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git.ipfire.org Git - people/ms/u-boot.git/blob - arch/arm/mach-at91/arm926ejs/at91sam9rl_devices.c
857c864068194513d5166aa960d3eecafdc420d9
2 * (C) Copyright 2007-2008
3 * Stelian Pop <stelian@popies.net>
4 * Lead Tech Design <www.leadtechdesign.com>
6 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/at91_common.h>
12 #include <asm/arch/at91_pmc.h>
13 #include <asm/arch/gpio.h>
16 * if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all
17 * peripheral pins. Good to have if hardware is soldered optionally
18 * or in case of SPI no slave is selected. Avoid lines to float
19 * needlessly. Use a short local PUP define.
21 * Due to errata "TXD floats when CTS is inactive" pullups are always
24 #ifdef CONFIG_AT91_GPIO_PULLUP
25 # define PUP CONFIG_AT91_GPIO_PULLUP
30 void at91_serial0_hw_init(void)
32 at91_pmc_t
*pmc
= (at91_pmc_t
*) ATMEL_BASE_PMC
;
34 at91_set_a_periph(AT91_PIO_PORTA
, 6, 1); /* TXD0 */
35 at91_set_a_periph(AT91_PIO_PORTA
, 7, PUP
); /* RXD0 */
36 writel(1 << ATMEL_ID_USART0
, &pmc
->pcer
);
39 void at91_serial1_hw_init(void)
41 at91_pmc_t
*pmc
= (at91_pmc_t
*) ATMEL_BASE_PMC
;
43 at91_set_a_periph(AT91_PIO_PORTA
, 11, 1); /* TXD1 */
44 at91_set_a_periph(AT91_PIO_PORTA
, 12, PUP
); /* RXD1 */
45 writel(1 << ATMEL_ID_USART1
, &pmc
->pcer
);
48 void at91_serial2_hw_init(void)
50 at91_pmc_t
*pmc
= (at91_pmc_t
*) ATMEL_BASE_PMC
;
52 at91_set_a_periph(AT91_PIO_PORTA
, 13, 1); /* TXD2 */
53 at91_set_a_periph(AT91_PIO_PORTA
, 14, PUP
); /* RXD2 */
54 writel(1 << ATMEL_ID_USART2
, &pmc
->pcer
);
57 void at91_seriald_hw_init(void)
59 at91_pmc_t
*pmc
= (at91_pmc_t
*) ATMEL_BASE_PMC
;
61 at91_set_a_periph(AT91_PIO_PORTA
, 21, PUP
); /* DRXD */
62 at91_set_a_periph(AT91_PIO_PORTA
, 22, 1); /* DTXD */
63 writel(1 << ATMEL_ID_SYS
, &pmc
->pcer
);
66 #if defined(CONFIG_HAS_DATAFLASH) || defined(CONFIG_ATMEL_SPI)
67 void at91_spi0_hw_init(unsigned long cs_mask
)
69 at91_pmc_t
*pmc
= (at91_pmc_t
*) ATMEL_BASE_PMC
;
71 at91_set_a_periph(AT91_PIO_PORTA
, 25, PUP
); /* SPI0_MISO */
72 at91_set_a_periph(AT91_PIO_PORTA
, 26, PUP
); /* SPI0_MOSI */
73 at91_set_a_periph(AT91_PIO_PORTA
, 27, PUP
); /* SPI0_SPCK */
76 writel(1 << ATMEL_ID_SPI
, &pmc
->pcer
);
78 if (cs_mask
& (1 << 0)) {
79 at91_set_a_periph(AT91_PIO_PORTA
, 28, 1);
81 if (cs_mask
& (1 << 1)) {
82 at91_set_b_periph(AT91_PIO_PORTB
, 7, 1);
84 if (cs_mask
& (1 << 2)) {
85 at91_set_a_periph(AT91_PIO_PORTD
, 8, 1);
87 if (cs_mask
& (1 << 3)) {
88 at91_set_b_periph(AT91_PIO_PORTD
, 9, 1);
90 if (cs_mask
& (1 << 4)) {
91 at91_set_pio_output(AT91_PIO_PORTA
, 28, 1);
93 if (cs_mask
& (1 << 5)) {
94 at91_set_pio_output(AT91_PIO_PORTB
, 7, 1);
96 if (cs_mask
& (1 << 6)) {
97 at91_set_pio_output(AT91_PIO_PORTD
, 8, 1);
99 if (cs_mask
& (1 << 7)) {
100 at91_set_pio_output(AT91_PIO_PORTD
, 9, 1);
105 #ifdef CONFIG_GENERIC_ATMEL_MCI
106 void at91_mci_hw_init(void)
108 struct at91_pmc
*pmc
= (struct at91_pmc
*)ATMEL_BASE_PMC
;
110 at91_set_a_periph(AT91_PIO_PORTA
, 2, 0); /* MCI CLK */
111 at91_set_a_periph(AT91_PIO_PORTA
, 1, 0); /* MCI CDA */
112 at91_set_a_periph(AT91_PIO_PORTA
, 0, 0); /* MCI DA0 */
113 at91_set_a_periph(AT91_PIO_PORTA
, 3, 0); /* MCI DA1 */
114 at91_set_a_periph(AT91_PIO_PORTA
, 4, 0); /* MCI DA2 */
115 at91_set_a_periph(AT91_PIO_PORTA
, 5, 0); /* MCI DA3 */
118 writel(1 << ATMEL_ID_MCI
, &pmc
->pcer
);