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 enum: 15 - ti,am3359-adc 16 - ti,am4372-adc 17 18 '#io-channel-cells': 19 const: 1 20 21 ti,adc-channels: 22 description: List of analog inputs available for ADC. AIN0 = 0, AIN1 = 1 and 23 so on until AIN7 = 7. 24 $ref: /schemas/types.yaml#/definitions/uint32-array 25 minItems: 1 26 maxItems: 8 27 28 ti,chan-step-opendelay: 29 description: List of open delays for each channel of ADC in the order of 30 ti,adc-channels. The value corresponds to the number of ADC clock cycles 31 to wait after applying the step configuration registers and before sending 32 the start of ADC conversion. Maximum value is 0x3FFFF. 33 $ref: /schemas/types.yaml#/definitions/uint32-array 34 minItems: 1 35 maxItems: 8 36 37 ti,chan-step-sampledelay: 38 description: List of sample delays for each channel of ADC in the order of 39 ti,adc-channels. The value corresponds to the number of ADC clock cycles 40 to sample (to hold start of conversion high). Maximum value is 0xFF. 41 $ref: /schemas/types.yaml#/definitions/uint32-array 42 minItems: 1 43 maxItems: 8 44 45 ti,chan-step-avg: 46 description: Number of averages to be performed for each channel of ADC. If 47 average is 16 (this is also the maximum) then input is sampled 16 times 48 and averaged to get more accurate value. This increases the time taken by 49 ADC to generate a sample. Maximum value is 16. 50 $ref: /schemas/types.yaml#/definitions/uint32-array 51 minItems: 1 52 maxItems: 8 53 54required: 55 - compatible 56 - '#io-channel-cells' 57 - ti,adc-channels 58 59additionalProperties: false 60 61examples: 62 - | 63 adc { 64 compatible = "ti,am3359-adc"; 65 #io-channel-cells = <1>; 66 ti,adc-channels = <4 5 6 7>; 67 ti,chan-step-opendelay = <0x098 0x3ffff 0x098 0x0>; 68 ti,chan-step-sampledelay = <0xff 0x0 0xf 0x0>; 69 ti,chan-step-avg = <16 2 4 8>; 70 }; 71