summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml')
-rw-r--r--Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml99
1 files changed, 99 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml
new file mode 100644
index 000000000..0f9d2b461
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra210-dmic.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra210-dmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra210 DMIC Controller
+
+description: |
+ The Digital MIC (DMIC) Controller is used to interface with Pulse
+ Density Modulation (PDM) input devices. It converts PDM signals to
+ Pulse Coded Modulation (PCM) signals. DMIC can be viewed as a PDM
+ receiver.
+
+maintainers:
+ - Jon Hunter <jonathanh@nvidia.com>
+ - Sameer Pujar <spujar@nvidia.com>
+
+allOf:
+ - $ref: name-prefix.yaml#
+
+properties:
+ $nodename:
+ pattern: "^dmic@[0-9a-f]*$"
+
+ compatible:
+ oneOf:
+ - const: nvidia,tegra210-dmic
+ - items:
+ - enum:
+ - nvidia,tegra234-dmic
+ - nvidia,tegra194-dmic
+ - nvidia,tegra186-dmic
+ - const: nvidia,tegra210-dmic
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: dmic
+
+ assigned-clocks:
+ maxItems: 1
+
+ assigned-clock-parents:
+ maxItems: 1
+
+ assigned-clock-rates:
+ maxItems: 1
+
+ sound-name-prefix:
+ pattern: "^DMIC[1-9]$"
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port@0:
+ $ref: audio-graph-port.yaml#
+ unevaluatedProperties: false
+ description: |
+ DMIC ACIF (Audio Client Interface) port connected to the
+ corresponding AHUB (Audio Hub) ACIF port.
+
+ port@1:
+ $ref: audio-graph-port.yaml#
+ unevaluatedProperties: false
+ description: |
+ DMIC DAP (Digital Audio Port) interface which can be connected
+ to external audio codec for capture.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - assigned-clocks
+ - assigned-clock-parents
+
+additionalProperties: false
+
+examples:
+ - |
+ #include<dt-bindings/clock/tegra210-car.h>
+
+ dmic@702d4000 {
+ compatible = "nvidia,tegra210-dmic";
+ reg = <0x702d4000 0x100>;
+ clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
+ clock-names = "dmic";
+ assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
+ assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
+ assigned-clock-rates = <3072000>;
+ sound-name-prefix = "DMIC1";
+ };
+
+...