| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | # Copyright 2019-2020 Artur Rojek |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/iio/adc/ingenic,adc.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Ingenic JZ47xx ADC controller IIO |
| 9 | |
| 10 | maintainers: |
| 11 | - Artur Rojek <contact@artur-rojek.eu> |
| 12 | |
| 13 | description: > |
| 14 | Industrial I/O subsystem bindings for ADC controller found in |
| 15 | Ingenic JZ47xx SoCs. |
| 16 | |
| 17 | ADC clients must use the format described in |
| 18 | https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/iio-consumer.yaml, |
| 19 | giving a phandle and IIO specifier pair ("io-channels") to the ADC controller. |
| 20 | |
| 21 | properties: |
| 22 | compatible: |
| 23 | enum: |
| 24 | - ingenic,jz4725b-adc |
| 25 | - ingenic,jz4740-adc |
| 26 | - ingenic,jz4760-adc |
| 27 | - ingenic,jz4760b-adc |
| 28 | - ingenic,jz4770-adc |
| 29 | |
| 30 | '#io-channel-cells': |
| 31 | const: 1 |
| 32 | description: |
| 33 | Must be set to <1> to indicate channels are selected by index. |
| 34 | |
| 35 | reg: |
| 36 | maxItems: 1 |
| 37 | |
| 38 | clocks: |
| 39 | maxItems: 1 |
| 40 | |
| 41 | clock-names: |
| 42 | items: |
| 43 | - const: adc |
| 44 | |
| 45 | interrupts: |
| 46 | maxItems: 1 |
| 47 | |
| 48 | ingenic,use-internal-divider: |
| 49 | description: |
| 50 | If present, battery voltage is read from the VBAT_IR pin, which has an |
| 51 | internal 1/4 divider. If absent, it is read through the VBAT_ER pin, |
| 52 | which does not have such a divider. |
| 53 | type: boolean |
| 54 | |
| 55 | if: |
| 56 | not: |
| 57 | properties: |
| 58 | compatible: |
| 59 | contains: |
| 60 | const: ingenic,jz4760b-adc |
| 61 | then: |
| 62 | properties: |
| 63 | ingenic,use-internal-divider: false |
| 64 | |
| 65 | required: |
| 66 | - compatible |
| 67 | - '#io-channel-cells' |
| 68 | - reg |
| 69 | - clocks |
| 70 | - clock-names |
| 71 | - interrupts |
| 72 | |
| 73 | additionalProperties: false |
| 74 | |
| 75 | examples: |
| 76 | - | |
| 77 | #include <dt-bindings/clock/ingenic,jz4740-cgu.h> |
| 78 | #include <dt-bindings/iio/adc/ingenic,adc.h> |
| 79 | |
| 80 | adc@10070000 { |
| 81 | compatible = "ingenic,jz4740-adc"; |
| 82 | #io-channel-cells = <1>; |
| 83 | |
| 84 | reg = <0x10070000 0x30>; |
| 85 | |
| 86 | clocks = <&cgu JZ4740_CLK_ADC>; |
| 87 | clock-names = "adc"; |
| 88 | |
| 89 | interrupt-parent = <&intc>; |
| 90 | interrupts = <18>; |
| 91 | }; |