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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/atmel,sama5d2-pdmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel PDMIC decoder
+
+maintainers:
+ - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+ Atmel Pulse Density Modulation Interface Controller
+ (PDMIC) peripheral is a mono PDM decoder module
+ that decodes an incoming PDM sample stream.
+
+properties:
+ compatible:
+ const: atmel,sama5d2-pdmic
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: peripheral clock
+ - description: generated clock
+
+ clock-names:
+ items:
+ - const: pclk
+ - const: gclk
+
+ dmas:
+ maxItems: 1
+
+ dma-names:
+ const: rx
+
+ atmel,mic-min-freq:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ The minimal frequency that the microphone supports.
+
+ atmel,mic-max-freq:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ The maximal frequency that the microphone supports.
+
+ atmel,model:
+ description: The user-visible name of this sound card.
+ $ref: /schemas/types.yaml#/definitions/string
+ default: PDMIC
+
+ atmel,mic-offset:
+ $ref: /schemas/types.yaml#/definitions/int32
+ description: The offset that should be added.
+ default: 0
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - dmas
+ - dma-names
+ - clock-names
+ - clocks
+ - atmel,mic-min-freq
+ - atmel,mic-max-freq
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/dma/at91.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ pdmic: sound@f8018000 {
+ compatible = "atmel,sama5d2-pdmic";
+ reg = <0xf8018000 0x124>;
+ interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
+ dmas = <&dma0
+ (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
+ | AT91_XDMAC_DT_PERID(50))>;
+ dma-names = "rx";
+ clocks = <&pdmic_clk>, <&pdmic_gclk>;
+ clock-names = "pclk", "gclk";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pdmic_default>;
+ atmel,model = "PDMIC@sama5d2_xplained";
+ atmel,mic-min-freq = <1000000>;
+ atmel,mic-max-freq = <3246000>;
+ atmel,mic-offset = <0x0>;
+ };
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-* Atmel PDMIC driver under ALSA SoC architecture
-
-Required properties:
-- compatible
- Should be "atmel,sama5d2-pdmic".
-- reg
- Should contain PDMIC registers location and length.
-- interrupts
- Should contain the IRQ line for the PDMIC.
-- dmas
- One DMA specifiers as described in atmel-dma.txt and dma.txt files.
-- dma-names
- Must be "rx".
-- clock-names
- Required elements:
- - "pclk" peripheral clock
- - "gclk" generated clock
-- clocks
- Must contain an entry for each required entry in clock-names.
- Please refer to clock-bindings.txt.
-- atmel,mic-min-freq
- The minimal frequency that the micphone supports.
-- atmel,mic-max-freq
- The maximal frequency that the micphone supports.
-
-Optional properties:
-- pinctrl-names, pinctrl-0
- Please refer to pinctrl-bindings.txt.
-- atmel,model
- The user-visible name of this sound card.
- The default value is "PDMIC".
-- atmel,mic-offset
- The offset that should be added.
- The range is from -32768 to 32767.
- The default value is 0.
-
-Example:
- pdmic@f8018000 {
- compatible = "atmel,sama5d2-pdmic";
- reg = <0xf8018000 0x124>;
- interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
- dmas = <&dma0
- (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
- | AT91_XDMAC_DT_PERID(50))>;
- dma-names = "rx";
- clocks = <&pdmic_clk>, <&pdmic_gclk>;
- clock-names = "pclk", "gclk";
-
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_pdmic_default>;
- atmel,model = "PDMIC @ sama5d2_xplained";
- atmel,mic-min-freq = <1000000>;
- atmel,mic-max-freq = <3246000>;
- atmel,mic-offset = <0x0>;
- };