| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Allwinner A31 RTC |
| 8 | |
| 9 | maintainers: |
| 10 | - Chen-Yu Tsai <wens@csie.org> |
| 11 | - Maxime Ripard <mripard@kernel.org> |
| 12 | |
| 13 | properties: |
| 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 | - allwinner,sun50i-h616-rtc |
| 28 | - allwinner,sun50i-r329-rtc |
| 29 | - items: |
| 30 | - const: allwinner,sun50i-a64-rtc |
| 31 | - const: allwinner,sun8i-h3-rtc |
| 32 | - items: |
| 33 | - const: allwinner,sun20i-d1-rtc |
| 34 | - const: allwinner,sun50i-r329-rtc |
| 35 | |
| 36 | reg: |
| 37 | maxItems: 1 |
| 38 | |
| 39 | interrupts: |
| 40 | minItems: 1 |
| 41 | items: |
| 42 | - description: RTC Alarm 0 |
| 43 | - description: RTC Alarm 1 |
| 44 | |
| 45 | clocks: |
| 46 | minItems: 1 |
| 47 | maxItems: 4 |
| 48 | |
| 49 | clock-names: |
| 50 | minItems: 1 |
| 51 | maxItems: 4 |
| 52 | |
| 53 | clock-output-names: |
| 54 | minItems: 1 |
| 55 | maxItems: 3 |
| 56 | description: |
| 57 | The RTC provides up to three clocks |
| 58 | - the Low Frequency Oscillator or LOSC, at index 0, |
| 59 | - the Low Frequency Oscillator External output (X32KFOUT in |
| 60 | the datasheet), at index 1, |
| 61 | - the Internal Oscillator, at index 2. |
| 62 | |
| 63 | allOf: |
| 64 | - $ref: rtc.yaml# |
| 65 | - if: |
| 66 | properties: |
| 67 | compatible: |
| 68 | contains: |
| 69 | const: allwinner,sun6i-a31-rtc |
| 70 | |
| 71 | then: |
| 72 | properties: |
| 73 | clock-output-names: |
| 74 | maxItems: 1 |
| 75 | |
| 76 | - if: |
| 77 | properties: |
| 78 | compatible: |
| 79 | contains: |
| 80 | enum: |
| 81 | - allwinner,sun8i-a23-rtc |
| 82 | - allwinner,sun8i-r40-rtc |
| 83 | - allwinner,sun8i-v3-rtc |
| 84 | |
| 85 | then: |
| 86 | properties: |
| 87 | clock-output-names: |
| 88 | minItems: 2 |
| 89 | maxItems: 2 |
| 90 | |
| 91 | - if: |
| 92 | properties: |
| 93 | compatible: |
| 94 | contains: |
| 95 | enum: |
| 96 | - allwinner,sun8i-h3-rtc |
| 97 | - allwinner,sun50i-h5-rtc |
| 98 | - allwinner,sun50i-h6-rtc |
| 99 | |
| 100 | then: |
| 101 | properties: |
| 102 | clock-output-names: |
| 103 | minItems: 3 |
| 104 | |
| 105 | - if: |
| 106 | properties: |
| 107 | compatible: |
| 108 | contains: |
| 109 | const: allwinner,sun50i-h616-rtc |
| 110 | |
| 111 | then: |
| 112 | properties: |
| 113 | clocks: |
| 114 | items: |
| 115 | - description: Bus clock for register access |
| 116 | - description: 24 MHz oscillator |
| 117 | - description: 32 kHz clock from the CCU |
| 118 | |
| 119 | clock-names: |
| 120 | items: |
| 121 | - const: bus |
| 122 | - const: hosc |
| 123 | - const: pll-32k |
| 124 | |
| 125 | required: |
| 126 | - clocks |
| 127 | - clock-names |
| 128 | |
| 129 | - if: |
| 130 | properties: |
| 131 | compatible: |
| 132 | contains: |
| 133 | const: allwinner,sun50i-r329-rtc |
| 134 | |
| 135 | then: |
| 136 | properties: |
| 137 | clocks: |
| 138 | minItems: 3 |
| 139 | items: |
| 140 | - description: Bus clock for register access |
| 141 | - description: 24 MHz oscillator |
| 142 | - description: AHB parent for internal SPI clock |
| 143 | - description: External 32768 Hz oscillator |
| 144 | |
| 145 | clock-names: |
| 146 | minItems: 3 |
| 147 | items: |
| 148 | - const: bus |
| 149 | - const: hosc |
| 150 | - const: ahb |
| 151 | - const: ext-osc32k |
| 152 | |
| 153 | required: |
| 154 | - clocks |
| 155 | - clock-names |
| 156 | |
| 157 | - if: |
| 158 | properties: |
| 159 | compatible: |
| 160 | contains: |
| 161 | enum: |
| 162 | - allwinner,sun8i-r40-rtc |
| 163 | - allwinner,sun50i-h616-rtc |
| 164 | - allwinner,sun50i-r329-rtc |
| 165 | |
| 166 | then: |
| 167 | properties: |
| 168 | interrupts: |
| 169 | maxItems: 1 |
| 170 | |
| 171 | else: |
| 172 | properties: |
| 173 | interrupts: |
| 174 | minItems: 2 |
| 175 | |
| 176 | required: |
| 177 | - "#clock-cells" |
| 178 | - compatible |
| 179 | - reg |
| 180 | - interrupts |
| 181 | |
| 182 | additionalProperties: false |
| 183 | |
| 184 | examples: |
| 185 | - | |
| 186 | rtc: rtc@1f00000 { |
| 187 | compatible = "allwinner,sun6i-a31-rtc"; |
| 188 | reg = <0x01f00000 0x400>; |
| 189 | interrupts = <0 40 4>, <0 41 4>; |
| 190 | clock-output-names = "osc32k"; |
| 191 | clocks = <&ext_osc32k>; |
| 192 | #clock-cells = <1>; |
| 193 | }; |
| 194 | |
| 195 | ... |