| # Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: | |
| Espressif's GDMA (General Direct Memory Access) Node |
| |
| General Direct Memory Access (GDMA) is a feature that allows |
| peripheral-to-memory, memory-to-peripheral, and memory-to-memory |
| data transfer at a high speed. |
| |
| The GDMA controller in ESP32-C3 has six independent channels, |
| three transmit channels and three receive channels. |
| |
| Every channel can be connected to different peripherals. |
| |
| ESP32C3's Peripherals with GDMA: |
| * SPI2 |
| * UHCI0 (UART0/UART1) |
| * I2S (Not Supported yet) |
| * AES (Not Supported yet) |
| * SHA (Not Supported yet) |
| * ADC |
| |
| The GDMA controller in ESP32-S3 has ten independent channels, |
| five transmit channels and five receive channels. Only six are |
| supported, meaning three transmit and three receive channels. |
| |
| ESP32S3's Peripherals with GDMA: |
| * SPI2 |
| * SPI3 |
| * UHCI0 |
| * I2S0 (Not Supported yet) |
| * I2S1 (Not Supported yet) |
| * LCD/CAM (Not Supported yet) |
| * AES (Not Supported yet) |
| * SHA (Not Supported yet) |
| * ADC (Not Supported yet) |
| * RMT (Not Supported yet) |
| |
| compatible: "espressif,esp32-gdma" |
| |
| include: dma-controller.yaml |
| |
| properties: |
| "#dma-cells": |
| const: 1 |
| |
| dma-cells: |
| - channel |
