7c7383cabf
Insert Feature Units in between: * USB Streaming Input Terminal and Headphones Output Terminal * Microphone Input Terminal and USB Streaming Output Terminal The Feature Units have Mute control only on the Primary channel 0. The headphones Feature Unit also has Automatic Gain control on all channels while microphone Feature Unit has Automatic Gain control only on the Logichal channel 1. Signed-off-by: Tomasz Moń <tomasz.mon@nordicsemi.no>
133 lines
3.3 KiB
Text
133 lines
3.3 KiB
Text
/*
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* Copyright (c) 2023 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/usb/audio.h>
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/ {
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uac2_headset: usb_audio2 {
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compatible = "zephyr,uac2";
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status = "okay";
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full-speed;
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high-speed;
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audio-function = <AUDIO_FUNCTION_HEADSET>;
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uac_aclk: aclk {
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compatible = "zephyr,uac2-clock-source";
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clock-type = "internal-programmable";
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frequency-control = "host-programmable";
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sampling-frequencies = <48000>;
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};
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out_terminal: out_terminal {
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compatible = "zephyr,uac2-input-terminal";
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clock-source = <&uac_aclk>;
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terminal-type = <USB_TERMINAL_STREAMING>;
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front-left;
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front-right;
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};
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out_feature_unit: out_feature_unit {
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compatible = "zephyr,uac2-feature-unit";
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data-source = <&out_terminal>;
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mute-control = "host-programmable";
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automatic-gain-control =
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"host-programmable" /* Primary */,
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"host-programmable" /* Channel 1 */,
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"host-programmable" /* Channel 2 */;
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};
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headphones_output: headphones {
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compatible = "zephyr,uac2-output-terminal";
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data-source = <&out_feature_unit>;
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clock-source = <&uac_aclk>;
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terminal-type = <BIDIRECTIONAL_TERMINAL_HEADSET>;
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assoc-terminal = <&mic_input>;
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};
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mic_input: microphone {
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compatible = "zephyr,uac2-input-terminal";
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clock-source = <&uac_aclk>;
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terminal-type = <BIDIRECTIONAL_TERMINAL_HEADSET>;
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/* Circular reference, macros will figure it out and
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* provide correct associated terminal ID because the
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* terminals associations are always 1-to-1.
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*
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* assoc-terminal = <&headphones_output>;
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*/
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front-left;
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};
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in_feature_unit: in_feature_unit {
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compatible = "zephyr,uac2-feature-unit";
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data-source = <&mic_input>;
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mute-control = "host-programmable";
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automatic-gain-control =
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"not-present" /* Primary */,
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"host-programmable" /* Channel 1 */;
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};
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in_terminal: in_terminal {
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compatible = "zephyr,uac2-output-terminal";
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data-source = <&in_feature_unit>;
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clock-source = <&uac_aclk>;
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terminal-type = <USB_TERMINAL_STREAMING>;
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};
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as_iso_out: out_interface {
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compatible = "zephyr,uac2-audio-streaming";
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linked-terminal = <&out_terminal>;
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implicit-feedback;
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subslot-size = <2>;
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bit-resolution = <16>;
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};
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as_iso_in: in_interface {
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compatible = "zephyr,uac2-audio-streaming";
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linked-terminal = <&in_terminal>;
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implicit-feedback;
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subslot-size = <2>;
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bit-resolution = <16>;
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};
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};
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};
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/ {
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hs_uac2_headphones: hs_usb_audio2 {
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compatible = "zephyr,uac2";
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status = "okay";
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high-speed;
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audio-function = <AUDIO_FUNCTION_OTHER>;
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hs_uac_aclk: hs_aclk {
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compatible = "zephyr,uac2-clock-source";
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clock-type = "internal-programmable";
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frequency-control = "host-programmable";
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sampling-frequencies = <192000>;
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};
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hs_out_terminal: hs_out_terminal {
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compatible = "zephyr,uac2-input-terminal";
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clock-source = <&hs_uac_aclk>;
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terminal-type = <USB_TERMINAL_STREAMING>;
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front-left;
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front-right;
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};
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hs_headphones_output: hs_headphones {
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compatible = "zephyr,uac2-output-terminal";
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data-source = <&hs_out_terminal>;
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clock-source = <&hs_uac_aclk>;
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terminal-type = <OUTPUT_TERMINAL_HEADPHONES>;
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};
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hs_as_iso_out: hs_out_interface {
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compatible = "zephyr,uac2-audio-streaming";
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linked-terminal = <&hs_out_terminal>;
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subslot-size = <3>;
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bit-resolution = <24>;
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};
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};
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};
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