/*
* (C) Copyright 2007-2008
- * Stelian Pop <stelian.pop@leadtechdesign.com>
+ * Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/gpio.h>
-#include <asm/arch/io.h>
+#include <asm/io.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 *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTB, 19, 1); /* TXD0 */
- at91_set_a_periph(AT91_PIO_PORTB, 18, 0); /* RXD0 */
- writel(1 << AT91SAM9G45_ID_US0, &pmc->pcer);
+ at91_set_a_periph(AT91_PIO_PORTB, 18, PUP); /* RXD0 */
+ writel(1 << ATMEL_ID_USART0, &pmc->pcer);
}
void at91_serial1_hw_init(void)
{
- at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTB, 4, 1); /* TXD1 */
- at91_set_a_periph(AT91_PIO_PORTB, 5, 0); /* RXD1 */
- writel(1 << AT91SAM9G45_ID_US1, &pmc->pcer);
+ at91_set_a_periph(AT91_PIO_PORTB, 5, PUP); /* RXD1 */
+ writel(1 << ATMEL_ID_USART1, &pmc->pcer);
}
void at91_serial2_hw_init(void)
{
- at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTD, 6, 1); /* TXD2 */
- at91_set_a_periph(AT91_PIO_PORTD, 7, 0); /* RXD2 */
- writel(1 << AT91SAM9G45_ID_US2, &pmc->pcer);
+ at91_set_a_periph(AT91_PIO_PORTD, 7, PUP); /* RXD2 */
+ writel(1 << ATMEL_ID_USART2, &pmc->pcer);
}
-void at91_serial3_hw_init(void)
+void at91_seriald_hw_init(void)
{
- at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTB, 12, 0); /* DRXD */
at91_set_a_periph(AT91_PIO_PORTB, 13, 1); /* DTXD */
- writel(1 << AT91_ID_SYS, &pmc->pcer);
-}
-
-void at91_serial_hw_init(void)
-{
-#ifdef CONFIG_USART0
- at91_serial0_hw_init();
-#endif
-
-#ifdef CONFIG_USART1
- at91_serial1_hw_init();
-#endif
-
-#ifdef CONFIG_USART2
- at91_serial2_hw_init();
-#endif
-
-#ifdef CONFIG_USART3 /* DBGU */
- at91_serial3_hw_init();
-#endif
+ writel(1 << ATMEL_ID_SYS, &pmc->pcer);
}
-#ifdef CONFIG_ATMEL_SPI
+#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 *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
- at91_set_a_periph(AT91_PIO_PORTB, 0, 0); /* SPI0_MISO */
- at91_set_a_periph(AT91_PIO_PORTB, 1, 0); /* SPI0_MOSI */
- at91_set_a_periph(AT91_PIO_PORTB, 2, 0); /* SPI0_SPCK */
+ at91_set_a_periph(AT91_PIO_PORTB, 0, PUP); /* SPI0_MISO */
+ at91_set_a_periph(AT91_PIO_PORTB, 1, PUP); /* SPI0_MOSI */
+ at91_set_a_periph(AT91_PIO_PORTB, 2, PUP); /* SPI0_SPCK */
/* Enable clock */
- writel(1 << AT91SAM9G45_ID_SPI0, &pmc->pcer);
+ writel(1 << ATMEL_ID_SPI0, &pmc->pcer);
if (cs_mask & (1 << 0)) {
- at91_set_a_periph(AT91_PIO_PORTB, 3, 0);
+ at91_set_a_periph(AT91_PIO_PORTB, 3, 1);
}
if (cs_mask & (1 << 1)) {
- at91_set_b_periph(AT91_PIO_PORTB, 18, 0);
+ at91_set_b_periph(AT91_PIO_PORTB, 18, 1);
}
if (cs_mask & (1 << 2)) {
- at91_set_b_periph(AT91_PIO_PORTB, 19, 0);
+ at91_set_b_periph(AT91_PIO_PORTB, 19, 1);
}
if (cs_mask & (1 << 3)) {
- at91_set_b_periph(AT91_PIO_PORTD, 27, 0);
+ at91_set_b_periph(AT91_PIO_PORTD, 27, 1);
}
if (cs_mask & (1 << 4)) {
- at91_set_pio_output(AT91_PIO_PORTB, 3, 0);
+ at91_set_pio_output(AT91_PIO_PORTB, 3, 1);
}
if (cs_mask & (1 << 5)) {
- at91_set_pio_output(AT91_PIO_PORTB, 18, 0);
+ at91_set_pio_output(AT91_PIO_PORTB, 18, 1);
}
if (cs_mask & (1 << 6)) {
- at91_set_pio_output(AT91_PIO_PORTB, 19, 0);
+ at91_set_pio_output(AT91_PIO_PORTB, 19, 1);
}
if (cs_mask & (1 << 7)) {
- at91_set_pio_output(AT91_PIO_PORTD, 27, 0);
+ at91_set_pio_output(AT91_PIO_PORTD, 27, 1);
}
}
void at91_spi1_hw_init(unsigned long cs_mask)
{
- at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
+ at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
- at91_set_a_periph(AT91_PIO_PORTB, 14, 0); /* SPI1_MISO */
- at91_set_a_periph(AT91_PIO_PORTB, 15, 0); /* SPI1_MOSI */
- at91_set_a_periph(AT91_PIO_PORTB, 16, 0); /* SPI1_SPCK */
+ at91_set_a_periph(AT91_PIO_PORTB, 14, PUP); /* SPI1_MISO */
+ at91_set_a_periph(AT91_PIO_PORTB, 15, PUP); /* SPI1_MOSI */
+ at91_set_a_periph(AT91_PIO_PORTB, 16, PUP); /* SPI1_SPCK */
/* Enable clock */
- writel(1 << AT91SAM9G45_ID_SPI1, &pmc->pcer);
+ writel(1 << ATMEL_ID_SPI1, &pmc->pcer);
if (cs_mask & (1 << 0)) {
- at91_set_a_periph(AT91_PIO_PORTB, 17, 0);
+ at91_set_a_periph(AT91_PIO_PORTB, 17, 1);
}
if (cs_mask & (1 << 1)) {
- at91_set_b_periph(AT91_PIO_PORTD, 28, 0);
+ at91_set_b_periph(AT91_PIO_PORTD, 28, 1);
}
if (cs_mask & (1 << 2)) {
- at91_set_a_periph(AT91_PIO_PORTD, 18, 0);
+ at91_set_a_periph(AT91_PIO_PORTD, 18, 1);
}
if (cs_mask & (1 << 3)) {
- at91_set_a_periph(AT91_PIO_PORTD, 19, 0);
+ at91_set_a_periph(AT91_PIO_PORTD, 19, 1);
}
if (cs_mask & (1 << 4)) {
- at91_set_pio_output(AT91_PIO_PORTB, 17, 0);
+ at91_set_pio_output(AT91_PIO_PORTB, 17, 1);
}
if (cs_mask & (1 << 5)) {
- at91_set_pio_output(AT91_PIO_PORTD, 28, 0);
+ at91_set_pio_output(AT91_PIO_PORTD, 28, 1);
}
if (cs_mask & (1 << 6)) {
- at91_set_pio_output(AT91_PIO_PORTD, 18, 0);
+ at91_set_pio_output(AT91_PIO_PORTD, 18, 1);
}
if (cs_mask & (1 << 7)) {
- at91_set_pio_output(AT91_PIO_PORTD, 19, 0);
+ at91_set_pio_output(AT91_PIO_PORTD, 19, 1);
}
}
projects / oweals / u-boot.git / blobdiff