ARM: at91: make rtt register base soc independant
[deliverable/linux.git] / arch / arm / mach-at91 / at91sam9g45.c
CommitLineData
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1/*
2 * Chip-specific setup code for the AT91SAM9G45 family
3 *
4 * Copyright (C) 2009 Atmel Corporation.
5 *
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.
10 *
11 */
12
13#include <linux/module.h>
14#include <linux/pm.h>
f407c2e3 15#include <linux/dma-mapping.h>
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16
17#include <asm/irq.h>
18#include <asm/mach/arch.h>
19#include <asm/mach/map.h>
20#include <mach/at91sam9g45.h>
21#include <mach/at91_pmc.h>
22#include <mach/at91_rstc.h>
23#include <mach/at91_shdwc.h>
5f9f0a41 24#include <mach/cpu.h>
789b23bc 25
21d08b9d 26#include "soc.h"
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27#include "generic.h"
28#include "clock.h"
29
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30/* --------------------------------------------------------------------
31 * Clocks
32 * -------------------------------------------------------------------- */
33
34/*
35 * The peripheral clocks.
36 */
37static struct clk pioA_clk = {
38 .name = "pioA_clk",
39 .pmc_mask = 1 << AT91SAM9G45_ID_PIOA,
40 .type = CLK_TYPE_PERIPHERAL,
41};
42static struct clk pioB_clk = {
43 .name = "pioB_clk",
44 .pmc_mask = 1 << AT91SAM9G45_ID_PIOB,
45 .type = CLK_TYPE_PERIPHERAL,
46};
47static struct clk pioC_clk = {
48 .name = "pioC_clk",
49 .pmc_mask = 1 << AT91SAM9G45_ID_PIOC,
50 .type = CLK_TYPE_PERIPHERAL,
51};
52static struct clk pioDE_clk = {
53 .name = "pioDE_clk",
54 .pmc_mask = 1 << AT91SAM9G45_ID_PIODE,
55 .type = CLK_TYPE_PERIPHERAL,
56};
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57static struct clk trng_clk = {
58 .name = "trng_clk",
59 .pmc_mask = 1 << AT91SAM9G45_ID_TRNG,
60 .type = CLK_TYPE_PERIPHERAL,
61};
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62static struct clk usart0_clk = {
63 .name = "usart0_clk",
64 .pmc_mask = 1 << AT91SAM9G45_ID_US0,
65 .type = CLK_TYPE_PERIPHERAL,
66};
67static struct clk usart1_clk = {
68 .name = "usart1_clk",
69 .pmc_mask = 1 << AT91SAM9G45_ID_US1,
70 .type = CLK_TYPE_PERIPHERAL,
71};
72static struct clk usart2_clk = {
73 .name = "usart2_clk",
74 .pmc_mask = 1 << AT91SAM9G45_ID_US2,
75 .type = CLK_TYPE_PERIPHERAL,
76};
77static struct clk usart3_clk = {
78 .name = "usart3_clk",
79 .pmc_mask = 1 << AT91SAM9G45_ID_US3,
80 .type = CLK_TYPE_PERIPHERAL,
81};
82static struct clk mmc0_clk = {
83 .name = "mci0_clk",
84 .pmc_mask = 1 << AT91SAM9G45_ID_MCI0,
85 .type = CLK_TYPE_PERIPHERAL,
86};
87static struct clk twi0_clk = {
88 .name = "twi0_clk",
89 .pmc_mask = 1 << AT91SAM9G45_ID_TWI0,
90 .type = CLK_TYPE_PERIPHERAL,
91};
92static struct clk twi1_clk = {
93 .name = "twi1_clk",
94 .pmc_mask = 1 << AT91SAM9G45_ID_TWI1,
95 .type = CLK_TYPE_PERIPHERAL,
96};
97static struct clk spi0_clk = {
98 .name = "spi0_clk",
99 .pmc_mask = 1 << AT91SAM9G45_ID_SPI0,
100 .type = CLK_TYPE_PERIPHERAL,
101};
102static struct clk spi1_clk = {
103 .name = "spi1_clk",
104 .pmc_mask = 1 << AT91SAM9G45_ID_SPI1,
105 .type = CLK_TYPE_PERIPHERAL,
106};
107static struct clk ssc0_clk = {
108 .name = "ssc0_clk",
109 .pmc_mask = 1 << AT91SAM9G45_ID_SSC0,
110 .type = CLK_TYPE_PERIPHERAL,
111};
112static struct clk ssc1_clk = {
113 .name = "ssc1_clk",
114 .pmc_mask = 1 << AT91SAM9G45_ID_SSC1,
115 .type = CLK_TYPE_PERIPHERAL,
116};
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117static struct clk tcb0_clk = {
118 .name = "tcb0_clk",
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119 .pmc_mask = 1 << AT91SAM9G45_ID_TCB,
120 .type = CLK_TYPE_PERIPHERAL,
121};
122static struct clk pwm_clk = {
123 .name = "pwm_clk",
124 .pmc_mask = 1 << AT91SAM9G45_ID_PWMC,
125 .type = CLK_TYPE_PERIPHERAL,
126};
127static struct clk tsc_clk = {
128 .name = "tsc_clk",
129 .pmc_mask = 1 << AT91SAM9G45_ID_TSC,
130 .type = CLK_TYPE_PERIPHERAL,
131};
132static struct clk dma_clk = {
133 .name = "dma_clk",
134 .pmc_mask = 1 << AT91SAM9G45_ID_DMA,
135 .type = CLK_TYPE_PERIPHERAL,
136};
137static struct clk uhphs_clk = {
138 .name = "uhphs_clk",
139 .pmc_mask = 1 << AT91SAM9G45_ID_UHPHS,
140 .type = CLK_TYPE_PERIPHERAL,
141};
142static struct clk lcdc_clk = {
143 .name = "lcdc_clk",
144 .pmc_mask = 1 << AT91SAM9G45_ID_LCDC,
145 .type = CLK_TYPE_PERIPHERAL,
146};
147static struct clk ac97_clk = {
148 .name = "ac97_clk",
149 .pmc_mask = 1 << AT91SAM9G45_ID_AC97C,
150 .type = CLK_TYPE_PERIPHERAL,
151};
152static struct clk macb_clk = {
153 .name = "macb_clk",
154 .pmc_mask = 1 << AT91SAM9G45_ID_EMAC,
155 .type = CLK_TYPE_PERIPHERAL,
156};
157static struct clk isi_clk = {
158 .name = "isi_clk",
159 .pmc_mask = 1 << AT91SAM9G45_ID_ISI,
160 .type = CLK_TYPE_PERIPHERAL,
161};
162static struct clk udphs_clk = {
163 .name = "udphs_clk",
164 .pmc_mask = 1 << AT91SAM9G45_ID_UDPHS,
165 .type = CLK_TYPE_PERIPHERAL,
166};
167static struct clk mmc1_clk = {
168 .name = "mci1_clk",
169 .pmc_mask = 1 << AT91SAM9G45_ID_MCI1,
170 .type = CLK_TYPE_PERIPHERAL,
171};
172
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173/* Video decoder clock - Only for sam9m10/sam9m11 */
174static struct clk vdec_clk = {
175 .name = "vdec_clk",
176 .pmc_mask = 1 << AT91SAM9G45_ID_VDEC,
177 .type = CLK_TYPE_PERIPHERAL,
178};
179
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180static struct clk *periph_clocks[] __initdata = {
181 &pioA_clk,
182 &pioB_clk,
183 &pioC_clk,
184 &pioDE_clk,
237a62a1 185 &trng_clk,
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186 &usart0_clk,
187 &usart1_clk,
188 &usart2_clk,
189 &usart3_clk,
190 &mmc0_clk,
191 &twi0_clk,
192 &twi1_clk,
193 &spi0_clk,
194 &spi1_clk,
195 &ssc0_clk,
196 &ssc1_clk,
ab64511c 197 &tcb0_clk,
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198 &pwm_clk,
199 &tsc_clk,
200 &dma_clk,
201 &uhphs_clk,
202 &lcdc_clk,
203 &ac97_clk,
204 &macb_clk,
205 &isi_clk,
206 &udphs_clk,
207 &mmc1_clk,
208 // irq0
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209};
210
211static struct clk_lookup periph_clocks_lookups[] = {
212 /* One additional fake clock for ohci */
213 CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
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214 CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk),
215 CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
216 CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
217 CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
218 CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
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219 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
220 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
221 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),
222 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
223 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
224 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
237a62a1 225 CLKDEV_CON_DEV_ID(NULL, "atmel-trng", &trng_clk),
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226 /* more usart lookup table for DT entries */
227 CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
228 CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk),
229 CLKDEV_CON_DEV_ID("usart", "fff90000.serial", &usart1_clk),
230 CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
231 CLKDEV_CON_DEV_ID("usart", "fff98000.serial", &usart3_clk),
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232 /* fake hclk clock */
233 CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &uhphs_clk),
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234};
235
236static struct clk_lookup usart_clocks_lookups[] = {
237 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
238 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
239 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
240 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
241 CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
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242};
243
244/*
245 * The two programmable clocks.
246 * You must configure pin multiplexing to bring these signals out.
247 */
248static struct clk pck0 = {
249 .name = "pck0",
250 .pmc_mask = AT91_PMC_PCK0,
251 .type = CLK_TYPE_PROGRAMMABLE,
252 .id = 0,
253};
254static struct clk pck1 = {
255 .name = "pck1",
256 .pmc_mask = AT91_PMC_PCK1,
257 .type = CLK_TYPE_PROGRAMMABLE,
258 .id = 1,
259};
260
261static void __init at91sam9g45_register_clocks(void)
262{
263 int i;
264
265 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
266 clk_register(periph_clocks[i]);
267
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268 clkdev_add_table(periph_clocks_lookups,
269 ARRAY_SIZE(periph_clocks_lookups));
270 clkdev_add_table(usart_clocks_lookups,
271 ARRAY_SIZE(usart_clocks_lookups));
272
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273 if (cpu_is_at91sam9m10() || cpu_is_at91sam9m11())
274 clk_register(&vdec_clk);
275
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276 clk_register(&pck0);
277 clk_register(&pck1);
278}
279
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280static struct clk_lookup console_clock_lookup;
281
282void __init at91sam9g45_set_console_clock(int id)
283{
284 if (id >= ARRAY_SIZE(usart_clocks_lookups))
285 return;
286
287 console_clock_lookup.con_id = "usart";
288 console_clock_lookup.clk = usart_clocks_lookups[id].clk;
289 clkdev_add(&console_clock_lookup);
290}
291
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292/* --------------------------------------------------------------------
293 * GPIO
294 * -------------------------------------------------------------------- */
295
296static struct at91_gpio_bank at91sam9g45_gpio[] = {
297 {
298 .id = AT91SAM9G45_ID_PIOA,
80e91cb8 299 .regbase = AT91SAM9G45_BASE_PIOA,
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300 .clock = &pioA_clk,
301 }, {
302 .id = AT91SAM9G45_ID_PIOB,
80e91cb8 303 .regbase = AT91SAM9G45_BASE_PIOB,
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304 .clock = &pioB_clk,
305 }, {
306 .id = AT91SAM9G45_ID_PIOC,
80e91cb8 307 .regbase = AT91SAM9G45_BASE_PIOC,
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308 .clock = &pioC_clk,
309 }, {
310 .id = AT91SAM9G45_ID_PIODE,
80e91cb8 311 .regbase = AT91SAM9G45_BASE_PIOD,
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312 .clock = &pioDE_clk,
313 }, {
314 .id = AT91SAM9G45_ID_PIODE,
80e91cb8 315 .regbase = AT91SAM9G45_BASE_PIOE,
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316 .clock = &pioDE_clk,
317 }
318};
319
320static void at91sam9g45_reset(void)
321{
322 at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
323}
324
325static void at91sam9g45_poweroff(void)
326{
327 at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
328}
329
330
331/* --------------------------------------------------------------------
332 * AT91SAM9G45 processor initialization
333 * -------------------------------------------------------------------- */
334
21d08b9d 335static void __init at91sam9g45_map_io(void)
789b23bc 336{
f0051d82 337 at91_init_sram(0, AT91SAM9G45_SRAM_BASE, AT91SAM9G45_SRAM_SIZE);
f407c2e3 338 init_consistent_dma_size(SZ_4M);
1b021a3b 339}
789b23bc 340
46539374 341static void __init at91sam9g45_initialize(void)
1b021a3b 342{
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343 at91_arch_reset = at91sam9g45_reset;
344 pm_power_off = at91sam9g45_poweroff;
345 at91_extern_irq = (1 << AT91SAM9G45_ID_IRQ0);
346
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347 /* Register GPIO subsystem */
348 at91_gpio_init(at91sam9g45_gpio, 5);
349}
350
351/* --------------------------------------------------------------------
352 * Interrupt initialization
353 * -------------------------------------------------------------------- */
354
355/*
356 * The default interrupt priority levels (0 = lowest, 7 = highest).
357 */
358static unsigned int at91sam9g45_default_irq_priority[NR_AIC_IRQS] __initdata = {
359 7, /* Advanced Interrupt Controller (FIQ) */
360 7, /* System Peripherals */
361 1, /* Parallel IO Controller A */
362 1, /* Parallel IO Controller B */
363 1, /* Parallel IO Controller C */
364 1, /* Parallel IO Controller D and E */
365 0,
366 5, /* USART 0 */
367 5, /* USART 1 */
368 5, /* USART 2 */
369 5, /* USART 3 */
370 0, /* Multimedia Card Interface 0 */
371 6, /* Two-Wire Interface 0 */
372 6, /* Two-Wire Interface 1 */
373 5, /* Serial Peripheral Interface 0 */
374 5, /* Serial Peripheral Interface 1 */
375 4, /* Serial Synchronous Controller 0 */
376 4, /* Serial Synchronous Controller 1 */
377 0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */
378 0, /* Pulse Width Modulation Controller */
379 0, /* Touch Screen Controller */
380 0, /* DMA Controller */
381 2, /* USB Host High Speed port */
382 3, /* LDC Controller */
383 5, /* AC97 Controller */
384 3, /* Ethernet */
385 0, /* Image Sensor Interface */
386 2, /* USB Device High speed port */
387 0,
388 0, /* Multimedia Card Interface 1 */
389 0,
390 0, /* Advanced Interrupt Controller (IRQ0) */
391};
392
8c3583b6 393struct at91_init_soc __initdata at91sam9g45_soc = {
21d08b9d 394 .map_io = at91sam9g45_map_io,
92100c12 395 .default_irq_priority = at91sam9g45_default_irq_priority,
51ddec76 396 .register_clocks = at91sam9g45_register_clocks,
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397 .init = at91sam9g45_initialize,
398};
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