| # SPDX-FileCopyrightText: Copyright (c) 2025 Carl Zeiss Meditec AG |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: | |
| Allegro A4979 microstepping stepper motor driver. |
| A4979 is a flexible microstepping motor driver with built-in translator for easy operation. |
| It is designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step |
| modes. |
| |
| Example: |
| a4979: a4979 { |
| status = "okay"; |
| compatible = "allegro,a4979"; |
| micro-step-res = <2>; |
| reset-gpios = <&gpiod 10 GPIO_ACTIVE_HIGH>; |
| dir-gpios = <&gpiod 14 GPIO_ACTIVE_HIGH>; |
| step-gpios = <&gpiod 15 GPIO_ACTIVE_HIGH>; |
| en-gpios = <&gpiod 11 GPIO_ACTIVE_HIGH>; |
| m0-gpios = <&gpiod 13 0>; |
| m1-gpios = <&gpiod 12 0>; |
| counter = <&counter5>; |
| }; |
| |
| compatible: "allegro,a4979" |
| |
| include: |
| - name: stepper-controller.yaml |
| - name: step-dir-timing.yaml |
| |
| properties: |
| step-width-ns: |
| default: 1000 |
| |
| m0-gpios: |
| required: true |
| type: phandle-array |
| description: Microstep configuration pin 0. |
| |
| m1-gpios: |
| required: true |
| type: phandle-array |
| description: Microstep configuration pin 1. |
| |
| reset-gpios: |
| type: phandle-array |
| required: true |
| description: Reset pin |
