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- /*
- * [partely copied from arch/arm/cpu/arm926ejs/at91/arm9260_devices.c]
- *
- * (C) Copyright 2011
- * Andreas Bießmann <andreas@biessmann.org>
- *
- * (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/clk.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_set_a_periph(AT91_PIO_PORTA, 17, 1); /* TXD0 */
- at91_set_a_periph(AT91_PIO_PORTA, 18, PUP); /* RXD0 */
- at91_periph_clk_enable(ATMEL_ID_USART0);
- }
- void at91_serial1_hw_init(void)
- {
- at91_set_a_periph(AT91_PIO_PORTB, 20, PUP); /* RXD1 */
- at91_set_a_periph(AT91_PIO_PORTB, 21, 1); /* TXD1 */
- at91_periph_clk_enable(ATMEL_ID_USART1);
- }
- void at91_serial2_hw_init(void)
- {
- at91_set_a_periph(AT91_PIO_PORTA, 22, PUP); /* RXD2 */
- at91_set_a_periph(AT91_PIO_PORTA, 23, 1); /* TXD2 */
- at91_periph_clk_enable(ATMEL_ID_USART2);
- }
- void at91_seriald_hw_init(void)
- {
- at91_set_a_periph(AT91_PIO_PORTA, 30, PUP); /* DRXD */
- at91_set_a_periph(AT91_PIO_PORTA, 31, 1); /* DTXD */
- /* writing SYS to PCER has no effect on AT91RM9200 */
- }
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