40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
* Rockchip PDM controller
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Required properties:
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- compatible: "rockchip,pdm"
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- reg: physical base address of the controller and length of memory mapped
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region.
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- dmas: DMA specifiers for rx dma. See the DMA client binding,
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Documentation/devicetree/bindings/dma/dma.txt
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- dma-names: should include "rx".
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- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
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- clock-names: should contain following:
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- "pdm_hclk": clock for PDM BUS
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- "pdm_clk" : clock for PDM controller
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- pinctrl-names: Must contain a "default" entry.
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- pinctrl-N: One property must exist for each entry in
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pinctrl-names. See ../pinctrl/pinctrl-bindings.txt
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for details of the property values.
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Example for rk3328 PDM controller:
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pdm: pdm@ff040000 {
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compatible = "rockchip,pdm";
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reg = <0x0 0xff040000 0x0 0x1000>;
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clocks = <&clk_pdm>, <&clk_gates28 0>;
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clock-names = "pdm_clk", "pdm_hclk";
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dmas = <&pdma 16>;
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#dma-cells = <1>;
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dma-names = "rx";
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&pdmm0_clk
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&pdmm0_fsync
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&pdmm0_sdi0
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&pdmm0_sdi1
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&pdmm0_sdi2
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&pdmm0_sdi3>;
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pinctrl-1 = <&pdmm0_sleep>;
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status = "disabled";
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};
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