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/*
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/gpio.h>
/*
* if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all
* peripheral pins. Good to have if hardware is soldered optionally
* or in case of SPI no slave is selected. Avoid lines to float
* needlessly. Use a short local PUP define.
*
* Due to errata "TXD floats when CTS is inactive" pullups are always
* on for TXD pins.
*/
#ifdef CONFIG_AT91_GPIO_PULLUP
# define PUP CONFIG_AT91_GPIO_PULLUP
#else
# define PUP 0
#endif
void at91_serial0_hw_init(void)
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 6, 1); /* TXD0 */
at91_set_a_periph(AT91_PIO_PORTA, 7, PUP); /* RXD0 */
writel(1 << ATMEL_ID_USART0, &pmc->pcer);
}
void at91_serial1_hw_init(void)
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 11, 1); /* TXD1 */
at91_set_a_periph(AT91_PIO_PORTA, 12, PUP); /* RXD1 */
writel(1 << ATMEL_ID_USART1, &pmc->pcer);
}
void at91_serial2_hw_init(void)
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 13, 1); /* TXD2 */
at91_set_a_periph(AT91_PIO_PORTA, 14, PUP); /* RXD2 */
writel(1 << ATMEL_ID_USART2, &pmc->pcer);
}
void at91_seriald_hw_init(void)
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 21, PUP); /* DRXD */
at91_set_a_periph(AT91_PIO_PORTA, 22, 1); /* DTXD */
writel(1 << ATMEL_ID_SYS, &pmc->pcer);
}
#if defined(CONFIG_HAS_DATAFLASH) || defined(CONFIG_ATMEL_SPI)
void at91_spi0_hw_init(unsigned long cs_mask)
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTA, 25, PUP); /* SPI0_MISO */
at91_set_a_periph(AT91_PIO_PORTA, 26, PUP); /* SPI0_MOSI */
at91_set_a_periph(AT91_PIO_PORTA, 27, PUP); /* SPI0_SPCK */
/* Enable clock */
writel(1 << ATMEL_ID_SPI, &pmc->pcer);
if (cs_mask & (1 << 0)) {
at91_set_a_periph(AT91_PIO_PORTA, 28, 1);
}
if (cs_mask & (1 << 1)) {
at91_set_b_periph(AT91_PIO_PORTB, 7, 1);
}
if (cs_mask & (1 << 2)) {
at91_set_a_periph(AT91_PIO_PORTD, 8, 1);
}
if (cs_mask & (1 << 3)) {
at91_set_b_periph(AT91_PIO_PORTD, 9, 1);
}
if (cs_mask & (1 << 4)) {
at91_set_pio_output(AT91_PIO_PORTA, 28, 1);
}
if (cs_mask & (1 << 5)) {
at91_set_pio_output(AT91_PIO_PORTB, 7, 1);
}
if (cs_mask & (1 << 6)) {
at91_set_pio_output(AT91_PIO_PORTD, 8, 1);
}
if (cs_mask & (1 << 7)) {
at91_set_pio_output(AT91_PIO_PORTD, 9, 1);
}
}
#endif
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