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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/ti,tas67524.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments TAS67524 Audio Amplifier
maintainers:
- Sen Wang <sen@ti.com>
description:
The TAS67524 is a four-channel, digital-input, automotive
Class-D audio amplifier with load diagnostics and an integrated
DSP for audio processing.
allOf:
- $ref: dai-common.yaml#
properties:
compatible:
oneOf:
- items:
- enum:
- ti,tas6754
- const: ti,tas67524
- const: ti,tas67524
reg:
maxItems: 1
'#sound-dai-cells':
const: 1
description: |
The device exposes three DAIs, selected by index.
0 - Standard Audio Path (Playback)
1 - Low-Latency Playback Path (Playback)
2 - Sensory Feedback (Capture - Vpredict and Isense)
By default, all four channels of each DAI are active.
interrupts:
maxItems: 1
description:
Active-low falling-edge interrupt from the FAULT pin. When provided,
the driver uses IRQ-driven fault reporting instead of polling.
powerdown-gpios:
maxItems: 1
description:
GPIO connected to the PD pin, active low. Controls the internal
digital circuitry power state. When asserted the device enters
full power-down mode and all register state is lost. Can be omitted if
PD pin is hardwired or externally controlled.
standby-gpios:
maxItems: 1
description:
GPIO connected to the STBY pin, active low. Controls the analog
power stage. When asserted the device enters Deep Sleep mode but
remains I2C-accessible with registers retained. Can be omitted if
STBY pin is tied to PD or hardwired.
dvdd-supply:
description:
Digital logic supply (1.62 V to 3.6 V). All three supply rails must
be within their recommended operating ranges before the PD pin is
released.
pvdd-supply:
description:
Output FET power supply (4.5 V to 19 V). All three supply rails must
be within their recommended operating ranges before the PD pin is
released.
vbat-supply:
description:
Battery supply for the Class-D output stage (4.5 V to 19 V). Optional
when PVDD and VBAT are connected to the same supply rail. When absent,
VBAT is assumed hardwired to PVDD.
ti,fast-boot:
type: boolean
description:
Skip DC load diagnostic sweep at power-on to reduce boot latency.
Automatic diagnostics after fault conditions remain enabled. Hardware
overcurrent protection is always active.
ti,audio-slot-no:
$ref: /schemas/types.yaml#/definitions/uint32
description:
TDM slot offset for the standard audio playback path via SDIN1. A value
of 4 maps to slot 4. If omitted, slot assignment is derived from the
tx_mask provided via set_tdm_slot(). Without either property, no slot
mapping is configured.
ti,llp-slot-no:
$ref: /schemas/types.yaml#/definitions/uint32
description:
TDM slot offset for the low-latency playback path via SDIN1. If omitted,
slot assignment is derived from the tx_mask provided via set_tdm_slot().
Without either property, no slot mapping is configured. Disabled outside
of LLP mode, and only relevant for TDM formats.
ti,vpredict-slot-no:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
In TDM mode, enables Vpredict output and assigns its starting slot;
four consecutive slots carry Vpredict Ch1-4 on SDOUT1. May coexist
with ti,isense-slot-no using separate non-overlapping slots.
In I2S mode, enables Vpredict output on SDOUT1 (Ch1/Ch2) and SDOUT2
(Ch3/Ch4). The slot value is unused. Requires a GPIO configured as
sdout2 for Ch3/Ch4; without it only Ch1/Ch2 are output. Mutually
exclusive with ti,isense-slot-no; if both are set, Vpredict takes
priority.
Irrelevant in Left-J and Right-J modes.
ti,isense-slot-no:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
In TDM mode, enables Isense output and assigns its starting slot;
four consecutive slots carry Isense Ch1-4 on SDOUT1. May coexist
with ti,vpredict-slot-no using separate non-overlapping slots.
In I2S mode, enables Isense output on SDOUT1 (Ch1/Ch2) and SDOUT2
(Ch3/Ch4). The slot value is unused. Requires a GPIO configured as
SDOUT2 for Ch3/Ch4; without it only Ch1/Ch2 are output. Mutually
exclusive with ti,vpredict-slot-no; Vpredict takes priority if both
are set.
Irrelevant in Left-J and Right-J modes.
ti,gpio1-function:
$ref: /schemas/types.yaml#/definitions/string
description:
Function for the GPIO_1 pin. When omitted, GPIO_1 remains in its
power-on default state.
enum:
- low # Output: driven low
- auto-mute # Output: high when all channels are auto-muted
- auto-mute-ch4 # Output: high when channel 4 is auto-muted
- auto-mute-ch3 # Output: high when channel 3 is auto-muted
- auto-mute-ch2 # Output: high when channel 2 is auto-muted
- auto-mute-ch1 # Output: high when channel 1 is auto-muted
- sdout2 # Output: Routes secondary serial data output 2
- sdout1 # Output: Re-routes secondary serial data output 1
- warn # Output: warning signal (OTW, CBC)
- fault # Output: fault signal (OTSD, OC, DC)
- clock-sync # Output: clock synchronisation
- invalid-clock # Output: high when clock is invalid
- high # Output: driven high
- mute # Input: external mute control
- phase-sync # Input: phase synchronisation
- sdin2 # Input: secondary SDIN2 for I2S/LJ/RJ ch3/ch4
- deep-sleep # Input: asserted transitions device to Deep Sleep
- hiz # Input: asserted transitions device to Hi-Z
- play # Input: asserted transitions device to Play
- sleep # Input: asserted transitions device to Sleep
ti,gpio2-function:
$ref: /schemas/types.yaml#/definitions/string
description:
Function for the GPIO_2 pin. When omitted, GPIO_2 remains in its
power-on default state.
enum:
- low # Output: driven low
- auto-mute # Output: high when all channels are auto-muted
- auto-mute-ch4 # Output: high when channel 4 is auto-muted
- auto-mute-ch3 # Output: high when channel 3 is auto-muted
- auto-mute-ch2 # Output: high when channel 2 is auto-muted
- auto-mute-ch1 # Output: high when channel 1 is auto-muted
- sdout2 # Output: Routes secondary serial data output 2
- sdout1 # Output: Re-routes secondary serial data output 1
- warn # Output: warning signal (OTW, CBC)
- fault # Output: fault signal (OTSD, OC, DC)
- clock-sync # Output: clock synchronisation
- invalid-clock # Output: high when clock is invalid
- high # Output: driven high
- mute # Input: external mute control
- phase-sync # Input: phase synchronisation
- sdin2 # Input: secondary SDIN2 for I2S/LJ/RJ ch3/ch4
- deep-sleep # Input: asserted transitions device to Deep Sleep
- hiz # Input: asserted transitions device to Hi-Z
- play # Input: asserted transitions device to Play
- sleep # Input: asserted transitions device to Sleep
ports:
$ref: /schemas/graph.yaml#/properties/ports
properties:
port@0:
$ref: audio-graph-port.yaml#
unevaluatedProperties: false
description: Standard audio playback port (DAI 0).
port@1:
$ref: audio-graph-port.yaml#
unevaluatedProperties: false
description: Low-latency playback port (LLP) (DAI 1).
port@2:
$ref: audio-graph-port.yaml#
unevaluatedProperties: false
description: Sensory feedback capture port (DAI 2).
port:
$ref: audio-graph-port.yaml#
unevaluatedProperties: false
required:
- compatible
- reg
- '#sound-dai-cells'
- dvdd-supply
- pvdd-supply
anyOf:
- required: [powerdown-gpios]
- required: [standby-gpios]
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
amplifier@70 {
compatible = "ti,tas67524";
reg = <0x70>;
#sound-dai-cells = <1>;
sound-name-prefix = "TAS0";
standby-gpios = <&main_gpio0 33 GPIO_ACTIVE_LOW>;
dvdd-supply = <&dvdd_1v8>;
pvdd-supply = <&pvdd_12v>;
vbat-supply = <&vbat_12v>;
ti,audio-slot-no = <0>;
ti,llp-slot-no = <4>;
ti,vpredict-slot-no = <0>;
ti,isense-slot-no = <4>;
ti,gpio2-function = "warn";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
tas0_audio_ep: endpoint {
dai-format = "dsp_b";
remote-endpoint = <&be_tas0_audio_ep>;
};
};
port@1 {
reg = <1>;
tas0_anc_ep: endpoint {
remote-endpoint = <&be_tas0_anc_ep>;
};
};
port@2 {
reg = <2>;
tas0_fb_ep: endpoint {
remote-endpoint = <&be_tas0_fb_ep>;
};
};
};
};
};
|
