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1/*
2 * Chip-specific setup code for the AT91SAM9x5 family
3 *
4 * Copyright (C) 2010-2012 Atmel Corporation.
5 *
6 * Licensed under GPLv2 or later.
7 */
8
9#include <linux/module.h>
10#include <linux/dma-mapping.h>
11
12#include <asm/irq.h>
13#include <asm/mach/arch.h>
14#include <asm/mach/map.h>
15#include <mach/at91sam9x5.h>
16#include <mach/at91_pmc.h>
17#include <mach/cpu.h>
18#include <mach/board.h>
19
20#include "soc.h"
21#include "generic.h"
22#include "clock.h"
23#include "sam9_smc.h"
24
25/* --------------------------------------------------------------------
26 * Clocks
27 * -------------------------------------------------------------------- */
28
29/*
30 * The peripheral clocks.
31 */
32static struct clk pioAB_clk = {
33 .name = "pioAB_clk",
34 .pmc_mask = 1 << AT91SAM9X5_ID_PIOAB,
35 .type = CLK_TYPE_PERIPHERAL,
36};
37static struct clk pioCD_clk = {
38 .name = "pioCD_clk",
39 .pmc_mask = 1 << AT91SAM9X5_ID_PIOCD,
40 .type = CLK_TYPE_PERIPHERAL,
41};
42static struct clk smd_clk = {
43 .name = "smd_clk",
44 .pmc_mask = 1 << AT91SAM9X5_ID_SMD,
45 .type = CLK_TYPE_PERIPHERAL,
46};
47static struct clk usart0_clk = {
48 .name = "usart0_clk",
49 .pmc_mask = 1 << AT91SAM9X5_ID_USART0,
50 .type = CLK_TYPE_PERIPHERAL,
51};
52static struct clk usart1_clk = {
53 .name = "usart1_clk",
54 .pmc_mask = 1 << AT91SAM9X5_ID_USART1,
55 .type = CLK_TYPE_PERIPHERAL,
56};
57static struct clk usart2_clk = {
58 .name = "usart2_clk",
59 .pmc_mask = 1 << AT91SAM9X5_ID_USART2,
60 .type = CLK_TYPE_PERIPHERAL,
61};
62/* USART3 clock - Only for sam9g25/sam9x25 */
63static struct clk usart3_clk = {
64 .name = "usart3_clk",
65 .pmc_mask = 1 << AT91SAM9X5_ID_USART3,
66 .type = CLK_TYPE_PERIPHERAL,
67};
68static struct clk twi0_clk = {
69 .name = "twi0_clk",
70 .pmc_mask = 1 << AT91SAM9X5_ID_TWI0,
71 .type = CLK_TYPE_PERIPHERAL,
72};
73static struct clk twi1_clk = {
74 .name = "twi1_clk",
75 .pmc_mask = 1 << AT91SAM9X5_ID_TWI1,
76 .type = CLK_TYPE_PERIPHERAL,
77};
78static struct clk twi2_clk = {
79 .name = "twi2_clk",
80 .pmc_mask = 1 << AT91SAM9X5_ID_TWI2,
81 .type = CLK_TYPE_PERIPHERAL,
82};
83static struct clk mmc0_clk = {
84 .name = "mci0_clk",
85 .pmc_mask = 1 << AT91SAM9X5_ID_MCI0,
86 .type = CLK_TYPE_PERIPHERAL,
87};
88static struct clk spi0_clk = {
89 .name = "spi0_clk",
90 .pmc_mask = 1 << AT91SAM9X5_ID_SPI0,
91 .type = CLK_TYPE_PERIPHERAL,
92};
93static struct clk spi1_clk = {
94 .name = "spi1_clk",
95 .pmc_mask = 1 << AT91SAM9X5_ID_SPI1,
96 .type = CLK_TYPE_PERIPHERAL,
97};
98static struct clk uart0_clk = {
99 .name = "uart0_clk",
100 .pmc_mask = 1 << AT91SAM9X5_ID_UART0,
101 .type = CLK_TYPE_PERIPHERAL,
102};
103static struct clk uart1_clk = {
104 .name = "uart1_clk",
105 .pmc_mask = 1 << AT91SAM9X5_ID_UART1,
106 .type = CLK_TYPE_PERIPHERAL,
107};
108static struct clk tcb0_clk = {
109 .name = "tcb0_clk",
110 .pmc_mask = 1 << AT91SAM9X5_ID_TCB,
111 .type = CLK_TYPE_PERIPHERAL,
112};
113static struct clk pwm_clk = {
114 .name = "pwm_clk",
115 .pmc_mask = 1 << AT91SAM9X5_ID_PWM,
116 .type = CLK_TYPE_PERIPHERAL,
117};
118static struct clk adc_clk = {
119 .name = "adc_clk",
120 .pmc_mask = 1 << AT91SAM9X5_ID_ADC,
121 .type = CLK_TYPE_PERIPHERAL,
122};
123static struct clk adc_op_clk = {
124 .name = "adc_op_clk",
125 .type = CLK_TYPE_PERIPHERAL,
126 .rate_hz = 5000000,
127};
128static struct clk dma0_clk = {
129 .name = "dma0_clk",
130 .pmc_mask = 1 << AT91SAM9X5_ID_DMA0,
131 .type = CLK_TYPE_PERIPHERAL,
132};
133static struct clk dma1_clk = {
134 .name = "dma1_clk",
135 .pmc_mask = 1 << AT91SAM9X5_ID_DMA1,
136 .type = CLK_TYPE_PERIPHERAL,
137};
138static struct clk uhphs_clk = {
139 .name = "uhphs",
140 .pmc_mask = 1 << AT91SAM9X5_ID_UHPHS,
141 .type = CLK_TYPE_PERIPHERAL,
142};
143static struct clk udphs_clk = {
144 .name = "udphs_clk",
145 .pmc_mask = 1 << AT91SAM9X5_ID_UDPHS,
146 .type = CLK_TYPE_PERIPHERAL,
147};
148/* emac0 clock - Only for sam9g25/sam9x25/sam9g35/sam9x35 */
149static struct clk macb0_clk = {
150 .name = "pclk",
151 .pmc_mask = 1 << AT91SAM9X5_ID_EMAC0,
152 .type = CLK_TYPE_PERIPHERAL,
153};
154/* lcd clock - Only for sam9g15/sam9g35/sam9x35 */
155static struct clk lcdc_clk = {
156 .name = "lcdc_clk",
157 .pmc_mask = 1 << AT91SAM9X5_ID_LCDC,
158 .type = CLK_TYPE_PERIPHERAL,
159};
160/* isi clock - Only for sam9g25 */
161static struct clk isi_clk = {
162 .name = "isi_clk",
163 .pmc_mask = 1 << AT91SAM9X5_ID_ISI,
164 .type = CLK_TYPE_PERIPHERAL,
165};
166static struct clk mmc1_clk = {
167 .name = "mci1_clk",
168 .pmc_mask = 1 << AT91SAM9X5_ID_MCI1,
169 .type = CLK_TYPE_PERIPHERAL,
170};
171/* emac1 clock - Only for sam9x25 */
172static struct clk macb1_clk = {
173 .name = "pclk",
174 .pmc_mask = 1 << AT91SAM9X5_ID_EMAC1,
175 .type = CLK_TYPE_PERIPHERAL,
176};
177static struct clk ssc_clk = {
178 .name = "ssc_clk",
179 .pmc_mask = 1 << AT91SAM9X5_ID_SSC,
180 .type = CLK_TYPE_PERIPHERAL,
181};
182/* can0 clock - Only for sam9x35 */
183static struct clk can0_clk = {
184 .name = "can0_clk",
185 .pmc_mask = 1 << AT91SAM9X5_ID_CAN0,
186 .type = CLK_TYPE_PERIPHERAL,
187};
188/* can1 clock - Only for sam9x35 */
189static struct clk can1_clk = {
190 .name = "can1_clk",
191 .pmc_mask = 1 << AT91SAM9X5_ID_CAN1,
192 .type = CLK_TYPE_PERIPHERAL,
193};
194
195static struct clk *periph_clocks[] __initdata = {
196 &pioAB_clk,
197 &pioCD_clk,
198 &smd_clk,
199 &usart0_clk,
200 &usart1_clk,
201 &usart2_clk,
202 &twi0_clk,
203 &twi1_clk,
204 &twi2_clk,
205 &mmc0_clk,
206 &spi0_clk,
207 &spi1_clk,
208 &uart0_clk,
209 &uart1_clk,
210 &tcb0_clk,
211 &pwm_clk,
212 &adc_clk,
213 &adc_op_clk,
214 &dma0_clk,
215 &dma1_clk,
216 &uhphs_clk,
217 &udphs_clk,
218 &mmc1_clk,
219 &ssc_clk,
220 // irq0
221};
222
223static struct clk_lookup periph_clocks_lookups[] = {
224 /* lookup table for DT entries */
225 CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck),
226 CLKDEV_CON_DEV_ID("usart", "f801c000.serial", &usart0_clk),
227 CLKDEV_CON_DEV_ID("usart", "f8020000.serial", &usart1_clk),
228 CLKDEV_CON_DEV_ID("usart", "f8024000.serial", &usart2_clk),
229 CLKDEV_CON_DEV_ID("usart", "f8028000.serial", &usart3_clk),
230 CLKDEV_CON_DEV_ID("t0_clk", "f8008000.timer", &tcb0_clk),
231 CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb0_clk),
232 CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma0_clk),
233 CLKDEV_CON_DEV_ID("dma_clk", "ffffee00.dma-controller", &dma1_clk),
234 CLKDEV_CON_ID("pioA", &pioAB_clk),
235 CLKDEV_CON_ID("pioB", &pioAB_clk),
236 CLKDEV_CON_ID("pioC", &pioCD_clk),
237 CLKDEV_CON_ID("pioD", &pioCD_clk),
238 /* additional fake clock for macb_hclk */
239 CLKDEV_CON_DEV_ID("hclk", "f802c000.ethernet", &macb0_clk),
240 CLKDEV_CON_DEV_ID("hclk", "f8030000.ethernet", &macb1_clk),
241 CLKDEV_CON_DEV_ID("hclk", "600000.ohci", &uhphs_clk),
242 CLKDEV_CON_DEV_ID("ohci_clk", "600000.ohci", &uhphs_clk),
243 CLKDEV_CON_DEV_ID("ehci_clk", "700000.ehci", &uhphs_clk),
244};
245
246/*
247 * The two programmable clocks.
248 * You must configure pin multiplexing to bring these signals out.
249 */
250static struct clk pck0 = {
251 .name = "pck0",
252 .pmc_mask = AT91_PMC_PCK0,
253 .type = CLK_TYPE_PROGRAMMABLE,
254 .id = 0,
255};
256static struct clk pck1 = {
257 .name = "pck1",
258 .pmc_mask = AT91_PMC_PCK1,
259 .type = CLK_TYPE_PROGRAMMABLE,
260 .id = 1,
261};
262
263static void __init at91sam9x5_register_clocks(void)
264{
265 int i;
266
267 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
268 clk_register(periph_clocks[i]);
269
270 clkdev_add_table(periph_clocks_lookups,
271 ARRAY_SIZE(periph_clocks_lookups));
272
273 if (cpu_is_at91sam9g25()
274 || cpu_is_at91sam9x25())
275 clk_register(&usart3_clk);
276
277 if (cpu_is_at91sam9g25()
278 || cpu_is_at91sam9x25()
279 || cpu_is_at91sam9g35()
280 || cpu_is_at91sam9x35())
281 clk_register(&macb0_clk);
282
283 if (cpu_is_at91sam9g15()
284 || cpu_is_at91sam9g35()
285 || cpu_is_at91sam9x35())
286 clk_register(&lcdc_clk);
287
288 if (cpu_is_at91sam9g25())
289 clk_register(&isi_clk);
290
291 if (cpu_is_at91sam9x25())
292 clk_register(&macb1_clk);
293
294 if (cpu_is_at91sam9x25()
295 || cpu_is_at91sam9x35()) {
296 clk_register(&can0_clk);
297 clk_register(&can1_clk);
298 }
299
300 clk_register(&pck0);
301 clk_register(&pck1);
302}
303
304/* --------------------------------------------------------------------
305 * AT91SAM9x5 processor initialization
306 * -------------------------------------------------------------------- */
307
308static void __init at91sam9x5_map_io(void)
309{
310 at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
311}
312
313void __init at91sam9x5_initialize(void)
314{
315 at91_extern_irq = (1 << AT91SAM9X5_ID_IRQ0);
316
317 /* Register GPIO subsystem (using DT) */
318 at91_gpio_init(NULL, 0);
319}
320
321/* --------------------------------------------------------------------
322 * Interrupt initialization
323 * -------------------------------------------------------------------- */
324/*
325 * The default interrupt priority levels (0 = lowest, 7 = highest).
326 */
327static unsigned int at91sam9x5_default_irq_priority[NR_AIC_IRQS] __initdata = {
328 7, /* Advanced Interrupt Controller (FIQ) */
329 7, /* System Peripherals */
330 1, /* Parallel IO Controller A and B */
331 1, /* Parallel IO Controller C and D */
332 4, /* Soft Modem */
333 5, /* USART 0 */
334 5, /* USART 1 */
335 5, /* USART 2 */
336 5, /* USART 3 */
337 6, /* Two-Wire Interface 0 */
338 6, /* Two-Wire Interface 1 */
339 6, /* Two-Wire Interface 2 */
340 0, /* Multimedia Card Interface 0 */
341 5, /* Serial Peripheral Interface 0 */
342 5, /* Serial Peripheral Interface 1 */
343 5, /* UART 0 */
344 5, /* UART 1 */
345 0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */
346 0, /* Pulse Width Modulation Controller */
347 0, /* ADC Controller */
348 0, /* DMA Controller 0 */
349 0, /* DMA Controller 1 */
350 2, /* USB Host High Speed port */
351 2, /* USB Device High speed port */
352 3, /* Ethernet MAC 0 */
353 3, /* LDC Controller or Image Sensor Interface */
354 0, /* Multimedia Card Interface 1 */
355 3, /* Ethernet MAC 1 */
356 4, /* Synchronous Serial Interface */
357 4, /* CAN Controller 0 */
358 4, /* CAN Controller 1 */
359 0, /* Advanced Interrupt Controller (IRQ0) */
360};
361
362struct at91_init_soc __initdata at91sam9x5_soc = {
363 .map_io = at91sam9x5_map_io,
364 .default_irq_priority = at91sam9x5_default_irq_priority,
365 .register_clocks = at91sam9x5_register_clocks,
366 .init = at91sam9x5_initialize,
367};