summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml')
-rw-r--r--Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml100
1 files changed, 100 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml
new file mode 100644
index 000000000..3d538df87
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra186 DSPK Controller
+
+description: |
+ The Digital Speaker Controller (DSPK) can be viewed as a Pulse
+ Density Modulation (PDM) transmitter that up-samples the input to
+ the desired sampling rate by interpolation and then converts the
+ over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
+ output via Delta Sigma Modulation (DSM).
+
+maintainers:
+ - Jon Hunter <jonathanh@nvidia.com>
+ - Sameer Pujar <spujar@nvidia.com>
+
+allOf:
+ - $ref: name-prefix.yaml#
+
+properties:
+ $nodename:
+ pattern: "^dspk@[0-9a-f]*$"
+
+ compatible:
+ oneOf:
+ - const: nvidia,tegra186-dspk
+ - items:
+ - enum:
+ - nvidia,tegra234-dspk
+ - nvidia,tegra194-dspk
+ - const: nvidia,tegra186-dspk
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: dspk
+
+ assigned-clocks:
+ maxItems: 1
+
+ assigned-clock-parents:
+ maxItems: 1
+
+ assigned-clock-rates:
+ maxItems: 1
+
+ sound-name-prefix:
+ pattern: "^DSPK[1-9]$"
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port@0:
+ $ref: audio-graph-port.yaml#
+ unevaluatedProperties: false
+ description: |
+ DSPK ACIF (Audio Client Interface) port connected to the
+ corresponding AHUB (Audio Hub) ACIF port.
+
+ port@1:
+ $ref: audio-graph-port.yaml#
+ unevaluatedProperties: false
+ description: |
+ DSPK DAP (Digital Audio Port) interface which can be connected
+ to external audio codec for playback.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - assigned-clocks
+ - assigned-clock-parents
+ - sound-name-prefix
+
+additionalProperties: false
+
+examples:
+ - |
+ #include<dt-bindings/clock/tegra186-clock.h>
+
+ dspk@2905000 {
+ compatible = "nvidia,tegra186-dspk";
+ reg = <0x2905000 0x100>;
+ clocks = <&bpmp TEGRA186_CLK_DSPK1>;
+ clock-names = "dspk";
+ assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>;
+ assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>;
+ assigned-clock-rates = <12288000>;
+ sound-name-prefix = "DSPK1";
+ };
+
+...