1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/rtc/allwinner,sun6i-a31-rtc.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Allwinner A31 RTC Device Tree Bindings 8 9maintainers: 10 - Chen-Yu Tsai <wens@csie.org> 11 - Maxime Ripard <mripard@kernel.org> 12 13properties: 14 "#clock-cells": 15 const: 1 16 17 compatible: 18 oneOf: 19 - enum: 20 - allwinner,sun6i-a31-rtc 21 - allwinner,sun8i-a23-rtc 22 - allwinner,sun8i-h3-rtc 23 - allwinner,sun8i-r40-rtc 24 - allwinner,sun8i-v3-rtc 25 - allwinner,sun50i-h5-rtc 26 - allwinner,sun50i-h6-rtc 27 - items: 28 - const: allwinner,sun50i-a64-rtc 29 - const: allwinner,sun8i-h3-rtc 30 31 reg: 32 maxItems: 1 33 34 interrupts: 35 minItems: 1 36 items: 37 - description: RTC Alarm 0 38 - description: RTC Alarm 1 39 40 clocks: 41 maxItems: 1 42 43 clock-output-names: 44 minItems: 1 45 maxItems: 3 46 description: 47 The RTC provides up to three clocks 48 - the Low Frequency Oscillator or LOSC, at index 0, 49 - the Low Frequency Oscillator External output (X32KFOUT in 50 the datasheet), at index 1, 51 - the Internal Oscillator, at index 2. 52 53allOf: 54 - $ref: "rtc.yaml#" 55 - if: 56 properties: 57 compatible: 58 contains: 59 const: allwinner,sun6i-a31-rtc 60 61 then: 62 properties: 63 clock-output-names: 64 minItems: 1 65 maxItems: 1 66 67 - if: 68 properties: 69 compatible: 70 contains: 71 enum: 72 - allwinner,sun8i-a23-rtc 73 - allwinner,sun8i-r40-rtc 74 - allwinner,sun8i-v3-rtc 75 76 then: 77 properties: 78 clock-output-names: 79 minItems: 2 80 maxItems: 2 81 82 - if: 83 properties: 84 compatible: 85 contains: 86 enum: 87 - allwinner,sun8i-h3-rtc 88 - allwinner,sun50i-h5-rtc 89 - allwinner,sun50i-h6-rtc 90 91 then: 92 properties: 93 clock-output-names: 94 minItems: 3 95 maxItems: 3 96 97 - if: 98 properties: 99 compatible: 100 contains: 101 const: allwinner,sun8i-r40-rtc 102 103 then: 104 properties: 105 interrupts: 106 minItems: 1 107 maxItems: 1 108 109 else: 110 properties: 111 interrupts: 112 minItems: 2 113 maxItems: 2 114 115required: 116 - "#clock-cells" 117 - compatible 118 - reg 119 - interrupts 120 - clock-output-names 121 122additionalProperties: false 123 124examples: 125 - | 126 rtc: rtc@1f00000 { 127 compatible = "allwinner,sun6i-a31-rtc"; 128 reg = <0x01f00000 0x400>; 129 interrupts = <0 40 4>, <0 41 4>; 130 clock-output-names = "osc32k"; 131 clocks = <&ext_osc32k>; 132 #clock-cells = <1>; 133 }; 134 135... 136