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https://github.com/AsahiLinux/u-boot
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148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
/*
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* (C) Copyright 2007-2008
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* Stelian Pop <stelian.pop@leadtechdesign.com>
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* Lead Tech Design <www.leadtechdesign.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/at91_common.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/io.h>
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void at91_serial0_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
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at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_US0);
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}
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void at91_serial1_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
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at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_US1);
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}
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void at91_serial2_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
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at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_US2);
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}
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void at91_serial3_hw_init(void)
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{
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at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
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at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
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}
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void at91_serial_hw_init(void)
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{
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#ifdef CONFIG_USART0
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at91_serial0_hw_init();
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#endif
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#ifdef CONFIG_USART1
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at91_serial1_hw_init();
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#endif
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#ifdef CONFIG_USART2
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at91_serial2_hw_init();
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#endif
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#ifdef CONFIG_USART3 /* DBGU */
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at91_serial3_hw_init();
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#endif
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}
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#ifdef CONFIG_HAS_DATAFLASH
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void at91_spi0_hw_init(unsigned long cs_mask)
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{
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at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
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at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
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at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
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/* Enable clock */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_SPI0);
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if (cs_mask & (1 << 0)) {
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at91_set_A_periph(AT91_PIN_PA3, 1);
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}
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if (cs_mask & (1 << 1)) {
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at91_set_A_periph(AT91_PIN_PA4, 1);
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}
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if (cs_mask & (1 << 2)) {
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at91_set_A_periph(AT91_PIN_PA5, 1);
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}
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if (cs_mask & (1 << 3)) {
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at91_set_A_periph(AT91_PIN_PA6, 1);
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}
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if (cs_mask & (1 << 4)) {
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at91_set_gpio_output(AT91_PIN_PA3, 1);
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}
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if (cs_mask & (1 << 5)) {
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at91_set_gpio_output(AT91_PIN_PA4, 1);
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}
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if (cs_mask & (1 << 6)) {
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at91_set_gpio_output(AT91_PIN_PA5, 1);
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}
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if (cs_mask & (1 << 7)) {
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at91_set_gpio_output(AT91_PIN_PA6, 1);
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}
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}
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void at91_spi1_hw_init(unsigned long cs_mask)
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{
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at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */
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at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */
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at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */
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/* Enable clock */
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at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_SPI1);
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if (cs_mask & (1 << 0)) {
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at91_set_A_periph(AT91_PIN_PB28, 1);
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}
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if (cs_mask & (1 << 1)) {
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at91_set_B_periph(AT91_PIN_PA24, 1);
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}
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if (cs_mask & (1 << 2)) {
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at91_set_B_periph(AT91_PIN_PA25, 1);
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}
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if (cs_mask & (1 << 3)) {
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at91_set_A_periph(AT91_PIN_PA26, 1);
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}
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if (cs_mask & (1 << 4)) {
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at91_set_gpio_output(AT91_PIN_PB28, 1);
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}
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if (cs_mask & (1 << 5)) {
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at91_set_gpio_output(AT91_PIN_PA24, 1);
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}
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if (cs_mask & (1 << 6)) {
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at91_set_gpio_output(AT91_PIN_PA25, 1);
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}
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if (cs_mask & (1 << 7)) {
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at91_set_gpio_output(AT91_PIN_PA26, 1);
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}
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}
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#endif
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