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>
16 #include <asm/mach/arch.h>
17 #include <asm/mach/map.h>
18 #include <mach/at91rm9200.h>
19 #include <mach/at91_pmc.h>
20 #include <mach/at91_st.h>
27 static struct map_desc at91rm9200_io_desc[] __initdata = {
29 .virtual = AT91_VA_BASE_EMAC,
30 .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
34 .virtual = AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
35 .pfn = __phys_to_pfn(AT91RM9200_SRAM_BASE),
36 .length = AT91RM9200_SRAM_SIZE,
41 /* --------------------------------------------------------------------
43 * -------------------------------------------------------------------- */
46 * The peripheral clocks.
48 static struct clk udc_clk = {
50 .pmc_mask = 1 << AT91RM9200_ID_UDP,
51 .type = CLK_TYPE_PERIPHERAL,
53 static struct clk ohci_clk = {
55 .pmc_mask = 1 << AT91RM9200_ID_UHP,
56 .type = CLK_TYPE_PERIPHERAL,
58 static struct clk ether_clk = {
60 .pmc_mask = 1 << AT91RM9200_ID_EMAC,
61 .type = CLK_TYPE_PERIPHERAL,
63 static struct clk mmc_clk = {
65 .pmc_mask = 1 << AT91RM9200_ID_MCI,
66 .type = CLK_TYPE_PERIPHERAL,
68 static struct clk twi_clk = {
70 .pmc_mask = 1 << AT91RM9200_ID_TWI,
71 .type = CLK_TYPE_PERIPHERAL,
73 static struct clk usart0_clk = {
75 .pmc_mask = 1 << AT91RM9200_ID_US0,
76 .type = CLK_TYPE_PERIPHERAL,
78 static struct clk usart1_clk = {
80 .pmc_mask = 1 << AT91RM9200_ID_US1,
81 .type = CLK_TYPE_PERIPHERAL,
83 static struct clk usart2_clk = {
85 .pmc_mask = 1 << AT91RM9200_ID_US2,
86 .type = CLK_TYPE_PERIPHERAL,
88 static struct clk usart3_clk = {
90 .pmc_mask = 1 << AT91RM9200_ID_US3,
91 .type = CLK_TYPE_PERIPHERAL,
93 static struct clk spi_clk = {
95 .pmc_mask = 1 << AT91RM9200_ID_SPI,
96 .type = CLK_TYPE_PERIPHERAL,
98 static struct clk pioA_clk = {
100 .pmc_mask = 1 << AT91RM9200_ID_PIOA,
101 .type = CLK_TYPE_PERIPHERAL,
103 static struct clk pioB_clk = {
105 .pmc_mask = 1 << AT91RM9200_ID_PIOB,
106 .type = CLK_TYPE_PERIPHERAL,
108 static struct clk pioC_clk = {
110 .pmc_mask = 1 << AT91RM9200_ID_PIOC,
111 .type = CLK_TYPE_PERIPHERAL,
113 static struct clk pioD_clk = {
115 .pmc_mask = 1 << AT91RM9200_ID_PIOD,
116 .type = CLK_TYPE_PERIPHERAL,
118 static struct clk ssc0_clk = {
120 .pmc_mask = 1 << AT91RM9200_ID_SSC0,
121 .type = CLK_TYPE_PERIPHERAL,
123 static struct clk ssc1_clk = {
125 .pmc_mask = 1 << AT91RM9200_ID_SSC1,
126 .type = CLK_TYPE_PERIPHERAL,
128 static struct clk ssc2_clk = {
130 .pmc_mask = 1 << AT91RM9200_ID_SSC2,
131 .type = CLK_TYPE_PERIPHERAL,
133 static struct clk tc0_clk = {
135 .pmc_mask = 1 << AT91RM9200_ID_TC0,
136 .type = CLK_TYPE_PERIPHERAL,
138 static struct clk tc1_clk = {
140 .pmc_mask = 1 << AT91RM9200_ID_TC1,
141 .type = CLK_TYPE_PERIPHERAL,
143 static struct clk tc2_clk = {
145 .pmc_mask = 1 << AT91RM9200_ID_TC2,
146 .type = CLK_TYPE_PERIPHERAL,
148 static struct clk tc3_clk = {
150 .pmc_mask = 1 << AT91RM9200_ID_TC3,
151 .type = CLK_TYPE_PERIPHERAL,
153 static struct clk tc4_clk = {
155 .pmc_mask = 1 << AT91RM9200_ID_TC4,
156 .type = CLK_TYPE_PERIPHERAL,
158 static struct clk tc5_clk = {
160 .pmc_mask = 1 << AT91RM9200_ID_TC5,
161 .type = CLK_TYPE_PERIPHERAL,
164 static struct clk *periph_clocks[] __initdata = {
191 static struct clk_lookup periph_clocks_lookups[] = {
192 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
193 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
194 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
195 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
196 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
197 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
198 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
199 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
200 CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
203 static struct clk_lookup usart_clocks_lookups[] = {
204 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
205 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
206 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
207 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
208 CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
212 * The four programmable clocks.
213 * You must configure pin multiplexing to bring these signals out.
215 static struct clk pck0 = {
217 .pmc_mask = AT91_PMC_PCK0,
218 .type = CLK_TYPE_PROGRAMMABLE,
221 static struct clk pck1 = {
223 .pmc_mask = AT91_PMC_PCK1,
224 .type = CLK_TYPE_PROGRAMMABLE,
227 static struct clk pck2 = {
229 .pmc_mask = AT91_PMC_PCK2,
230 .type = CLK_TYPE_PROGRAMMABLE,
233 static struct clk pck3 = {
235 .pmc_mask = AT91_PMC_PCK3,
236 .type = CLK_TYPE_PROGRAMMABLE,
240 static void __init at91rm9200_register_clocks(void)
244 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
245 clk_register(periph_clocks[i]);
247 clkdev_add_table(periph_clocks_lookups,
248 ARRAY_SIZE(periph_clocks_lookups));
249 clkdev_add_table(usart_clocks_lookups,
250 ARRAY_SIZE(usart_clocks_lookups));
258 static struct clk_lookup console_clock_lookup;
260 void __init at91rm9200_set_console_clock(int id)
262 if (id >= ARRAY_SIZE(usart_clocks_lookups))
265 console_clock_lookup.con_id = "usart";
266 console_clock_lookup.clk = usart_clocks_lookups[id].clk;
267 clkdev_add(&console_clock_lookup);
270 /* --------------------------------------------------------------------
272 * -------------------------------------------------------------------- */
274 static struct at91_gpio_bank at91rm9200_gpio[] = {
276 .id = AT91RM9200_ID_PIOA,
280 .id = AT91RM9200_ID_PIOB,
284 .id = AT91RM9200_ID_PIOC,
288 .id = AT91RM9200_ID_PIOD,
294 static void at91rm9200_reset(void)
297 * Perform a hardware reset with the use of the Watchdog timer.
299 at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
300 at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
304 EXPORT_SYMBOL(rm9200_type);
306 void __init at91rm9200_set_type(int type)
311 /* --------------------------------------------------------------------
312 * AT91RM9200 processor initialization
313 * -------------------------------------------------------------------- */
314 static void __init at91rm9200_map_io(void)
316 /* Map peripherals */
317 iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
320 static void __init at91rm9200_initialize(unsigned long main_clock)
322 at91_arch_reset = at91rm9200_reset;
323 at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
324 | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
325 | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
326 | (1 << AT91RM9200_ID_IRQ6);
328 /* Init clock subsystem */
329 at91_clock_init(main_clock);
331 /* Register the processor-specific clocks */
332 at91rm9200_register_clocks();
334 /* Initialize GPIO subsystem */
335 at91_gpio_init(at91rm9200_gpio,
336 cpu_is_at91rm9200_bga() ? AT91RM9200_BGA : AT91RM9200_PQFP);
340 /* --------------------------------------------------------------------
341 * Interrupt initialization
342 * -------------------------------------------------------------------- */
345 * The default interrupt priority levels (0 = lowest, 7 = highest).
347 static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
348 7, /* Advanced Interrupt Controller (FIQ) */
349 7, /* System Peripherals */
350 1, /* Parallel IO Controller A */
351 1, /* Parallel IO Controller B */
352 1, /* Parallel IO Controller C */
353 1, /* Parallel IO Controller D */
358 0, /* Multimedia Card Interface */
359 2, /* USB Device Port */
360 6, /* Two-Wire Interface */
361 5, /* Serial Peripheral Interface */
362 4, /* Serial Synchronous Controller 0 */
363 4, /* Serial Synchronous Controller 1 */
364 4, /* Serial Synchronous Controller 2 */
365 0, /* Timer Counter 0 */
366 0, /* Timer Counter 1 */
367 0, /* Timer Counter 2 */
368 0, /* Timer Counter 3 */
369 0, /* Timer Counter 4 */
370 0, /* Timer Counter 5 */
371 2, /* USB Host port */
372 3, /* Ethernet MAC */
373 0, /* Advanced Interrupt Controller (IRQ0) */
374 0, /* Advanced Interrupt Controller (IRQ1) */
375 0, /* Advanced Interrupt Controller (IRQ2) */
376 0, /* Advanced Interrupt Controller (IRQ3) */
377 0, /* Advanced Interrupt Controller (IRQ4) */
378 0, /* Advanced Interrupt Controller (IRQ5) */
379 0 /* Advanced Interrupt Controller (IRQ6) */
382 void __init at91rm9200_init_interrupts(unsigned int priority[NR_AIC_IRQS])
385 priority = at91rm9200_default_irq_priority;
387 /* Initialize the AIC interrupt controller */
388 at91_aic_init(priority);
390 /* Enable GPIO interrupts */
391 at91_gpio_irq_setup();
394 struct at91_soc __initdata at91rm9200_soc = {
395 .map_io = at91rm9200_map_io,
396 .init = at91rm9200_initialize,