1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Tegra186 DSPK Controller Device Tree Bindings
10 The Digital Speaker Controller (DSPK) can be viewed as a Pulse
11 Density Modulation (PDM) transmitter that up-samples the input to
12 the desired sampling rate by interpolation and then converts the
13 over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
14 output via Delta Sigma Modulation (DSM).
17 - Jon Hunter <jonathanh@nvidia.com>
18 - Sameer Pujar <spujar@nvidia.com>
21 - $ref: name-prefix.yaml#
25 pattern: "^dspk@[0-9a-f]*$"
29 - const: nvidia,tegra186-dspk
32 - nvidia,tegra234-dspk
33 - nvidia,tegra194-dspk
34 - const: nvidia,tegra186-dspk
48 assigned-clock-parents:
55 pattern: "^DSPK[1-9]$"
58 $ref: /schemas/graph.yaml#/properties/ports
61 $ref: audio-graph-port.yaml#
62 unevaluatedProperties: false
64 DSPK ACIF (Audio Client Interface) port connected to the
65 corresponding AHUB (Audio Hub) ACIF port.
68 $ref: audio-graph-port.yaml#
69 unevaluatedProperties: false
71 DSPK DAP (Digital Audio Port) interface which can be connected
72 to external audio codec for playback.
80 - assigned-clock-parents
83 additionalProperties: false
87 #include<dt-bindings/clock/tegra186-clock.h>
90 compatible = "nvidia,tegra186-dspk";
91 reg = <0x2905000 0x100>;
92 clocks = <&bpmp TEGRA186_CLK_DSPK1>;
94 assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>;
95 assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>;
96 assigned-clock-rates = <12288000>;
97 sound-name-prefix = "DSPK1";