/*
* (C) Copyright 2007-2008
- * Stelian Pop <stelian.pop@leadtechdesign.com>
+ * Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*
* (C) Copyright 2009-2011
* Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
* esd electronic system design gmbh <www.esd.eu>
*
- * 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/io.h>
-#include <asm/arch/hardware.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
-#include <asm/arch/at91_pio.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, 26, 1); /* TXD0 */
- at91_set_a_periph(AT91_PIO_PORTA, 27, 0); /* RXD0 */
+ at91_set_a_periph(AT91_PIO_PORTA, 27, PUP); /* RXD0 */
writel(1 << ATMEL_ID_USART0, &pmc->pcer);
}
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTD, 0, 1); /* TXD1 */
- at91_set_a_periph(AT91_PIO_PORTD, 1, 0); /* RXD1 */
+ at91_set_a_periph(AT91_PIO_PORTD, 1, PUP); /* RXD1 */
writel(1 << ATMEL_ID_USART1, &pmc->pcer);
}
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
at91_set_a_periph(AT91_PIO_PORTD, 2, 1); /* TXD2 */
- at91_set_a_periph(AT91_PIO_PORTD, 3, 0); /* RXD2 */
+ at91_set_a_periph(AT91_PIO_PORTD, 3, PUP); /* RXD2 */
writel(1 << ATMEL_ID_USART2, &pmc->pcer);
}
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
- at91_set_a_periph(AT91_PIO_PORTC, 30, 0); /* DRXD */
+ at91_set_a_periph(AT91_PIO_PORTC, 30, PUP); /* DRXD */
at91_set_a_periph(AT91_PIO_PORTC, 31, 1); /* DTXD */
writel(1 << ATMEL_ID_SYS, &pmc->pcer);
}
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
- at91_set_b_periph(AT91_PIO_PORTA, 0, 0); /* SPI0_MISO */
- at91_set_b_periph(AT91_PIO_PORTA, 1, 0); /* SPI0_MOSI */
- at91_set_b_periph(AT91_PIO_PORTA, 2, 0); /* SPI0_SPCK */
+ at91_set_b_periph(AT91_PIO_PORTA, 0, PUP); /* SPI0_MISO */
+ at91_set_b_periph(AT91_PIO_PORTA, 1, PUP); /* SPI0_MOSI */
+ at91_set_b_periph(AT91_PIO_PORTA, 2, PUP); /* SPI0_SPCK */
/* Enable clock */
writel(1 << ATMEL_ID_SPI0, &pmc->pcer);
{
at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
- at91_set_a_periph(AT91_PIO_PORTB, 12, 0); /* SPI1_MISO */
- at91_set_a_periph(AT91_PIO_PORTB, 13, 0); /* SPI1_MOSI */
- at91_set_a_periph(AT91_PIO_PORTB, 14, 0); /* SPI1_SPCK */
+ at91_set_a_periph(AT91_PIO_PORTB, 12, PUP); /* SPI1_MISO */
+ at91_set_a_periph(AT91_PIO_PORTB, 13, PUP); /* SPI1_MOSI */
+ at91_set_a_periph(AT91_PIO_PORTB, 14, PUP); /* SPI1_SPCK */
/* Enable clock */
writel(1 << ATMEL_ID_SPI1, &pmc->pcer);
}
#endif
+#if defined(CONFIG_GENERIC_ATMEL_MCI)
+void at91_mci_hw_init(void)
+{
+ /* Enable mci clock */
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+ writel(1 << ATMEL_ID_MCI1, &pmc->pcer);
+
+ at91_set_a_periph(AT91_PIO_PORTA, 6, PUP); /* MCI1_CK */
+
+#if defined(CONFIG_ATMEL_MCI_PORTB)
+ at91_set_a_periph(AT91_PIO_PORTA, 21, PUP); /* MCI1_CDB */
+ at91_set_a_periph(AT91_PIO_PORTA, 22, PUP); /* MCI1_DB0 */
+ at91_set_a_periph(AT91_PIO_PORTA, 23, PUP); /* MCI1_DB1 */
+ at91_set_a_periph(AT91_PIO_PORTA, 24, PUP); /* MCI1_DB2 */
+ at91_set_a_periph(AT91_PIO_PORTA, 25, PUP); /* MCI1_DB3 */
+#else
+ at91_set_a_periph(AT91_PIO_PORTA, 7, PUP); /* MCI1_CDA */
+ at91_set_a_periph(AT91_PIO_PORTA, 8, PUP); /* MCI1_DA0 */
+ at91_set_a_periph(AT91_PIO_PORTA, 9, PUP); /* MCI1_DA1 */
+ at91_set_a_periph(AT91_PIO_PORTA, 10, PUP); /* MCI1_DA2 */
+ at91_set_a_periph(AT91_PIO_PORTA, 11, PUP); /* MCI1_DA3 */
+#endif
+}
+#endif
+
#ifdef CONFIG_MACB
void at91_macb_hw_init(void)
{
projects / karo-tx-uboot.git / blobdiff