rockchip,pdm.yaml (2805B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/rockchip,pdm.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Rockchip PDM controller 8 9description: 10 The Pulse Density Modulation Interface Controller (PDMC) is 11 a PDM interface controller and decoder that support PDM format. 12 It integrates a clock generator driving the PDM microphone 13 and embeds filters which decimate the incoming bit stream to 14 obtain most common audio rates. 15 16maintainers: 17 - Heiko Stuebner <heiko@sntech.de> 18 19properties: 20 compatible: 21 enum: 22 - rockchip,pdm 23 - rockchip,px30-pdm 24 - rockchip,rk1808-pdm 25 - rockchip,rk3308-pdm 26 - rockchip,rk3568-pdm 27 - rockchip,rv1126-pdm 28 29 reg: 30 maxItems: 1 31 32 interrupts: 33 maxItems: 1 34 35 clocks: 36 items: 37 - description: clock for PDM controller 38 - description: clock for PDM BUS 39 40 clock-names: 41 items: 42 - const: pdm_clk 43 - const: pdm_hclk 44 45 dmas: 46 maxItems: 1 47 48 dma-names: 49 items: 50 - const: rx 51 52 power-domains: 53 maxItems: 1 54 55 resets: 56 items: 57 - description: reset for PDM controller 58 59 reset-names: 60 items: 61 - const: pdm-m 62 63 rockchip,path-map: 64 $ref: /schemas/types.yaml#/definitions/uint32-array 65 description: 66 Defines the mapping of PDM SDIx to PDM PATHx. 67 By default, they are mapped one-to-one. 68 maxItems: 4 69 uniqueItems: true 70 items: 71 enum: [ 0, 1, 2, 3 ] 72 73 "#sound-dai-cells": 74 const: 0 75 76required: 77 - compatible 78 - reg 79 - interrupts 80 - clocks 81 - clock-names 82 - dmas 83 - dma-names 84 - "#sound-dai-cells" 85 86additionalProperties: false 87 88examples: 89 - | 90 #include <dt-bindings/clock/rk3328-cru.h> 91 #include <dt-bindings/interrupt-controller/arm-gic.h> 92 #include <dt-bindings/interrupt-controller/irq.h> 93 #include <dt-bindings/pinctrl/rockchip.h> 94 95 bus { 96 #address-cells = <2>; 97 #size-cells = <2>; 98 99 pdm@ff040000 { 100 compatible = "rockchip,pdm"; 101 reg = <0x0 0xff040000 0x0 0x1000>; 102 interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>; 103 clocks = <&cru SCLK_PDM>, <&cru HCLK_PDM>; 104 clock-names = "pdm_clk", "pdm_hclk"; 105 dmas = <&dmac 16>; 106 dma-names = "rx"; 107 #sound-dai-cells = <0>; 108 pinctrl-names = "default", "sleep"; 109 pinctrl-0 = <&pdmm0_clk 110 &pdmm0_sdi0 111 &pdmm0_sdi1 112 &pdmm0_sdi2 113 &pdmm0_sdi3>; 114 pinctrl-1 = <&pdmm0_clk_sleep 115 &pdmm0_sdi0_sleep 116 &pdmm0_sdi1_sleep 117 &pdmm0_sdi2_sleep 118 &pdmm0_sdi3_sleep>; 119 }; 120 };