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 8title: Ingenic JZ47xx ADC controller IIO 9 10maintainers: 11 - Artur Rojek <contact@artur-rojek.eu> 12 13description: > 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 21properties: 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 55if: 56 not: 57 properties: 58 compatible: 59 contains: 60 const: ingenic,jz4760b-adc 61then: 62 properties: 63 ingenic,use-internal-divider: false 64 65required: 66 - compatible 67 - '#io-channel-cells' 68 - reg 69 - clocks 70 - clock-names 71 - interrupts 72 73additionalProperties: false 74 75examples: 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 }; 92