| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Rockchip PDM controller |
| 8 | |
| 9 | description: |
| 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 | |
| 16 | maintainers: |
| 17 | - Heiko Stuebner <heiko@sntech.de> |
| 18 | |
| 19 | allOf: |
| 20 | - $ref: dai-common.yaml# |
| 21 | |
| 22 | properties: |
| 23 | compatible: |
| 24 | enum: |
| 25 | - rockchip,pdm |
| 26 | - rockchip,px30-pdm |
| 27 | - rockchip,rk1808-pdm |
| 28 | - rockchip,rk3308-pdm |
| 29 | - rockchip,rk3568-pdm |
| 30 | - rockchip,rv1126-pdm |
| 31 | |
| 32 | reg: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | interrupts: |
| 36 | maxItems: 1 |
| 37 | |
| 38 | clocks: |
| 39 | items: |
| 40 | - description: clock for PDM controller |
| 41 | - description: clock for PDM BUS |
| 42 | |
| 43 | clock-names: |
| 44 | items: |
| 45 | - const: pdm_clk |
| 46 | - const: pdm_hclk |
| 47 | |
| 48 | dmas: |
| 49 | maxItems: 1 |
| 50 | |
| 51 | dma-names: |
| 52 | items: |
| 53 | - const: rx |
| 54 | |
| 55 | power-domains: |
| 56 | maxItems: 1 |
| 57 | |
| 58 | resets: |
| 59 | items: |
| 60 | - description: reset for PDM controller |
| 61 | |
| 62 | reset-names: |
| 63 | items: |
| 64 | - const: pdm-m |
| 65 | |
| 66 | rockchip,path-map: |
| 67 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 68 | description: |
| 69 | Defines the mapping of PDM SDIx to PDM PATHx. |
| 70 | By default, they are mapped one-to-one. |
| 71 | maxItems: 4 |
| 72 | uniqueItems: true |
| 73 | items: |
| 74 | enum: [ 0, 1, 2, 3 ] |
| 75 | |
| 76 | "#sound-dai-cells": |
| 77 | const: 0 |
| 78 | |
| 79 | required: |
| 80 | - compatible |
| 81 | - reg |
| 82 | - interrupts |
| 83 | - clocks |
| 84 | - clock-names |
| 85 | - dmas |
| 86 | - dma-names |
| 87 | - "#sound-dai-cells" |
| 88 | |
| 89 | unevaluatedProperties: false |
| 90 | |
| 91 | examples: |
| 92 | - | |
| 93 | #include <dt-bindings/clock/rk3328-cru.h> |
| 94 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 95 | #include <dt-bindings/interrupt-controller/irq.h> |
| 96 | #include <dt-bindings/pinctrl/rockchip.h> |
| 97 | |
| 98 | bus { |
| 99 | #address-cells = <2>; |
| 100 | #size-cells = <2>; |
| 101 | |
| 102 | pdm@ff040000 { |
| 103 | compatible = "rockchip,pdm"; |
| 104 | reg = <0x0 0xff040000 0x0 0x1000>; |
| 105 | interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>; |
| 106 | clocks = <&cru SCLK_PDM>, <&cru HCLK_PDM>; |
| 107 | clock-names = "pdm_clk", "pdm_hclk"; |
| 108 | dmas = <&dmac 16>; |
| 109 | dma-names = "rx"; |
| 110 | #sound-dai-cells = <0>; |
| 111 | pinctrl-names = "default", "sleep"; |
| 112 | pinctrl-0 = <&pdmm0_clk |
| 113 | &pdmm0_sdi0 |
| 114 | &pdmm0_sdi1 |
| 115 | &pdmm0_sdi2 |
| 116 | &pdmm0_sdi3>; |
| 117 | pinctrl-1 = <&pdmm0_clk_sleep |
| 118 | &pdmm0_sdi0_sleep |
| 119 | &pdmm0_sdi1_sleep |
| 120 | &pdmm0_sdi2_sleep |
| 121 | &pdmm0_sdi3_sleep>; |
| 122 | }; |
| 123 | }; |