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feat(dt-bindings): describe ST GPIO banks and config

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Describe GPIO banks configs so that it can be used in
an STM32MP device-tree file.

Signed-off-by: Pascal Paillet <p.paillet@st.com>
Change-Id: If5dd05aae314cbb3189eb02c9fe555b832ac2bdb
This commit is contained in:
Pascal Paillet 2022-03-15 15:20:00 +01:00 • committed by Yann Gautier
parent a6e01be250
commit deb9c864ea
1 changed files with 41 additions and 0 deletions
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41
include/dt-bindings/gpio/stm32-gpio.h Normal file
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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
/*
* Copyright (C) 2024 STMicroelectronics - All Rights Reserved
* Author: Paillet Pascal <p.paillet@foss.st.com> for STMicroelectronics.
*/
#ifndef DT_BINDINGS_STM32_GPIO_H
#define DT_BINDINGS_STM32_GPIO_H
/* Bank IDs used in GPIO driver API */
#define GPIO_BANK_A 0U
#define GPIO_BANK_B 1U
#define GPIO_BANK_C 2U
#define GPIO_BANK_D 3U
#define GPIO_BANK_E 4U
#define GPIO_BANK_F 5U
#define GPIO_BANK_G 6U
#define GPIO_BANK_H 7U
#define GPIO_BANK_I 8U
#define GPIO_BANK_J 9U
#define GPIO_BANK_K 10U
#define GPIO_BANK_Z 25U
/* Bit 0 is used to set GPIO in input mode */
#define GPIOF_DIR_OUT 0x0
#define GPIOF_DIR_IN 0x1
/* Bit 1 is used to set GPIO high level during init */
#define GPIOF_INIT_LOW 0x0
#define GPIOF_INIT_HIGH 0x2
#define GPIOF_IN (GPIOF_DIR_IN)
#define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW)
#define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH)
/* Bit 2 is used to set GPIO pull up */
#define GPIOF_PULL_UP 0x4
/* Bit 3 is used to set GPIO pull down */
#define GPIOF_PULL_DOWN 0x8
#endif /* DT_BINDINGS_STM32_GPIO_H */