2 * arch/arm/mach-at91rm9200/at91sam9260.c
4 * Copyright (C) 2006 SAN People
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
13 #include <linux/module.h>
15 #include <asm/mach/arch.h>
16 #include <asm/mach/map.h>
17 #include <asm/arch/at91sam9260.h>
18 #include <asm/arch/at91_pmc.h>
19 #include <asm/arch/at91_rstc.h>
24 static struct map_desc at91sam9260_io_desc[] __initdata = {
26 .virtual = AT91_VA_BASE_SYS,
27 .pfn = __phys_to_pfn(AT91_BASE_SYS),
31 .virtual = AT91_IO_VIRT_BASE - AT91SAM9260_SRAM0_SIZE,
32 .pfn = __phys_to_pfn(AT91SAM9260_SRAM0_BASE),
33 .length = AT91SAM9260_SRAM0_SIZE,
36 .virtual = AT91_IO_VIRT_BASE - AT91SAM9260_SRAM0_SIZE - AT91SAM9260_SRAM1_SIZE,
37 .pfn = __phys_to_pfn(AT91SAM9260_SRAM1_BASE),
38 .length = AT91SAM9260_SRAM1_SIZE,
43 /* --------------------------------------------------------------------
45 * -------------------------------------------------------------------- */
48 * The peripheral clocks.
50 static struct clk pioA_clk = {
52 .pmc_mask = 1 << AT91SAM9260_ID_PIOA,
53 .type = CLK_TYPE_PERIPHERAL,
55 static struct clk pioB_clk = {
57 .pmc_mask = 1 << AT91SAM9260_ID_PIOB,
58 .type = CLK_TYPE_PERIPHERAL,
60 static struct clk pioC_clk = {
62 .pmc_mask = 1 << AT91SAM9260_ID_PIOC,
63 .type = CLK_TYPE_PERIPHERAL,
65 static struct clk adc_clk = {
67 .pmc_mask = 1 << AT91SAM9260_ID_ADC,
68 .type = CLK_TYPE_PERIPHERAL,
70 static struct clk usart0_clk = {
72 .pmc_mask = 1 << AT91SAM9260_ID_US0,
73 .type = CLK_TYPE_PERIPHERAL,
75 static struct clk usart1_clk = {
77 .pmc_mask = 1 << AT91SAM9260_ID_US1,
78 .type = CLK_TYPE_PERIPHERAL,
80 static struct clk usart2_clk = {
82 .pmc_mask = 1 << AT91SAM9260_ID_US2,
83 .type = CLK_TYPE_PERIPHERAL,
85 static struct clk mmc_clk = {
87 .pmc_mask = 1 << AT91SAM9260_ID_MCI,
88 .type = CLK_TYPE_PERIPHERAL,
90 static struct clk udc_clk = {
92 .pmc_mask = 1 << AT91SAM9260_ID_UDP,
93 .type = CLK_TYPE_PERIPHERAL,
95 static struct clk twi_clk = {
97 .pmc_mask = 1 << AT91SAM9260_ID_TWI,
98 .type = CLK_TYPE_PERIPHERAL,
100 static struct clk spi0_clk = {
102 .pmc_mask = 1 << AT91SAM9260_ID_SPI0,
103 .type = CLK_TYPE_PERIPHERAL,
105 static struct clk spi1_clk = {
107 .pmc_mask = 1 << AT91SAM9260_ID_SPI1,
108 .type = CLK_TYPE_PERIPHERAL,
110 static struct clk ohci_clk = {
112 .pmc_mask = 1 << AT91SAM9260_ID_UHP,
113 .type = CLK_TYPE_PERIPHERAL,
115 static struct clk ether_clk = {
117 .pmc_mask = 1 << AT91SAM9260_ID_EMAC,
118 .type = CLK_TYPE_PERIPHERAL,
120 static struct clk isi_clk = {
122 .pmc_mask = 1 << AT91SAM9260_ID_ISI,
123 .type = CLK_TYPE_PERIPHERAL,
125 static struct clk usart3_clk = {
126 .name = "usart3_clk",
127 .pmc_mask = 1 << AT91SAM9260_ID_US3,
128 .type = CLK_TYPE_PERIPHERAL,
130 static struct clk usart4_clk = {
131 .name = "usart4_clk",
132 .pmc_mask = 1 << AT91SAM9260_ID_US4,
133 .type = CLK_TYPE_PERIPHERAL,
135 static struct clk usart5_clk = {
136 .name = "usart5_clk",
137 .pmc_mask = 1 << AT91SAM9260_ID_US5,
138 .type = CLK_TYPE_PERIPHERAL,
141 static struct clk *periph_clocks[] __initdata = {
167 * The two programmable clocks.
168 * You must configure pin multiplexing to bring these signals out.
170 static struct clk pck0 = {
172 .pmc_mask = AT91_PMC_PCK0,
173 .type = CLK_TYPE_PROGRAMMABLE,
176 static struct clk pck1 = {
178 .pmc_mask = AT91_PMC_PCK1,
179 .type = CLK_TYPE_PROGRAMMABLE,
183 static void __init at91sam9260_register_clocks(void)
187 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
188 clk_register(periph_clocks[i]);
194 /* --------------------------------------------------------------------
196 * -------------------------------------------------------------------- */
198 static struct at91_gpio_bank at91sam9260_gpio[] = {
200 .id = AT91SAM9260_ID_PIOA,
204 .id = AT91SAM9260_ID_PIOB,
208 .id = AT91SAM9260_ID_PIOC,
214 static void at91sam9260_reset(void)
216 at91_sys_write(AT91_RSTC_CR, (0xA5 << 24) | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
220 /* --------------------------------------------------------------------
221 * AT91SAM9260 processor initialization
222 * -------------------------------------------------------------------- */
224 void __init at91sam9260_initialize(unsigned long main_clock)
226 /* Map peripherals */
227 iotable_init(at91sam9260_io_desc, ARRAY_SIZE(at91sam9260_io_desc));
229 at91_arch_reset = at91sam9260_reset;
230 at91_extern_irq = (1 << AT91SAM9260_ID_IRQ0) | (1 << AT91SAM9260_ID_IRQ1)
231 | (1 << AT91SAM9260_ID_IRQ2);
233 /* Init clock subsystem */
234 at91_clock_init(main_clock);
236 /* Register the processor-specific clocks */
237 at91sam9260_register_clocks();
239 /* Register GPIO subsystem */
240 at91_gpio_init(at91sam9260_gpio, 3);
243 /* --------------------------------------------------------------------
244 * Interrupt initialization
245 * -------------------------------------------------------------------- */
248 * The default interrupt priority levels (0 = lowest, 7 = highest).
250 static unsigned int at91sam9260_default_irq_priority[NR_AIC_IRQS] __initdata = {
251 7, /* Advanced Interrupt Controller */
252 7, /* System Peripherals */
253 0, /* Parallel IO Controller A */
254 0, /* Parallel IO Controller B */
255 0, /* Parallel IO Controller C */
256 0, /* Analog-to-Digital Converter */
260 0, /* Multimedia Card Interface */
261 4, /* USB Device Port */
262 0, /* Two-Wire Interface */
263 6, /* Serial Peripheral Interface 0 */
264 6, /* Serial Peripheral Interface 1 */
265 5, /* Serial Synchronous Controller */
268 0, /* Timer Counter 0 */
269 0, /* Timer Counter 1 */
270 0, /* Timer Counter 2 */
271 3, /* USB Host port */
273 0, /* Image Sensor Interface */
277 0, /* Timer Counter 3 */
278 0, /* Timer Counter 4 */
279 0, /* Timer Counter 5 */
280 0, /* Advanced Interrupt Controller */
281 0, /* Advanced Interrupt Controller */
282 0, /* Advanced Interrupt Controller */
285 void __init at91sam9260_init_interrupts(unsigned int priority[NR_AIC_IRQS])
288 priority = at91sam9260_default_irq_priority;
290 /* Initialize the AIC interrupt controller */
291 at91_aic_init(priority);
293 /* Enable GPIO interrupts */
294 at91_gpio_irq_setup();