1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/adc/ti,am3359-adc.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: TI AM3359 ADC 8 9maintainers: 10 - Miquel Raynal <miquel.raynal@bootlin.com> 11 12properties: 13 compatible: 14 oneOf: 15 - enum: 16 - ti,am3359-adc 17 - ti,am4372-adc 18 - items: 19 - enum: 20 - ti,am654-adc 21 - const: ti,am3359-adc 22 23 '#io-channel-cells': 24 const: 1 25 26 ti,adc-channels: 27 description: List of analog inputs available for ADC. AIN0 = 0, AIN1 = 1 and 28 so on until AIN7 = 7. 29 $ref: /schemas/types.yaml#/definitions/uint32-array 30 minItems: 1 31 maxItems: 8 32 33 ti,chan-step-opendelay: 34 description: List of open delays for each channel of ADC in the order of 35 ti,adc-channels. The value corresponds to the number of ADC clock cycles 36 to wait after applying the step configuration registers and before sending 37 the start of ADC conversion. Maximum value is 0x3FFFF. 38 $ref: /schemas/types.yaml#/definitions/uint32-array 39 minItems: 1 40 maxItems: 8 41 42 ti,chan-step-sampledelay: 43 description: List of sample delays for each channel of ADC in the order of 44 ti,adc-channels. The value corresponds to the number of ADC clock cycles 45 to sample (to hold start of conversion high). Maximum value is 0xFF. 46 $ref: /schemas/types.yaml#/definitions/uint32-array 47 minItems: 1 48 maxItems: 8 49 50 ti,chan-step-avg: 51 description: Number of averages to be performed for each channel of ADC. If 52 average is 16 (this is also the maximum) then input is sampled 16 times 53 and averaged to get more accurate value. This increases the time taken by 54 ADC to generate a sample. Maximum value is 16. 55 $ref: /schemas/types.yaml#/definitions/uint32-array 56 minItems: 1 57 maxItems: 8 58 59required: 60 - compatible 61 - '#io-channel-cells' 62 - ti,adc-channels 63 64additionalProperties: false 65 66examples: 67 - | 68 adc { 69 compatible = "ti,am3359-adc"; 70 #io-channel-cells = <1>; 71 ti,adc-channels = <4 5 6 7>; 72 ti,chan-step-opendelay = <0x098 0x3ffff 0x098 0x0>; 73 ti,chan-step-sampledelay = <0xff 0x0 0xf 0x0>; 74 ti,chan-step-avg = <16 2 4 8>; 75 }; 76