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Diffstat (limited to 'Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml')
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1 files changed, 98 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml b/Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml new file mode 100644 index 0000000000..f320b561f2 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml @@ -0,0 +1,98 @@ +# 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: + $ref: /schemas/types.yaml#/definitions/string + default: PDMIC + description: The user-visible name of this sound card. + + atmel,mic-offset: + $ref: /schemas/types.yaml#/definitions/int32 + default: 0 + description: The offset that should be added. + +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>; + }; |