blob: bc92dc747d19b45991ffd1ada69740ca33d6c06d [file] [log] [blame]
/*
* Copyright (c) 2018-2019 Linaro Limited
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/device.h>
#include <zephyr/init.h>
#include <zephyr/kernel.h>
#include <soc.h>
#include <zephyr/sys/sys_io.h>
#include <zephyr/drivers/gpio/gpio_cmsdk_ahb.h>
/**
* @brief Pinmux driver for ARM MPS2 AN521 Board
*
* The ARM MPS2 AN521 Board has 4 GPIO controllers. These controllers
* are responsible for pin muxing, input/output, pull-up, etc.
*
* All GPIO controller pins are exposed via the following sequence of pin
* numbers:
* Pins 0 - 15 are for GPIO0
* Pins 16 - 31 are for GPIO1
* Pins 32 - 47 are for GPIO2
* Pins 48 - 51 are for GPIO3
*
* For the GPIO controllers configuration ARM MPS2 AN521 Board follows the
* Arduino compliant pin out.
*/
#define CMSDK_AHB_GPIO0_DEV \
((volatile struct gpio_cmsdk_ahb *)DT_REG_ADDR(DT_NODELABEL(gpio0)))
#define CMSDK_AHB_GPIO1_DEV \
((volatile struct gpio_cmsdk_ahb *)DT_REG_ADDR(DT_NODELABEL(gpio1)))
#define CMSDK_AHB_GPIO2_DEV \
((volatile struct gpio_cmsdk_ahb *)DT_REG_ADDR(DT_NODELABEL(gpio2)))
#define CMSDK_AHB_GPIO3_DEV \
((volatile struct gpio_cmsdk_ahb *)DT_REG_ADDR(DT_NODELABEL(gpio3)))
/*
* This is the mapping from the ARM MPS2 AN521 Board pins to GPIO
* controllers.
*
* D0 : EXT_0
* D1 : EXT_4
* D2 : EXT_2
* D3 : EXT_3
* D4 : EXT_1
* D5 : EXT_6
* D6 : EXT_7
* D7 : EXT_8
* D8 : EXT_9
* D9 : EXT_10
* D10 : EXT_12
* D11 : EXT_13
* D12 : EXT_14
* D13 : EXT_11
* D14 : EXT_15
* D15 : EXT_5
* D16 : EXT_16
* D17 : EXT_17
* D18 : EXT_18
* D19 : EXT_19
* D20 : EXT_20
* D21 : EXT_21
* D22 : EXT_22
* D23 : EXT_23
* D24 : EXT_24
* D25 : EXT_25
* D26 : EXT_26
* D27 : EXT_30
* D28 : EXT_28
* D29 : EXT_29
* D30 : EXT_27
* D31 : EXT_32
* D32 : EXT_33
* D33 : EXT_34
* D34 : EXT_35
* D35 : EXT_36
* D36 : EXT_38
* D37 : EXT_39
* D38 : EXT_40
* D39 : EXT_44
* D40 : EXT_41
* D41 : EXT_31
* D42 : EXT_37
* D43 : EXT_42
* D44 : EXT_43
* D45 : EXT_45
* D46 : EXT_46
* D47 : EXT_47
* D48 : EXT_48
* D49 : EXT_49
* D50 : EXT_50
* D51 : EXT_51
*
* UART_3_RX : D0
* UART_3_TX : D1
* SPI_3_CS : D10
* SPI_3_MOSI : D11
* SPI_3_MISO : D12
* SPI_3_SCLK : D13
* I2C_3_SDA : D14
* I2C_3_SCL : D15
* UART_4_RX : D26
* UART_4_TX : D30
* SPI_4_CS : D36
* SPI_4_MOSI : D37
* SPI_4_MISO : D38
* SPI_4_SCK : D39
* I2C_4_SDA : D40
* I2C_4_SCL : D41
*
*/
static void arm_mps2_pinmux_defaults(void)
{
uint32_t gpio_0 = 0;
uint32_t gpio_1 = 0;
uint32_t gpio_2 = 0;
/* Set GPIO Alternate Functions */
gpio_0 = (1<<0) /* Shield 0 UART 3 RXD */
| (1<<4) /* Shield 0 UART 3 TXD */
| (1<<5) /* Shield 0 I2C SCL SBCON2 */
| (1<<15) /* Shield 0 I2C SDA SBCON2 */
| (1<<11) /* Shield 0 SPI 3 SCK */
| (1<<12) /* Shield 0 SPI 3 SS */
| (1<<13) /* Shield 0 SPI 3 MOSI */
| (1<<14); /* Shield 0 SPI 3 MISO */
CMSDK_AHB_GPIO0_DEV->altfuncset = gpio_0;
gpio_1 = (1<<10) /* Shield 1 UART 4 RXD */
| (1<<14) /* Shield 1 UART 4 TXD */
| (1<<15) /* Shield 1 I2C SCL SBCON3 */
| (1<<0) /* ADC SPI 2 SS */
| (1<<1) /* ADC SPI 2 MISO */
| (1<<2) /* ADC SPI 2 MOSI */
| (1<<3) /* ADC SPI 2 SCK */
| (1<<5) /* USER BUTTON 0 */
| (1<<6); /* USER BUTTON 1 */
CMSDK_AHB_GPIO1_DEV->altfuncset = gpio_1;
gpio_2 = (1<<9) /* Shield 1 I2C SDA SBCON3 */
| (1<<6) /* Shield 1 SPI 4 SS */
| (1<<7) /* Shield 1 SPI 4 MOSI */
| (1<<8) /* Shield 1 SPI 4 MISO */
| (1<<12); /* Shield 1 SPI 4 SCK */
CMSDK_AHB_GPIO2_DEV->altfuncset = gpio_2;
}
static int arm_mps2_pinmux_init(void)
{
arm_mps2_pinmux_defaults();
return 0;
}
SYS_INIT(arm_mps2_pinmux_init, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);