2 * arch/arm/mach-at91/at91rm9200.c
4 * Copyright (C) 2005 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/at91rm9200.h>
18 #include <asm/arch/at91_pmc.h>
19 #include <asm/arch/at91_st.h>
24 static struct map_desc at91rm9200_io_desc[] __initdata = {
26 .virtual = AT91_VA_BASE_SYS,
27 .pfn = __phys_to_pfn(AT91_BASE_SYS),
31 .virtual = AT91_VA_BASE_EMAC,
32 .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
36 .virtual = AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
37 .pfn = __phys_to_pfn(AT91RM9200_SRAM_BASE),
38 .length = AT91RM9200_SRAM_SIZE,
43 /* --------------------------------------------------------------------
45 * -------------------------------------------------------------------- */
48 * The peripheral clocks.
50 static struct clk udc_clk = {
52 .pmc_mask = 1 << AT91RM9200_ID_UDP,
53 .type = CLK_TYPE_PERIPHERAL,
55 static struct clk ohci_clk = {
57 .pmc_mask = 1 << AT91RM9200_ID_UHP,
58 .type = CLK_TYPE_PERIPHERAL,
60 static struct clk ether_clk = {
62 .pmc_mask = 1 << AT91RM9200_ID_EMAC,
63 .type = CLK_TYPE_PERIPHERAL,
65 static struct clk mmc_clk = {
67 .pmc_mask = 1 << AT91RM9200_ID_MCI,
68 .type = CLK_TYPE_PERIPHERAL,
70 static struct clk twi_clk = {
72 .pmc_mask = 1 << AT91RM9200_ID_TWI,
73 .type = CLK_TYPE_PERIPHERAL,
75 static struct clk usart0_clk = {
77 .pmc_mask = 1 << AT91RM9200_ID_US0,
78 .type = CLK_TYPE_PERIPHERAL,
80 static struct clk usart1_clk = {
82 .pmc_mask = 1 << AT91RM9200_ID_US1,
83 .type = CLK_TYPE_PERIPHERAL,
85 static struct clk usart2_clk = {
87 .pmc_mask = 1 << AT91RM9200_ID_US2,
88 .type = CLK_TYPE_PERIPHERAL,
90 static struct clk usart3_clk = {
92 .pmc_mask = 1 << AT91RM9200_ID_US3,
93 .type = CLK_TYPE_PERIPHERAL,
95 static struct clk spi_clk = {
97 .pmc_mask = 1 << AT91RM9200_ID_SPI,
98 .type = CLK_TYPE_PERIPHERAL,
100 static struct clk pioA_clk = {
102 .pmc_mask = 1 << AT91RM9200_ID_PIOA,
103 .type = CLK_TYPE_PERIPHERAL,
105 static struct clk pioB_clk = {
107 .pmc_mask = 1 << AT91RM9200_ID_PIOB,
108 .type = CLK_TYPE_PERIPHERAL,
110 static struct clk pioC_clk = {
112 .pmc_mask = 1 << AT91RM9200_ID_PIOC,
113 .type = CLK_TYPE_PERIPHERAL,
115 static struct clk pioD_clk = {
117 .pmc_mask = 1 << AT91RM9200_ID_PIOD,
118 .type = CLK_TYPE_PERIPHERAL,
120 static struct clk ssc0_clk = {
122 .pmc_mask = 1 << AT91RM9200_ID_SSC0,
123 .type = CLK_TYPE_PERIPHERAL,
125 static struct clk ssc1_clk = {
127 .pmc_mask = 1 << AT91RM9200_ID_SSC1,
128 .type = CLK_TYPE_PERIPHERAL,
130 static struct clk ssc2_clk = {
132 .pmc_mask = 1 << AT91RM9200_ID_SSC2,
133 .type = CLK_TYPE_PERIPHERAL,
135 static struct clk tc0_clk = {
137 .pmc_mask = 1 << AT91RM9200_ID_TC0,
138 .type = CLK_TYPE_PERIPHERAL,
140 static struct clk tc1_clk = {
142 .pmc_mask = 1 << AT91RM9200_ID_TC1,
143 .type = CLK_TYPE_PERIPHERAL,
145 static struct clk tc2_clk = {
147 .pmc_mask = 1 << AT91RM9200_ID_TC2,
148 .type = CLK_TYPE_PERIPHERAL,
150 static struct clk tc3_clk = {
152 .pmc_mask = 1 << AT91RM9200_ID_TC3,
153 .type = CLK_TYPE_PERIPHERAL,
155 static struct clk tc4_clk = {
157 .pmc_mask = 1 << AT91RM9200_ID_TC4,
158 .type = CLK_TYPE_PERIPHERAL,
160 static struct clk tc5_clk = {
162 .pmc_mask = 1 << AT91RM9200_ID_TC5,
163 .type = CLK_TYPE_PERIPHERAL,
166 static struct clk *periph_clocks[] __initdata = {
194 * The four programmable clocks.
195 * You must configure pin multiplexing to bring these signals out.
197 static struct clk pck0 = {
199 .pmc_mask = AT91_PMC_PCK0,
200 .type = CLK_TYPE_PROGRAMMABLE,
203 static struct clk pck1 = {
205 .pmc_mask = AT91_PMC_PCK1,
206 .type = CLK_TYPE_PROGRAMMABLE,
209 static struct clk pck2 = {
211 .pmc_mask = AT91_PMC_PCK2,
212 .type = CLK_TYPE_PROGRAMMABLE,
215 static struct clk pck3 = {
217 .pmc_mask = AT91_PMC_PCK3,
218 .type = CLK_TYPE_PROGRAMMABLE,
222 static void __init at91rm9200_register_clocks(void)
226 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
227 clk_register(periph_clocks[i]);
235 /* --------------------------------------------------------------------
237 * -------------------------------------------------------------------- */
239 static struct at91_gpio_bank at91rm9200_gpio[] = {
241 .id = AT91RM9200_ID_PIOA,
245 .id = AT91RM9200_ID_PIOB,
249 .id = AT91RM9200_ID_PIOC,
253 .id = AT91RM9200_ID_PIOD,
259 static void at91rm9200_reset(void)
262 * Perform a hardware reset with the use of the Watchdog timer.
264 at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
265 at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
269 /* --------------------------------------------------------------------
270 * AT91RM9200 processor initialization
271 * -------------------------------------------------------------------- */
272 void __init at91rm9200_initialize(unsigned long main_clock, unsigned short banks)
274 /* Map peripherals */
275 iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
277 at91_arch_reset = at91rm9200_reset;
278 at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
279 | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
280 | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
281 | (1 << AT91RM9200_ID_IRQ6);
283 /* Init clock subsystem */
284 at91_clock_init(main_clock);
286 /* Register the processor-specific clocks */
287 at91rm9200_register_clocks();
289 /* Initialize GPIO subsystem */
290 at91_gpio_init(at91rm9200_gpio, banks);
294 /* --------------------------------------------------------------------
295 * Interrupt initialization
296 * -------------------------------------------------------------------- */
299 * The default interrupt priority levels (0 = lowest, 7 = highest).
301 static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
302 7, /* Advanced Interrupt Controller (FIQ) */
303 7, /* System Peripherals */
304 0, /* Parallel IO Controller A */
305 0, /* Parallel IO Controller B */
306 0, /* Parallel IO Controller C */
307 0, /* Parallel IO Controller D */
312 0, /* Multimedia Card Interface */
313 4, /* USB Device Port */
314 0, /* Two-Wire Interface */
315 6, /* Serial Peripheral Interface */
316 5, /* Serial Synchronous Controller 0 */
317 5, /* Serial Synchronous Controller 1 */
318 5, /* Serial Synchronous Controller 2 */
319 0, /* Timer Counter 0 */
320 0, /* Timer Counter 1 */
321 0, /* Timer Counter 2 */
322 0, /* Timer Counter 3 */
323 0, /* Timer Counter 4 */
324 0, /* Timer Counter 5 */
325 3, /* USB Host port */
326 3, /* Ethernet MAC */
327 0, /* Advanced Interrupt Controller (IRQ0) */
328 0, /* Advanced Interrupt Controller (IRQ1) */
329 0, /* Advanced Interrupt Controller (IRQ2) */
330 0, /* Advanced Interrupt Controller (IRQ3) */
331 0, /* Advanced Interrupt Controller (IRQ4) */
332 0, /* Advanced Interrupt Controller (IRQ5) */
333 0 /* Advanced Interrupt Controller (IRQ6) */
336 void __init at91rm9200_init_interrupts(unsigned int priority[NR_AIC_IRQS])
339 priority = at91rm9200_default_irq_priority;
341 /* Initialize the AIC interrupt controller */
342 at91_aic_init(priority);
344 /* Enable GPIO interrupts */
345 at91_gpio_irq_setup();