2 * (C) Copyright 2007-2008
3 * Stelian Pop <stelian@popies.net>
4 * Lead Tech Design <www.leadtechdesign.com>
6 * (C) Copyright 2009-2011
7 * Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
8 * esd electronic system design gmbh <www.esd.eu>
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include <asm/arch/at91_common.h>
32 #include <asm/arch/at91_pmc.h>
33 #include <asm/arch/gpio.h>
36 * if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all
37 * peripheral pins. Good to have if hardware is soldered optionally
38 * or in case of SPI no slave is selected. Avoid lines to float
39 * needlessly. Use a short local PUP define.
41 * Due to errata "TXD floats when CTS is inactive" pullups are always
44 #ifdef CONFIG_AT91_GPIO_PULLUP
45 # define PUP CONFIG_AT91_GPIO_PULLUP
50 void at91_serial0_hw_init(void)
52 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
54 at91_set_a_periph(AT91_PIO_PORTA, 26, 1); /* TXD0 */
55 at91_set_a_periph(AT91_PIO_PORTA, 27, PUP); /* RXD0 */
56 writel(1 << ATMEL_ID_USART0, &pmc->pcer);
59 void at91_serial1_hw_init(void)
61 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
63 at91_set_a_periph(AT91_PIO_PORTD, 0, 1); /* TXD1 */
64 at91_set_a_periph(AT91_PIO_PORTD, 1, PUP); /* RXD1 */
65 writel(1 << ATMEL_ID_USART1, &pmc->pcer);
68 void at91_serial2_hw_init(void)
70 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
72 at91_set_a_periph(AT91_PIO_PORTD, 2, 1); /* TXD2 */
73 at91_set_a_periph(AT91_PIO_PORTD, 3, PUP); /* RXD2 */
74 writel(1 << ATMEL_ID_USART2, &pmc->pcer);
77 void at91_seriald_hw_init(void)
79 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
81 at91_set_a_periph(AT91_PIO_PORTC, 30, PUP); /* DRXD */
82 at91_set_a_periph(AT91_PIO_PORTC, 31, 1); /* DTXD */
83 writel(1 << ATMEL_ID_SYS, &pmc->pcer);
86 #if defined(CONFIG_HAS_DATAFLASH) || defined(CONFIG_ATMEL_SPI)
87 void at91_spi0_hw_init(unsigned long cs_mask)
89 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
91 at91_set_b_periph(AT91_PIO_PORTA, 0, PUP); /* SPI0_MISO */
92 at91_set_b_periph(AT91_PIO_PORTA, 1, PUP); /* SPI0_MOSI */
93 at91_set_b_periph(AT91_PIO_PORTA, 2, PUP); /* SPI0_SPCK */
96 writel(1 << ATMEL_ID_SPI0, &pmc->pcer);
98 if (cs_mask & (1 << 0)) {
99 at91_set_b_periph(AT91_PIO_PORTA, 5, 1);
101 if (cs_mask & (1 << 1)) {
102 at91_set_b_periph(AT91_PIO_PORTA, 3, 1);
104 if (cs_mask & (1 << 2)) {
105 at91_set_b_periph(AT91_PIO_PORTA, 4, 1);
107 if (cs_mask & (1 << 3)) {
108 at91_set_b_periph(AT91_PIO_PORTB, 11, 1);
110 if (cs_mask & (1 << 4)) {
111 at91_set_pio_output(AT91_PIO_PORTA, 5, 1);
113 if (cs_mask & (1 << 5)) {
114 at91_set_pio_output(AT91_PIO_PORTA, 3, 1);
116 if (cs_mask & (1 << 6)) {
117 at91_set_pio_output(AT91_PIO_PORTA, 4, 1);
119 if (cs_mask & (1 << 7)) {
120 at91_set_pio_output(AT91_PIO_PORTB, 11, 1);
124 void at91_spi1_hw_init(unsigned long cs_mask)
126 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
128 at91_set_a_periph(AT91_PIO_PORTB, 12, PUP); /* SPI1_MISO */
129 at91_set_a_periph(AT91_PIO_PORTB, 13, PUP); /* SPI1_MOSI */
130 at91_set_a_periph(AT91_PIO_PORTB, 14, PUP); /* SPI1_SPCK */
133 writel(1 << ATMEL_ID_SPI1, &pmc->pcer);
135 if (cs_mask & (1 << 0)) {
136 at91_set_a_periph(AT91_PIO_PORTB, 15, 1);
138 if (cs_mask & (1 << 1)) {
139 at91_set_a_periph(AT91_PIO_PORTB, 16, 1);
141 if (cs_mask & (1 << 2)) {
142 at91_set_a_periph(AT91_PIO_PORTB, 17, 1);
144 if (cs_mask & (1 << 3)) {
145 at91_set_a_periph(AT91_PIO_PORTB, 18, 1);
147 if (cs_mask & (1 << 4)) {
148 at91_set_pio_output(AT91_PIO_PORTB, 15, 1);
150 if (cs_mask & (1 << 5)) {
151 at91_set_pio_output(AT91_PIO_PORTB, 16, 1);
153 if (cs_mask & (1 << 6)) {
154 at91_set_pio_output(AT91_PIO_PORTB, 17, 1);
156 if (cs_mask & (1 << 7)) {
157 at91_set_pio_output(AT91_PIO_PORTB, 18, 1);
163 void at91_macb_hw_init(void)
165 at91_set_a_periph(AT91_PIO_PORTE, 21, 0); /* ETXCK_EREFCK */
166 at91_set_b_periph(AT91_PIO_PORTC, 25, 0); /* ERXDV */
167 at91_set_a_periph(AT91_PIO_PORTE, 25, 0); /* ERX0 */
168 at91_set_a_periph(AT91_PIO_PORTE, 26, 0); /* ERX1 */
169 at91_set_a_periph(AT91_PIO_PORTE, 27, 0); /* ERXER */
170 at91_set_a_periph(AT91_PIO_PORTE, 28, 0); /* ETXEN */
171 at91_set_a_periph(AT91_PIO_PORTE, 23, 0); /* ETX0 */
172 at91_set_a_periph(AT91_PIO_PORTE, 24, 0); /* ETX1 */
173 at91_set_a_periph(AT91_PIO_PORTE, 30, 0); /* EMDIO */
174 at91_set_a_periph(AT91_PIO_PORTE, 29, 0); /* EMDC */
177 at91_set_a_periph(AT91_PIO_PORTE, 22, 0); /* ECRS */
178 at91_set_b_periph(AT91_PIO_PORTC, 26, 0); /* ECOL */
179 at91_set_b_periph(AT91_PIO_PORTC, 22, 0); /* ERX2 */
180 at91_set_b_periph(AT91_PIO_PORTC, 23, 0); /* ERX3 */
181 at91_set_b_periph(AT91_PIO_PORTC, 27, 0); /* ERXCK */
182 at91_set_b_periph(AT91_PIO_PORTC, 20, 0); /* ETX2 */
183 at91_set_b_periph(AT91_PIO_PORTC, 21, 0); /* ETX3 */
184 at91_set_b_periph(AT91_PIO_PORTC, 24, 0); /* ETXER */
189 #ifdef CONFIG_USB_OHCI_NEW
190 void at91_uhp_hw_init(void)
192 /* Enable VBus on UHP ports */
193 at91_set_pio_output(AT91_PIO_PORTA, 21, 0);
194 at91_set_pio_output(AT91_PIO_PORTA, 24, 0);
198 #ifdef CONFIG_AT91_CAN
199 void at91_can_hw_init(void)
201 at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC;
203 at91_set_a_periph(AT91_PIO_PORTA, 13, 0); /* CAN_TX */
204 at91_set_a_periph(AT91_PIO_PORTA, 14, 1); /* CAN_RX */
207 writel(1 << ATMEL_ID_CAN, &pmc->pcer);