blob: 856239761b8068ca1559b19b1a671377c85c5178 [file] [log] [blame]
/*
* Copyright (c) 2016 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 V2M Beetle Board
*
* The ARM V2M Beetle Board has 4 GPIO controllers. These controllers
* are responsible for pin muxing, input/output, pull-up, etc.
*
* The GPIO controllers 2 and 3 are reserved and therefore not exposed by
* this driver.
*
* All GPIO controller exposed pins are exposed via the following sequence of
* pin numbers:
* Pins 0 - 15 are for GPIO0
* Pins 16 - 31 are for GPIO1
*
* For the exposed GPIO controllers ARM V2M Beetle 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)))
/*
* This is the mapping from the ARM V2M Beetle Board pins to GPIO
* controllers.
*
* D0 : P0_0
* D1 : P0_1
* D2 : P0_2
* D3 : P0_3
* D4 : P0_4
* D5 : P0_5
* D6 : P0_6
* D7 : P0_7
* D8 : P0_8
* D9 : P0_9
* D10 : P0_10
* D11 : P0_11
* D12 : P0_12
* D13 : P0_13
* D14 : P0_14
* D15 : P0_15
* D16 : P1_0
* D17 : P1_1
* D18 : P1_2
* D19 : P1_3
* D20 : P1_4
* D21 : P1_5
* D22 : P1_6
* D23 : P1_7
* D24 : P1_8
* D25 : P1_9
* D26 : P1_10
* D27 : P1_11
* D28 : P1_12
* D29 : P1_13
* D30 : P1_14
* D31 : P1_15
*
* UART_0_RX : D0
* UART_0_TX : D1
* SPI_0_CS : D10
* SPI_0_MOSI : D11
* SPI_0_MISO : D12
* SPI_0_SCLK : D13
* I2C_0_SCL : D14
* I2C_0_SDA : D15
* UART_1_RX : D16
* UART_1_TX : D17
* SPI_1_CS : D18
* SPI_1_MOSI : D19
* SPI_1_MISO : D20
* SPI_1_SCK : D21
* I2C_1_SDA : D22
* I2C_1_SCL : D23
*
*/
static void arm_v2m_beetle_pinmux_defaults(void)
{
uint32_t gpio_0 = 0U;
uint32_t gpio_1 = 0U;
/* Set GPIO Alternate Functions */
gpio_0 = (1<<0); /* Shield 0 UART 0 RXD */
gpio_0 |= (1<<1); /* Shield 0 UART 0 TXD */
gpio_0 |= (1<<14); /* Shield 0 I2C SDA SBCON2 */
gpio_0 |= (1<<15); /* Shield 0 I2C SCL SBCON2 */
gpio_0 |= (1<<10); /* Shield 0 SPI_3 nCS */
gpio_0 |= (1<<11); /* Shield 0 SPI_3 MOSI */
gpio_0 |= (1<<12); /* Shield 0 SPI_3 MISO */
gpio_0 |= (1<<13); /* Shield 0 SPI_3 SCK */
CMSDK_AHB_GPIO0_DEV->altfuncset = gpio_0;
gpio_1 = (1<<0); /* UART 1 RXD */
gpio_1 |= (1<<1); /* UART 1 TXD */
gpio_1 |= (1<<6); /* Shield 1 I2C SDA */
gpio_1 |= (1<<7); /* Shield 1 I2C SCL */
gpio_1 |= (1<<2); /* ADC SPI_1 nCS */
gpio_1 |= (1<<3); /* ADC SPI_1 MOSI */
gpio_1 |= (1<<4); /* ADC SPI_1 MISO */
gpio_1 |= (1<<5); /* ADC SPI_1 SCK */
gpio_1 |= (1<<8); /* QSPI CS 2 */
gpio_1 |= (1<<9); /* QSPI CS 1 */
gpio_1 |= (1<<10); /* QSPI IO 0 */
gpio_1 |= (1<<11); /* QSPI IO 1 */
gpio_1 |= (1<<12); /* QSPI IO 2 */
gpio_1 |= (1<<13); /* QSPI IO 3 */
gpio_1 |= (1<<14); /* QSPI SCK */
CMSDK_AHB_GPIO1_DEV->altfuncset = gpio_1;
/* Set the ARD_PWR_EN GPIO1[15] as an output */
CMSDK_AHB_GPIO1_DEV->outenableset |= (0x1 << 15);
/* Set on 3v3 (for ARDUINO HDR compliance) */
CMSDK_AHB_GPIO1_DEV->data |= (0x1 << 15);
}
static int arm_v2m_beetle_pinmux_init(void)
{
arm_v2m_beetle_pinmux_defaults();
return 0;
}
SYS_INIT(arm_v2m_beetle_pinmux_init, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);