| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/sound/rockchip,pdm.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Rockchip PDM controller |
| |
| description: |
| The Pulse Density Modulation Interface Controller (PDMC) is |
| a PDM interface controller and decoder that support PDM format. |
| It integrates a clock generator driving the PDM microphone |
| and embeds filters which decimate the incoming bit stream to |
| obtain most common audio rates. |
| |
| maintainers: |
| - Heiko Stuebner <heiko@sntech.de> |
| |
| properties: |
| compatible: |
| enum: |
| - rockchip,pdm |
| - rockchip,px30-pdm |
| - rockchip,rk1808-pdm |
| - rockchip,rk3308-pdm |
| - rockchip,rk3568-pdm |
| - rockchip,rv1126-pdm |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| maxItems: 1 |
| |
| clocks: |
| items: |
| - description: clock for PDM controller |
| - description: clock for PDM BUS |
| |
| clock-names: |
| items: |
| - const: pdm_clk |
| - const: pdm_hclk |
| |
| dmas: |
| maxItems: 1 |
| |
| dma-names: |
| items: |
| - const: rx |
| |
| power-domains: |
| maxItems: 1 |
| |
| resets: |
| items: |
| - description: reset for PDM controller |
| |
| reset-names: |
| items: |
| - const: pdm-m |
| |
| rockchip,path-map: |
| $ref: /schemas/types.yaml#/definitions/uint32-array |
| description: |
| Defines the mapping of PDM SDIx to PDM PATHx. |
| By default, they are mapped one-to-one. |
| maxItems: 4 |
| uniqueItems: true |
| items: |
| enum: [ 0, 1, 2, 3 ] |
| |
| "#sound-dai-cells": |
| const: 0 |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - clocks |
| - clock-names |
| - dmas |
| - dma-names |
| - "#sound-dai-cells" |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/clock/rk3328-cru.h> |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| #include <dt-bindings/pinctrl/rockchip.h> |
| |
| bus { |
| #address-cells = <2>; |
| #size-cells = <2>; |
| |
| pdm@ff040000 { |
| compatible = "rockchip,pdm"; |
| reg = <0x0 0xff040000 0x0 0x1000>; |
| interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&cru SCLK_PDM>, <&cru HCLK_PDM>; |
| clock-names = "pdm_clk", "pdm_hclk"; |
| dmas = <&dmac 16>; |
| dma-names = "rx"; |
| #sound-dai-cells = <0>; |
| pinctrl-names = "default", "sleep"; |
| pinctrl-0 = <&pdmm0_clk |
| &pdmm0_sdi0 |
| &pdmm0_sdi1 |
| &pdmm0_sdi2 |
| &pdmm0_sdi3>; |
| pinctrl-1 = <&pdmm0_clk_sleep |
| &pdmm0_sdi0_sleep |
| &pdmm0_sdi1_sleep |
| &pdmm0_sdi2_sleep |
| &pdmm0_sdi3_sleep>; |
| }; |
| }; |
