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>
29 /* --------------------------------------------------------------------
31 * -------------------------------------------------------------------- */
34 * The peripheral clocks.
36 static struct clk pioA_clk
= {
38 .pmc_mask
= 1 << AT91SAM9G45_ID_PIOA
,
39 .type
= CLK_TYPE_PERIPHERAL
,
41 static struct clk pioB_clk
= {
43 .pmc_mask
= 1 << AT91SAM9G45_ID_PIOB
,
44 .type
= CLK_TYPE_PERIPHERAL
,
46 static struct clk pioC_clk
= {
48 .pmc_mask
= 1 << AT91SAM9G45_ID_PIOC
,
49 .type
= CLK_TYPE_PERIPHERAL
,
51 static struct clk pioDE_clk
= {
53 .pmc_mask
= 1 << AT91SAM9G45_ID_PIODE
,
54 .type
= CLK_TYPE_PERIPHERAL
,
56 static struct clk usart0_clk
= {
58 .pmc_mask
= 1 << AT91SAM9G45_ID_US0
,
59 .type
= CLK_TYPE_PERIPHERAL
,
61 static struct clk usart1_clk
= {
63 .pmc_mask
= 1 << AT91SAM9G45_ID_US1
,
64 .type
= CLK_TYPE_PERIPHERAL
,
66 static struct clk usart2_clk
= {
68 .pmc_mask
= 1 << AT91SAM9G45_ID_US2
,
69 .type
= CLK_TYPE_PERIPHERAL
,
71 static struct clk usart3_clk
= {
73 .pmc_mask
= 1 << AT91SAM9G45_ID_US3
,
74 .type
= CLK_TYPE_PERIPHERAL
,
76 static struct clk mmc0_clk
= {
78 .pmc_mask
= 1 << AT91SAM9G45_ID_MCI0
,
79 .type
= CLK_TYPE_PERIPHERAL
,
81 static struct clk twi0_clk
= {
83 .pmc_mask
= 1 << AT91SAM9G45_ID_TWI0
,
84 .type
= CLK_TYPE_PERIPHERAL
,
86 static struct clk twi1_clk
= {
88 .pmc_mask
= 1 << AT91SAM9G45_ID_TWI1
,
89 .type
= CLK_TYPE_PERIPHERAL
,
91 static struct clk spi0_clk
= {
93 .pmc_mask
= 1 << AT91SAM9G45_ID_SPI0
,
94 .type
= CLK_TYPE_PERIPHERAL
,
96 static struct clk spi1_clk
= {
98 .pmc_mask
= 1 << AT91SAM9G45_ID_SPI1
,
99 .type
= CLK_TYPE_PERIPHERAL
,
101 static struct clk ssc0_clk
= {
103 .pmc_mask
= 1 << AT91SAM9G45_ID_SSC0
,
104 .type
= CLK_TYPE_PERIPHERAL
,
106 static struct clk ssc1_clk
= {
108 .pmc_mask
= 1 << AT91SAM9G45_ID_SSC1
,
109 .type
= CLK_TYPE_PERIPHERAL
,
111 static struct clk tcb0_clk
= {
113 .pmc_mask
= 1 << AT91SAM9G45_ID_TCB
,
114 .type
= CLK_TYPE_PERIPHERAL
,
116 static struct clk pwm_clk
= {
118 .pmc_mask
= 1 << AT91SAM9G45_ID_PWMC
,
119 .type
= CLK_TYPE_PERIPHERAL
,
121 static struct clk tsc_clk
= {
123 .pmc_mask
= 1 << AT91SAM9G45_ID_TSC
,
124 .type
= CLK_TYPE_PERIPHERAL
,
126 static struct clk dma_clk
= {
128 .pmc_mask
= 1 << AT91SAM9G45_ID_DMA
,
129 .type
= CLK_TYPE_PERIPHERAL
,
131 static struct clk uhphs_clk
= {
133 .pmc_mask
= 1 << AT91SAM9G45_ID_UHPHS
,
134 .type
= CLK_TYPE_PERIPHERAL
,
136 static struct clk lcdc_clk
= {
138 .pmc_mask
= 1 << AT91SAM9G45_ID_LCDC
,
139 .type
= CLK_TYPE_PERIPHERAL
,
141 static struct clk ac97_clk
= {
143 .pmc_mask
= 1 << AT91SAM9G45_ID_AC97C
,
144 .type
= CLK_TYPE_PERIPHERAL
,
146 static struct clk macb_clk
= {
148 .pmc_mask
= 1 << AT91SAM9G45_ID_EMAC
,
149 .type
= CLK_TYPE_PERIPHERAL
,
151 static struct clk isi_clk
= {
153 .pmc_mask
= 1 << AT91SAM9G45_ID_ISI
,
154 .type
= CLK_TYPE_PERIPHERAL
,
156 static struct clk udphs_clk
= {
158 .pmc_mask
= 1 << AT91SAM9G45_ID_UDPHS
,
159 .type
= CLK_TYPE_PERIPHERAL
,
161 static struct clk mmc1_clk
= {
163 .pmc_mask
= 1 << AT91SAM9G45_ID_MCI1
,
164 .type
= CLK_TYPE_PERIPHERAL
,
167 /* Video decoder clock - Only for sam9m10/sam9m11 */
168 static struct clk vdec_clk
= {
170 .pmc_mask
= 1 << AT91SAM9G45_ID_VDEC
,
171 .type
= CLK_TYPE_PERIPHERAL
,
174 static struct clk
*periph_clocks
[] __initdata
= {
204 static struct clk_lookup periph_clocks_lookups
[] = {
205 /* One additional fake clock for ohci */
206 CLKDEV_CON_ID("ohci_clk", &uhphs_clk
),
207 CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk
),
208 CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk
),
209 CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk
),
210 CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk
),
211 CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk
),
212 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk
),
213 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk
),
214 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk
),
215 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk
),
216 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk
),
217 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk
),
220 static struct clk_lookup usart_clocks_lookups
[] = {
221 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck
),
222 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk
),
223 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk
),
224 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk
),
225 CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk
),
229 * The two programmable clocks.
230 * You must configure pin multiplexing to bring these signals out.
232 static struct clk pck0
= {
234 .pmc_mask
= AT91_PMC_PCK0
,
235 .type
= CLK_TYPE_PROGRAMMABLE
,
238 static struct clk pck1
= {
240 .pmc_mask
= AT91_PMC_PCK1
,
241 .type
= CLK_TYPE_PROGRAMMABLE
,
245 static void __init
at91sam9g45_register_clocks(void)
249 for (i
= 0; i
< ARRAY_SIZE(periph_clocks
); i
++)
250 clk_register(periph_clocks
[i
]);
252 clkdev_add_table(periph_clocks_lookups
,
253 ARRAY_SIZE(periph_clocks_lookups
));
254 clkdev_add_table(usart_clocks_lookups
,
255 ARRAY_SIZE(usart_clocks_lookups
));
257 if (cpu_is_at91sam9m10() || cpu_is_at91sam9m11())
258 clk_register(&vdec_clk
);
264 static struct clk_lookup console_clock_lookup
;
266 void __init
at91sam9g45_set_console_clock(int id
)
268 if (id
>= ARRAY_SIZE(usart_clocks_lookups
))
271 console_clock_lookup
.con_id
= "usart";
272 console_clock_lookup
.clk
= usart_clocks_lookups
[id
].clk
;
273 clkdev_add(&console_clock_lookup
);
276 /* --------------------------------------------------------------------
278 * -------------------------------------------------------------------- */
280 static struct at91_gpio_bank at91sam9g45_gpio
[] = {
282 .id
= AT91SAM9G45_ID_PIOA
,
286 .id
= AT91SAM9G45_ID_PIOB
,
290 .id
= AT91SAM9G45_ID_PIOC
,
294 .id
= AT91SAM9G45_ID_PIODE
,
298 .id
= AT91SAM9G45_ID_PIODE
,
304 static void at91sam9g45_reset(void)
306 at91_sys_write(AT91_RSTC_CR
, AT91_RSTC_KEY
| AT91_RSTC_PROCRST
| AT91_RSTC_PERRST
);
309 static void at91sam9g45_poweroff(void)
311 at91_sys_write(AT91_SHDW_CR
, AT91_SHDW_KEY
| AT91_SHDW_SHDW
);
315 /* --------------------------------------------------------------------
316 * AT91SAM9G45 processor initialization
317 * -------------------------------------------------------------------- */
319 static void __init
at91sam9g45_map_io(void)
321 at91_init_sram(0, AT91SAM9G45_SRAM_BASE
, AT91SAM9G45_SRAM_SIZE
);
324 static void __init
at91sam9g45_initialize(void)
326 at91_arch_reset
= at91sam9g45_reset
;
327 pm_power_off
= at91sam9g45_poweroff
;
328 at91_extern_irq
= (1 << AT91SAM9G45_ID_IRQ0
);
330 /* Register GPIO subsystem */
331 at91_gpio_init(at91sam9g45_gpio
, 5);
334 /* --------------------------------------------------------------------
335 * Interrupt initialization
336 * -------------------------------------------------------------------- */
339 * The default interrupt priority levels (0 = lowest, 7 = highest).
341 static unsigned int at91sam9g45_default_irq_priority
[NR_AIC_IRQS
] __initdata
= {
342 7, /* Advanced Interrupt Controller (FIQ) */
343 7, /* System Peripherals */
344 1, /* Parallel IO Controller A */
345 1, /* Parallel IO Controller B */
346 1, /* Parallel IO Controller C */
347 1, /* Parallel IO Controller D and E */
353 0, /* Multimedia Card Interface 0 */
354 6, /* Two-Wire Interface 0 */
355 6, /* Two-Wire Interface 1 */
356 5, /* Serial Peripheral Interface 0 */
357 5, /* Serial Peripheral Interface 1 */
358 4, /* Serial Synchronous Controller 0 */
359 4, /* Serial Synchronous Controller 1 */
360 0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */
361 0, /* Pulse Width Modulation Controller */
362 0, /* Touch Screen Controller */
363 0, /* DMA Controller */
364 2, /* USB Host High Speed port */
365 3, /* LDC Controller */
366 5, /* AC97 Controller */
368 0, /* Image Sensor Interface */
369 2, /* USB Device High speed port */
371 0, /* Multimedia Card Interface 1 */
373 0, /* Advanced Interrupt Controller (IRQ0) */
376 struct at91_init_soc __initdata at91sam9g45_soc
= {
377 .map_io
= at91sam9g45_map_io
,
378 .default_irq_priority
= at91sam9g45_default_irq_priority
,
379 .register_clocks
= at91sam9g45_register_clocks
,
380 .init
= at91sam9g45_initialize
,