2 * arch/arm/mach-at91/at91sam9261.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/proc-fns.h>
17 #include <asm/mach/arch.h>
18 #include <asm/mach/map.h>
19 #include <asm/system_misc.h>
21 #include <mach/at91sam9261.h>
22 #include <mach/at91_pmc.h>
25 #include "at91_rstc.h"
31 /* --------------------------------------------------------------------
33 * -------------------------------------------------------------------- */
36 * The peripheral clocks.
38 static struct clk pioA_clk = {
40 .pmc_mask = 1 << AT91SAM9261_ID_PIOA,
41 .type = CLK_TYPE_PERIPHERAL,
43 static struct clk pioB_clk = {
45 .pmc_mask = 1 << AT91SAM9261_ID_PIOB,
46 .type = CLK_TYPE_PERIPHERAL,
48 static struct clk pioC_clk = {
50 .pmc_mask = 1 << AT91SAM9261_ID_PIOC,
51 .type = CLK_TYPE_PERIPHERAL,
53 static struct clk usart0_clk = {
55 .pmc_mask = 1 << AT91SAM9261_ID_US0,
56 .type = CLK_TYPE_PERIPHERAL,
58 static struct clk usart1_clk = {
60 .pmc_mask = 1 << AT91SAM9261_ID_US1,
61 .type = CLK_TYPE_PERIPHERAL,
63 static struct clk usart2_clk = {
65 .pmc_mask = 1 << AT91SAM9261_ID_US2,
66 .type = CLK_TYPE_PERIPHERAL,
68 static struct clk mmc_clk = {
70 .pmc_mask = 1 << AT91SAM9261_ID_MCI,
71 .type = CLK_TYPE_PERIPHERAL,
73 static struct clk udc_clk = {
75 .pmc_mask = 1 << AT91SAM9261_ID_UDP,
76 .type = CLK_TYPE_PERIPHERAL,
78 static struct clk twi_clk = {
80 .pmc_mask = 1 << AT91SAM9261_ID_TWI,
81 .type = CLK_TYPE_PERIPHERAL,
83 static struct clk spi0_clk = {
85 .pmc_mask = 1 << AT91SAM9261_ID_SPI0,
86 .type = CLK_TYPE_PERIPHERAL,
88 static struct clk spi1_clk = {
90 .pmc_mask = 1 << AT91SAM9261_ID_SPI1,
91 .type = CLK_TYPE_PERIPHERAL,
93 static struct clk ssc0_clk = {
95 .pmc_mask = 1 << AT91SAM9261_ID_SSC0,
96 .type = CLK_TYPE_PERIPHERAL,
98 static struct clk ssc1_clk = {
100 .pmc_mask = 1 << AT91SAM9261_ID_SSC1,
101 .type = CLK_TYPE_PERIPHERAL,
103 static struct clk ssc2_clk = {
105 .pmc_mask = 1 << AT91SAM9261_ID_SSC2,
106 .type = CLK_TYPE_PERIPHERAL,
108 static struct clk tc0_clk = {
110 .pmc_mask = 1 << AT91SAM9261_ID_TC0,
111 .type = CLK_TYPE_PERIPHERAL,
113 static struct clk tc1_clk = {
115 .pmc_mask = 1 << AT91SAM9261_ID_TC1,
116 .type = CLK_TYPE_PERIPHERAL,
118 static struct clk tc2_clk = {
120 .pmc_mask = 1 << AT91SAM9261_ID_TC2,
121 .type = CLK_TYPE_PERIPHERAL,
123 static struct clk ohci_clk = {
125 .pmc_mask = 1 << AT91SAM9261_ID_UHP,
126 .type = CLK_TYPE_PERIPHERAL,
128 static struct clk lcdc_clk = {
130 .pmc_mask = 1 << AT91SAM9261_ID_LCDC,
131 .type = CLK_TYPE_PERIPHERAL,
135 static struct clk hck0 = {
137 .pmc_mask = AT91_PMC_HCK0,
138 .type = CLK_TYPE_SYSTEM,
141 static struct clk hck1 = {
143 .pmc_mask = AT91_PMC_HCK1,
144 .type = CLK_TYPE_SYSTEM,
148 static struct clk *periph_clocks[] __initdata = {
171 static struct clk_lookup periph_clocks_lookups[] = {
172 CLKDEV_CON_DEV_ID("hclk", "at91sam9261-lcdfb.0", &hck1),
173 CLKDEV_CON_DEV_ID("hclk", "at91sam9g10-lcdfb.0", &hck1),
174 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
175 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
176 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
177 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
178 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
179 CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
180 CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
181 CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.2", &ssc2_clk),
182 CLKDEV_CON_DEV_ID("pclk", "fffbc000.ssc", &ssc0_clk),
183 CLKDEV_CON_DEV_ID("pclk", "fffc0000.ssc", &ssc1_clk),
184 CLKDEV_CON_DEV_ID("pclk", "fffc4000.ssc", &ssc2_clk),
185 CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &hck0),
186 CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9261.0", &twi_clk),
187 CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.0", &twi_clk),
188 CLKDEV_CON_ID("pioA", &pioA_clk),
189 CLKDEV_CON_ID("pioB", &pioB_clk),
190 CLKDEV_CON_ID("pioC", &pioC_clk),
193 static struct clk_lookup usart_clocks_lookups[] = {
194 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
195 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
196 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
197 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
201 * The four programmable clocks.
202 * You must configure pin multiplexing to bring these signals out.
204 static struct clk pck0 = {
206 .pmc_mask = AT91_PMC_PCK0,
207 .type = CLK_TYPE_PROGRAMMABLE,
210 static struct clk pck1 = {
212 .pmc_mask = AT91_PMC_PCK1,
213 .type = CLK_TYPE_PROGRAMMABLE,
216 static struct clk pck2 = {
218 .pmc_mask = AT91_PMC_PCK2,
219 .type = CLK_TYPE_PROGRAMMABLE,
222 static struct clk pck3 = {
224 .pmc_mask = AT91_PMC_PCK3,
225 .type = CLK_TYPE_PROGRAMMABLE,
229 static void __init at91sam9261_register_clocks(void)
233 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
234 clk_register(periph_clocks[i]);
236 clkdev_add_table(periph_clocks_lookups,
237 ARRAY_SIZE(periph_clocks_lookups));
238 clkdev_add_table(usart_clocks_lookups,
239 ARRAY_SIZE(usart_clocks_lookups));
250 /* --------------------------------------------------------------------
252 * -------------------------------------------------------------------- */
254 static struct at91_gpio_bank at91sam9261_gpio[] __initdata = {
256 .id = AT91SAM9261_ID_PIOA,
257 .regbase = AT91SAM9261_BASE_PIOA,
259 .id = AT91SAM9261_ID_PIOB,
260 .regbase = AT91SAM9261_BASE_PIOB,
262 .id = AT91SAM9261_ID_PIOC,
263 .regbase = AT91SAM9261_BASE_PIOC,
267 /* --------------------------------------------------------------------
268 * AT91SAM9261 processor initialization
269 * -------------------------------------------------------------------- */
271 static void __init at91sam9261_map_io(void)
273 if (cpu_is_at91sam9g10())
274 at91_init_sram(0, AT91SAM9G10_SRAM_BASE, AT91SAM9G10_SRAM_SIZE);
276 at91_init_sram(0, AT91SAM9261_SRAM_BASE, AT91SAM9261_SRAM_SIZE);
279 static void __init at91sam9261_ioremap_registers(void)
281 at91_ioremap_shdwc(AT91SAM9261_BASE_SHDWC);
282 at91_ioremap_rstc(AT91SAM9261_BASE_RSTC);
283 at91_ioremap_ramc(0, AT91SAM9261_BASE_SDRAMC, 512);
284 at91sam926x_ioremap_pit(AT91SAM9261_BASE_PIT);
285 at91sam9_ioremap_smc(0, AT91SAM9261_BASE_SMC);
286 at91_ioremap_matrix(AT91SAM9261_BASE_MATRIX);
289 static void __init at91sam9261_initialize(void)
291 arm_pm_idle = at91sam9_idle;
292 arm_pm_restart = at91sam9_alt_restart;
294 /* Register GPIO subsystem */
295 at91_gpio_init(at91sam9261_gpio, 3);
298 /* --------------------------------------------------------------------
299 * Interrupt initialization
300 * -------------------------------------------------------------------- */
303 * The default interrupt priority levels (0 = lowest, 7 = highest).
305 static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = {
306 7, /* Advanced Interrupt Controller */
307 7, /* System Peripherals */
308 1, /* Parallel IO Controller A */
309 1, /* Parallel IO Controller B */
310 1, /* Parallel IO Controller C */
315 0, /* Multimedia Card Interface */
316 2, /* USB Device Port */
317 6, /* Two-Wire Interface */
318 5, /* Serial Peripheral Interface 0 */
319 5, /* Serial Peripheral Interface 1 */
320 4, /* Serial Synchronous Controller 0 */
321 4, /* Serial Synchronous Controller 1 */
322 4, /* Serial Synchronous Controller 2 */
323 0, /* Timer Counter 0 */
324 0, /* Timer Counter 1 */
325 0, /* Timer Counter 2 */
326 2, /* USB Host port */
327 3, /* LCD Controller */
335 0, /* Advanced Interrupt Controller */
336 0, /* Advanced Interrupt Controller */
337 0, /* Advanced Interrupt Controller */
340 AT91_SOC_START(at91sam9261)
341 .map_io = at91sam9261_map_io,
342 .default_irq_priority = at91sam9261_default_irq_priority,
343 .extern_irq = (1 << AT91SAM9261_ID_IRQ0) | (1 << AT91SAM9261_ID_IRQ1)
344 | (1 << AT91SAM9261_ID_IRQ2),
345 .ioremap_registers = at91sam9261_ioremap_registers,
346 .register_clocks = at91sam9261_register_clocks,
347 .init = at91sam9261_initialize,