diff options
| author | Simon Glass <sjg@chromium.org> | 2019-02-16 20:24:55 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2019-02-20 15:27:09 +0800 |
| commit | 2ca471379b471dc0d31459974d7cc4b54c824956 (patch) | |
| tree | 983fe8748d877c73a8cbbfb277d6c6078ebea30e /doc | |
| parent | 2850266965ade165f913a66f679a0449faf21180 (diff) | |
| download | u-boot-2ca471379b471dc0d31459974d7cc4b54c824956.tar.gz | |
sound: Add support for Intel HDA
The Intel High-definition Audio is a newer-generation audio system which
provides for transfer of a large number of audio stream, each containing
up to 16 channels.
Add support for HDA as a library which can be used by other drivers.
U-Boot currently uses only two channels (stereo).
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/sound/intel-hda.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/sound/intel-hda.txt b/doc/device-tree-bindings/sound/intel-hda.txt new file mode 100644 index 0000000000..fb2ce55006 --- /dev/null +++ b/doc/device-tree-bindings/sound/intel-hda.txt @@ -0,0 +1,25 @@ +* Intel High-definition Audio + +Configuration is set using 'verbs' which are blocks of 16 bytes of data each +with a different purpose, a little like a simple instruction set. + +Top-level node +-------------- + +Required properties: +- compatible: "intel,hd-audio" +- beep-verbs: list of verbs to send for a beep + +Optional properties +- intel,beep-nid: Node ID to use for beep (will be detected if not provided) + +Required subnodes: +- codecs: Contains a list of codec nodes + + +* Codec nodes + +Required properties: +- vendor-id: 16-bit vendor ID for audio codec +- device-id: 16-bit device ID for audio codec +- verbs: List of verbs, each 4 cells in length |