2 * Copyright (c) 2005 Olivier Houchard. All rights reserved.
3 * Copyright (c) 2010 Greg Ansley. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/malloc.h>
35 #include <sys/module.h>
37 #define _ARM32_BUS_DMA_PRIVATE
38 #include <machine/bus.h>
40 #include <arm/at91/at91var.h>
41 #include <arm/at91/at91reg.h>
42 #include <arm/at91/at91soc.h>
43 #include <arm/at91/at91_aicreg.h>
44 #include <arm/at91/at91sam9260reg.h>
45 #include <arm/at91/at91_pitreg.h>
46 #include <arm/at91/at91_pmcreg.h>
47 #include <arm/at91/at91_pmcvar.h>
48 #include <arm/at91/at91_rstreg.h>
51 * Standard priority levels for the system. 0 is lowest and 7 is highest.
52 * These values are the ones Atmel uses for its Linux port
54 static const int at91_irq_prio[32] =
56 7, /* Advanced Interrupt Controller */
57 7, /* System Peripherals */
58 1, /* Parallel IO Controller A */
59 1, /* Parallel IO Controller B */
60 1, /* Parallel IO Controller C */
61 0, /* Analog-to-Digital Converter */
65 0, /* Multimedia Card Interface */
66 2, /* USB Device Port */
67 6, /* Two-Wire Interface */
68 5, /* Serial Peripheral Interface 0 */
69 5, /* Serial Peripheral Interface 1 */
70 5, /* Serial Synchronous Controller */
73 0, /* Timer Counter 0 */
74 0, /* Timer Counter 1 */
75 0, /* Timer Counter 2 */
76 2, /* USB Host port */
78 0, /* Image Sensor Interface */
82 0, /* Timer Counter 3 */
83 0, /* Timer Counter 4 */
84 0, /* Timer Counter 5 */
85 0, /* Advanced Interrupt Controller IRQ0 */
86 0, /* Advanced Interrupt Controller IRQ1 */
87 0, /* Advanced Interrupt Controller IRQ2 */
90 #define DEVICE(_name, _id, _unit) \
93 AT91SAM9260_ ## _id ##_BASE, \
94 AT91SAM9260_ ## _id ## _SIZE, \
95 AT91SAM9260_IRQ_ ## _id \
98 static const struct cpu_devs at91_devs[] =
100 DEVICE("at91_pmc", PMC, 0),
101 DEVICE("at91_wdt", WDT, 0),
102 DEVICE("at91_rst", RSTC, 0),
103 DEVICE("at91_pit", PIT, 0),
104 DEVICE("at91_pio", PIOA, 0),
105 DEVICE("at91_pio", PIOB, 1),
106 DEVICE("at91_pio", PIOC, 2),
107 DEVICE("at91_twi", TWI, 0),
108 DEVICE("at91_mci", MCI, 0),
109 DEVICE("uart", DBGU, 0),
110 DEVICE("uart", USART0, 1),
111 DEVICE("uart", USART1, 2),
112 DEVICE("uart", USART2, 3),
113 DEVICE("uart", USART3, 4),
114 DEVICE("uart", USART4, 5),
115 DEVICE("uart", USART5, 6),
116 DEVICE("spi", SPI0, 0),
117 DEVICE("spi", SPI1, 1),
118 DEVICE("ate", EMAC, 0),
119 DEVICE("macb", EMAC, 0),
120 DEVICE("nand", NAND, 0),
121 DEVICE("ohci", OHCI, 0),
126 * The following is unused currently since we don't ever set the PLLA
127 * frequency of the device.
130 at91_pll_outa(int freq)
135 * Set OUTA, per the data sheet. See Table 40-15 titled
136 * PLLA Characteristics in the SAM9260 doc.
139 if (freq > 155000000)
141 return ((1 << 29) | outa);
145 at91_pll_outb(int freq)
152 at91_clock_init(void)
154 struct at91_pmc_clock *clk;
156 /* Update USB device port clock info */
157 clk = at91_pmc_clock_ref("udpck");
158 clk->pmc_mask = PMC_SCER_UDP_SAM9;
159 at91_pmc_clock_deref(clk);
161 /* Update USB host port clock info */
162 clk = at91_pmc_clock_ref("uhpck");
163 clk->pmc_mask = PMC_SCER_UHP_SAM9;
164 at91_pmc_clock_deref(clk);
166 /* Each SOC has different PLL contraints */
167 clk = at91_pmc_clock_ref("plla");
168 clk->pll_min_in = SAM9260_PLL_A_MIN_IN_FREQ; /* 1 MHz */
169 clk->pll_max_in = SAM9260_PLL_A_MAX_IN_FREQ; /* 32 MHz */
170 clk->pll_min_out = SAM9260_PLL_A_MIN_OUT_FREQ; /* 80 MHz */
171 clk->pll_max_out = SAM9260_PLL_A_MAX_OUT_FREQ; /* 240 MHz */
172 clk->pll_mul_shift = SAM9260_PLL_A_MUL_SHIFT;
173 clk->pll_mul_mask = SAM9260_PLL_A_MUL_MASK;
174 clk->pll_div_shift = SAM9260_PLL_A_DIV_SHIFT;
175 clk->pll_div_mask = SAM9260_PLL_A_DIV_MASK;
176 clk->set_outb = at91_pll_outa;
177 at91_pmc_clock_deref(clk);
180 * Fudge MAX pll in frequence down below 3.0 MHz to ensure
181 * PMC alogrithm choose the divisor that causes the input clock
182 * to be near the optimal 2 MHz per datasheet. We know
183 * we are going to be using this for the USB clock at 96 MHz.
184 * Causes no extra frequency deviation for all recomended crystal
185 * values. See Note 1, table 40-16 SAM9260 doc.
187 clk = at91_pmc_clock_ref("pllb");
188 clk->pll_min_in = SAM9260_PLL_B_MIN_IN_FREQ; /* 1 MHz */
189 clk->pll_max_in = SAM9260_PLL_B_MAX_IN_FREQ; /* 5 MHz */
190 clk->pll_max_in = 2999999; /* ~3 MHz */
191 clk->pll_min_out = SAM9260_PLL_B_MIN_OUT_FREQ; /* 70 MHz */
192 clk->pll_max_out = SAM9260_PLL_B_MAX_OUT_FREQ; /* 130 MHz */
193 clk->pll_mul_shift = SAM9260_PLL_B_MUL_SHIFT;
194 clk->pll_mul_mask = SAM9260_PLL_B_MUL_MASK;
195 clk->pll_div_shift = SAM9260_PLL_B_DIV_SHIFT;
196 clk->pll_div_mask = SAM9260_PLL_B_DIV_MASK;
197 clk->set_outb = at91_pll_outb;
198 at91_pmc_clock_deref(clk);
201 static struct at91_soc_data soc_data = {
202 .soc_delay = at91_pit_delay,
203 .soc_reset = at91_rst_cpu_reset,
204 .soc_clock_init = at91_clock_init,
205 .soc_irq_prio = at91_irq_prio,
206 .soc_children = at91_devs,
209 AT91_SOC(AT91_T_SAM9260, &soc_data);