* Atmel PDMIC driver under ALSA SoC architecture
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Required properties:
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- compatible
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Should be "atmel,sama5d2-pdmic".
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- reg
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Should contain PDMIC registers location and length.
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- interrupts
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Should contain the IRQ line for the PDMIC.
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- dmas
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One DMA specifiers as described in atmel-dma.txt and dma.txt files.
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- dma-names
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Must be "rx".
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- clock-names
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Required elements:
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- "pclk" peripheral clock
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- "gclk" generated clock
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- clocks
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Must contain an entry for each required entry in clock-names.
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Please refer to clock-bindings.txt.
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- atmel,mic-min-freq
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The minimal frequency that the micphone supports.
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- atmel,mic-max-freq
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The maximal frequency that the micphone supports.
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Optional properties:
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- pinctrl-names, pinctrl-0
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Please refer to pinctrl-bindings.txt.
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- atmel,model
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The user-visible name of this sound card.
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The default value is "PDMIC".
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- atmel,mic-offset
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The offset that should be added.
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The range is from -32768 to 32767.
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The default value is 0.
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Example:
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pdmic@f8018000 {
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compatible = "atmel,sama5d2-pdmic";
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reg = <0xf8018000 0x124>;
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interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
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dmas = <&dma0
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(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
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| AT91_XDMAC_DT_PERID(50))>;
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dma-names = "rx";
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clocks = <&pdmic_clk>, <&pdmic_gclk>;
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clock-names = "pclk", "gclk";
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_pdmic_default>;
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atmel,model = "PDMIC @ sama5d2_xplained";
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atmel,mic-min-freq = <1000000>;
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atmel,mic-max-freq = <3246000>;
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atmel,mic-offset = <0x0>;
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};
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