2 * Chip-specific setup code for the AT91SAM9G45 family
4 * Copyright (C) 2009 Atmel Corporation.
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>
17 #include <asm/mach/arch.h>
18 #include <asm/mach/map.h>
19 #include <mach/at91sam9g45.h>
20 #include <mach/at91_pmc.h>
21 #include <mach/at91_rstc.h>
22 #include <mach/at91_shdwc.h>
28 static struct map_desc at91sam9g45_io_desc[] __initdata = {
30 .virtual = AT91_VA_BASE_SYS,
31 .pfn = __phys_to_pfn(AT91_BASE_SYS),
35 .virtual = AT91_IO_VIRT_BASE - AT91SAM9G45_SRAM_SIZE,
36 .pfn = __phys_to_pfn(AT91SAM9G45_SRAM_BASE),
37 .length = AT91SAM9G45_SRAM_SIZE,
42 /* --------------------------------------------------------------------
44 * -------------------------------------------------------------------- */
47 * The peripheral clocks.
49 static struct clk pioA_clk = {
51 .pmc_mask = 1 << AT91SAM9G45_ID_PIOA,
52 .type = CLK_TYPE_PERIPHERAL,
54 static struct clk pioB_clk = {
56 .pmc_mask = 1 << AT91SAM9G45_ID_PIOB,
57 .type = CLK_TYPE_PERIPHERAL,
59 static struct clk pioC_clk = {
61 .pmc_mask = 1 << AT91SAM9G45_ID_PIOC,
62 .type = CLK_TYPE_PERIPHERAL,
64 static struct clk pioDE_clk = {
66 .pmc_mask = 1 << AT91SAM9G45_ID_PIODE,
67 .type = CLK_TYPE_PERIPHERAL,
69 static struct clk usart0_clk = {
71 .pmc_mask = 1 << AT91SAM9G45_ID_US0,
72 .type = CLK_TYPE_PERIPHERAL,
74 static struct clk usart1_clk = {
76 .pmc_mask = 1 << AT91SAM9G45_ID_US1,
77 .type = CLK_TYPE_PERIPHERAL,
79 static struct clk usart2_clk = {
81 .pmc_mask = 1 << AT91SAM9G45_ID_US2,
82 .type = CLK_TYPE_PERIPHERAL,
84 static struct clk usart3_clk = {
86 .pmc_mask = 1 << AT91SAM9G45_ID_US3,
87 .type = CLK_TYPE_PERIPHERAL,
89 static struct clk mmc0_clk = {
91 .pmc_mask = 1 << AT91SAM9G45_ID_MCI0,
92 .type = CLK_TYPE_PERIPHERAL,
94 static struct clk twi0_clk = {
96 .pmc_mask = 1 << AT91SAM9G45_ID_TWI0,
97 .type = CLK_TYPE_PERIPHERAL,
99 static struct clk twi1_clk = {
101 .pmc_mask = 1 << AT91SAM9G45_ID_TWI1,
102 .type = CLK_TYPE_PERIPHERAL,
104 static struct clk spi0_clk = {
106 .pmc_mask = 1 << AT91SAM9G45_ID_SPI0,
107 .type = CLK_TYPE_PERIPHERAL,
109 static struct clk spi1_clk = {
111 .pmc_mask = 1 << AT91SAM9G45_ID_SPI1,
112 .type = CLK_TYPE_PERIPHERAL,
114 static struct clk ssc0_clk = {
116 .pmc_mask = 1 << AT91SAM9G45_ID_SSC0,
117 .type = CLK_TYPE_PERIPHERAL,
119 static struct clk ssc1_clk = {
121 .pmc_mask = 1 << AT91SAM9G45_ID_SSC1,
122 .type = CLK_TYPE_PERIPHERAL,
124 static struct clk tcb0_clk = {
126 .pmc_mask = 1 << AT91SAM9G45_ID_TCB,
127 .type = CLK_TYPE_PERIPHERAL,
129 static struct clk pwm_clk = {
131 .pmc_mask = 1 << AT91SAM9G45_ID_PWMC,
132 .type = CLK_TYPE_PERIPHERAL,
134 static struct clk tsc_clk = {
136 .pmc_mask = 1 << AT91SAM9G45_ID_TSC,
137 .type = CLK_TYPE_PERIPHERAL,
139 static struct clk dma_clk = {
141 .pmc_mask = 1 << AT91SAM9G45_ID_DMA,
142 .type = CLK_TYPE_PERIPHERAL,
144 static struct clk uhphs_clk = {
146 .pmc_mask = 1 << AT91SAM9G45_ID_UHPHS,
147 .type = CLK_TYPE_PERIPHERAL,
149 static struct clk lcdc_clk = {
151 .pmc_mask = 1 << AT91SAM9G45_ID_LCDC,
152 .type = CLK_TYPE_PERIPHERAL,
154 static struct clk ac97_clk = {
156 .pmc_mask = 1 << AT91SAM9G45_ID_AC97C,
157 .type = CLK_TYPE_PERIPHERAL,
159 static struct clk macb_clk = {
161 .pmc_mask = 1 << AT91SAM9G45_ID_EMAC,
162 .type = CLK_TYPE_PERIPHERAL,
164 static struct clk isi_clk = {
166 .pmc_mask = 1 << AT91SAM9G45_ID_ISI,
167 .type = CLK_TYPE_PERIPHERAL,
169 static struct clk udphs_clk = {
171 .pmc_mask = 1 << AT91SAM9G45_ID_UDPHS,
172 .type = CLK_TYPE_PERIPHERAL,
174 static struct clk mmc1_clk = {
176 .pmc_mask = 1 << AT91SAM9G45_ID_MCI1,
177 .type = CLK_TYPE_PERIPHERAL,
180 /* Video decoder clock - Only for sam9m10/sam9m11 */
181 static struct clk vdec_clk = {
183 .pmc_mask = 1 << AT91SAM9G45_ID_VDEC,
184 .type = CLK_TYPE_PERIPHERAL,
187 static struct clk *periph_clocks[] __initdata = {
217 static struct clk_lookup periph_clocks_lookups[] = {
218 /* One additional fake clock for ohci */
219 CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
220 CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk),
221 CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
222 CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
223 CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
224 CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
225 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
226 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
227 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),
228 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
229 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
230 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
233 static struct clk_lookup usart_clocks_lookups[] = {
234 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
235 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
236 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
237 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
238 CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
242 * The two programmable clocks.
243 * You must configure pin multiplexing to bring these signals out.
245 static struct clk pck0 = {
247 .pmc_mask = AT91_PMC_PCK0,
248 .type = CLK_TYPE_PROGRAMMABLE,
251 static struct clk pck1 = {
253 .pmc_mask = AT91_PMC_PCK1,
254 .type = CLK_TYPE_PROGRAMMABLE,
258 static void __init at91sam9g45_register_clocks(void)
262 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
263 clk_register(periph_clocks[i]);
265 clkdev_add_table(periph_clocks_lookups,
266 ARRAY_SIZE(periph_clocks_lookups));
267 clkdev_add_table(usart_clocks_lookups,
268 ARRAY_SIZE(usart_clocks_lookups));
270 if (cpu_is_at91sam9m10() || cpu_is_at91sam9m11())
271 clk_register(&vdec_clk);
277 static struct clk_lookup console_clock_lookup;
279 void __init at91sam9g45_set_console_clock(int id)
281 if (id >= ARRAY_SIZE(usart_clocks_lookups))
284 console_clock_lookup.con_id = "usart";
285 console_clock_lookup.clk = usart_clocks_lookups[id].clk;
286 clkdev_add(&console_clock_lookup);
289 /* --------------------------------------------------------------------
291 * -------------------------------------------------------------------- */
293 static struct at91_gpio_bank at91sam9g45_gpio[] = {
295 .id = AT91SAM9G45_ID_PIOA,
299 .id = AT91SAM9G45_ID_PIOB,
303 .id = AT91SAM9G45_ID_PIOC,
307 .id = AT91SAM9G45_ID_PIODE,
311 .id = AT91SAM9G45_ID_PIODE,
317 static void at91sam9g45_reset(void)
319 at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
322 static void at91sam9g45_poweroff(void)
324 at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
328 /* --------------------------------------------------------------------
329 * AT91SAM9G45 processor initialization
330 * -------------------------------------------------------------------- */
332 void __init at91sam9g45_map_io(void)
334 /* Map peripherals */
335 iotable_init(at91sam9g45_io_desc, ARRAY_SIZE(at91sam9g45_io_desc));
338 void __init at91sam9g45_initialize(unsigned long main_clock)
340 at91_arch_reset = at91sam9g45_reset;
341 pm_power_off = at91sam9g45_poweroff;
342 at91_extern_irq = (1 << AT91SAM9G45_ID_IRQ0);
344 /* Init clock subsystem */
345 at91_clock_init(main_clock);
347 /* Register the processor-specific clocks */
348 at91sam9g45_register_clocks();
350 /* Register GPIO subsystem */
351 at91_gpio_init(at91sam9g45_gpio, 5);
354 /* --------------------------------------------------------------------
355 * Interrupt initialization
356 * -------------------------------------------------------------------- */
359 * The default interrupt priority levels (0 = lowest, 7 = highest).
361 static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
362 7, /* Advanced Interrupt Controller (FIQ) */
363 7, /* System Peripherals */
364 1, /* Parallel IO Controller A */
365 1, /* Parallel IO Controller B */
366 1, /* Parallel IO Controller C */
367 1, /* Parallel IO Controller D and E */
373 0, /* Multimedia Card Interface 0 */
374 6, /* Two-Wire Interface 0 */
375 6, /* Two-Wire Interface 1 */
376 5, /* Serial Peripheral Interface 0 */
377 5, /* Serial Peripheral Interface 1 */
378 4, /* Serial Synchronous Controller 0 */
379 4, /* Serial Synchronous Controller 1 */
380 0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */
381 0, /* Pulse Width Modulation Controller */
382 0, /* Touch Screen Controller */
383 0, /* DMA Controller */
384 2, /* USB Host High Speed port */
385 3, /* LDC Controller */
386 5, /* AC97 Controller */
388 0, /* Image Sensor Interface */
389 2, /* USB Device High speed port */
391 0, /* Multimedia Card Interface 1 */
393 0, /* Advanced Interrupt Controller (IRQ0) */
396 void __init at91sam9g45_init_interrupts(unsigned int priority[NR_AIC_IRQS])
399 priority = at91sam9g45_default_irq_priority;
401 /* Initialize the AIC interrupt controller */
402 at91_aic_init(priority);
404 /* Enable GPIO interrupts */
405 at91_gpio_irq_setup();