1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Tegra186 DSPK Controller Device Tree Bindings
10 The Digital Speaker Controller (DSPK) can be viewed as a Pulse
11 Density Modulation (PDM) transmitter that up-samples the input to
12 the desired sampling rate by interpolation and then converts the
13 over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
14 output via Delta Sigma Modulation (DSM).
17 - Jon Hunter <jonathanh@nvidia.com>
18 - Sameer Pujar <spujar@nvidia.com>
22 pattern: "^dspk@[0-9a-f]*$"
26 - const: nvidia,tegra186-dspk
28 - const: nvidia,tegra194-dspk
29 - const: nvidia,tegra186-dspk
43 assigned-clock-parents:
50 pattern: "^DSPK[1-9]$"
51 $ref: /schemas/types.yaml#/definitions/string
53 Used as prefix for sink/source names of the component. Must be a
54 unique string among multiple instances of the same component.
55 The name can be "DSPK1" or "DSPKx", where x depends on the maximum
56 available instances on a Tegra SoC.
59 $ref: /schemas/graph.yaml#/properties/ports
62 $ref: audio-graph-port.yaml#
63 unevaluatedProperties: false
65 DSPK ACIF (Audio Client Interface) port connected to the
66 corresponding AHUB (Audio Hub) ACIF port.
69 $ref: audio-graph-port.yaml#
70 unevaluatedProperties: false
72 DSPK DAP (Digital Audio Port) interface which can be connected
73 to external audio codec for playback.
81 - assigned-clock-parents
84 additionalProperties: false
88 #include<dt-bindings/clock/tegra186-clock.h>
91 compatible = "nvidia,tegra186-dspk";
92 reg = <0x2905000 0x100>;
93 clocks = <&bpmp TEGRA186_CLK_DSPK1>;
95 assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>;
96 assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>;
97 assigned-clock-rates = <12288000>;
98 sound-name-prefix = "DSPK1";