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| 1 | +/* |
| 2 | + * SPDX-License-Identifier: Apache-2.0 |
| 3 | + * |
| 4 | + * Copyright (c) 2025 Silicon Laboratories Inc. |
| 5 | + */ |
| 6 | + |
| 7 | +#include <dt-bindings/adc/silabs-adc.h> |
| 8 | + |
| 9 | +/ { |
| 10 | + zephyr,user { |
| 11 | + io-channels = <&adc0 3>, <&adc0 4>, <&adc0 12>; |
| 12 | + }; |
| 13 | +}; |
| 14 | + |
| 15 | +&pinctrl { |
| 16 | + adc0_default: adc0_default { |
| 17 | + group0 { |
| 18 | + /* Allocate odd Analog bus 0 on GPIO port B to IADC |
| 19 | + * for access to pin PB3. |
| 20 | + * Allocate odd Analog bus 1 on GPIO port A to IADC |
| 21 | + * for access to pin PA7. |
| 22 | + * Allocate even Analog bus 0 on GPIO port C/D to IADC |
| 23 | + * for access to pin PD2. |
| 24 | + */ |
| 25 | + silabs,analog-bus = <ABUS_BODD0_IADC0>, |
| 26 | + <ABUS_AODD1_IADC0>, |
| 27 | + <ABUS_CDEVEN0_IADC0>; |
| 28 | + }; |
| 29 | + }; |
| 30 | +}; |
| 31 | + |
| 32 | +&adc0 { |
| 33 | + pinctrl-0 = <&adc0_default>; |
| 34 | + pinctrl-names = "default"; |
| 35 | + #address-cells = <1>; |
| 36 | + #size-cells = <0>; |
| 37 | + status = "okay"; |
| 38 | + |
| 39 | + channel@3 { |
| 40 | + reg = <3>; |
| 41 | + zephyr,gain = "ADC_GAIN_1"; |
| 42 | + zephyr,reference = "ADC_REF_INTERNAL"; |
| 43 | + zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; |
| 44 | + zephyr,resolution = <12>; |
| 45 | + zephyr,input-positive = <IADC_INPUT_AVDD>; |
| 46 | + }; |
| 47 | + |
| 48 | + channel@4 { |
| 49 | + reg = <4>; |
| 50 | + zephyr,gain = "ADC_GAIN_1"; |
| 51 | + zephyr,reference = "ADC_REF_VDD_1"; |
| 52 | + zephyr,vref-mv = <3300>; |
| 53 | + zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; |
| 54 | + zephyr,resolution = <12>; |
| 55 | + zephyr,input-positive = <IADC_INPUT_PB3>; |
| 56 | + }; |
| 57 | + |
| 58 | + channel@c { |
| 59 | + reg = <12>; |
| 60 | + zephyr,gain = "ADC_GAIN_1"; |
| 61 | + zephyr,reference = "ADC_REF_VDD_1"; |
| 62 | + zephyr,vref-mv = <3300>; |
| 63 | + zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; |
| 64 | + zephyr,resolution = <12>; |
| 65 | + zephyr,input-positive = <IADC_INPUT_PA7>; /* WPK EXP HEADER 13 */ |
| 66 | + zephyr,input-negative = <IADC_INPUT_PD2>; /* WPK EXP HEADER 9 */ |
| 67 | + }; |
| 68 | +}; |
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