1 /*
2  * Copyright (c) 2022 Vestas Wind Systems A/S
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  */
6 #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_GPIO_ESPRESSIF_ESP32_GPIO_H_
7 #define ZEPHYR_INCLUDE_DT_BINDINGS_GPIO_ESPRESSIF_ESP32_GPIO_H_
8 
9 /**
10  * @name GPIO drive strength flags
11  *
12  * The drive strength flags are a Zephyr specific extension of the standard GPIO
13  * flags specified by the Linux GPIO binding. Only applicable for Espressif
14  * ESP32 SoCs.
15  *
16  * The interface supports two different drive strengths:
17  * `DFLT` - The lowest drive strength supported by the HW
18  * `ALT` - The highest drive strength supported by the HW
19  *
20  * @{
21  */
22 /** @cond INTERNAL_HIDDEN */
23 #define ESP32_GPIO_DS_POS 9
24 #define ESP32_GPIO_DS_MASK (0x3U << ESP32_GPIO_DS_POS)
25 /** @endcond */
26 
27 /** Default drive strength. */
28 #define ESP32_GPIO_DS_DFLT (0x0U << ESP32_GPIO_DS_POS)
29 
30 /** Alternative drive strength. */
31 #define ESP32_GPIO_DS_ALT (0x3U << ESP32_GPIO_DS_POS)
32 
33 /** @} */
34 
35 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_GPIO_ESPRESSIF_ESP32_GPIO_H_ */
36