) found on SoC controllers and portable audio CODECs today, namely AC97, I2S and PCM. AC97 ¶ AC97 is a five wire interface commonly found on many PC sound cards.
ASoC: Supporting Audio on an Embedded Board
https://elinux.org/images/b/b5/Belloni-alsa-asoc.pdf
ASoC, ALSA System on Chip: is a Linux kernel subsystem created to provide better ALSA support for system-on-chip and portable audio codecs. It allows to reuse codec drivers across multiple architectures and provides an API to integrate them with the SoC audio interface. created for that use case designed for codec drivers reuse
Linux Kernel Documentation :: sound : alsa : soc ...
https://mjmwired.net/kernel/Documentation/sound/alsa/soc/overview.txt
Prior to the ASoC 7 subsystem there was some support in the kernel for SoC audio, however it 8 had some limitations:- 9 10 * Codec drivers were often tightly coupled to the underlying SoC 11 CPU. This is not ideal and leads to code duplication - for example, 12 Linux had different wm8731 drivers for 4 different SoC platforms.
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