2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2005 Olivier Houchard. All rights reserved.
5 * Copyright (c) 2010 Greg Ansley. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
39 #define _ARM32_BUS_DMA_PRIVATE
40 #include <machine/bus.h>
42 #include <arm/at91/at91var.h>
43 #include <arm/at91/at91reg.h>
44 #include <arm/at91/at91soc.h>
45 #include <arm/at91/at91_aicreg.h>
46 #include <arm/at91/at91sam9260reg.h>
47 #include <arm/at91/at91_pitreg.h>
48 #include <arm/at91/at91_pmcreg.h>
49 #include <arm/at91/at91_pmcvar.h>
50 #include <arm/at91/at91_rstreg.h>
53 * Standard priority levels for the system. 0 is lowest and 7 is highest.
54 * These values are the ones Atmel uses for its Linux port
56 static const int at91_irq_prio[32] =
58 7, /* Advanced Interrupt Controller */
59 7, /* System Peripherals */
60 1, /* Parallel IO Controller A */
61 1, /* Parallel IO Controller B */
62 1, /* Parallel IO Controller C */
63 0, /* Analog-to-Digital Converter */
67 0, /* Multimedia Card Interface */
68 2, /* USB Device Port */
69 6, /* Two-Wire Interface */
70 5, /* Serial Peripheral Interface 0 */
71 5, /* Serial Peripheral Interface 1 */
72 5, /* Serial Synchronous Controller */
75 0, /* Timer Counter 0 */
76 0, /* Timer Counter 1 */
77 0, /* Timer Counter 2 */
78 2, /* USB Host port */
80 0, /* Image Sensor Interface */
84 0, /* Timer Counter 3 */
85 0, /* Timer Counter 4 */
86 0, /* Timer Counter 5 */
87 0, /* Advanced Interrupt Controller IRQ0 */
88 0, /* Advanced Interrupt Controller IRQ1 */
89 0, /* Advanced Interrupt Controller IRQ2 */
92 static const uint32_t at91_pio_base[] = {
93 AT91SAM9260_PIOA_BASE,
94 AT91SAM9260_PIOB_BASE,
95 AT91SAM9260_PIOC_BASE,
98 #define DEVICE(_name, _id, _unit) \
101 AT91SAM9260_ ## _id ##_BASE, \
102 AT91SAM9260_ ## _id ## _SIZE, \
103 AT91SAM9260_IRQ_ ## _id \
106 static const struct cpu_devs at91_devs[] =
108 DEVICE("at91_aic", AIC, 0),
109 DEVICE("at91_pmc", PMC, 0),
110 DEVICE("at91_wdt", WDT, 0),
111 DEVICE("at91_rst", RSTC, 0),
112 DEVICE("at91_pit", PIT, 0),
113 DEVICE("at91_pio", PIOA, 0),
114 DEVICE("at91_pio", PIOB, 1),
115 DEVICE("at91_pio", PIOC, 2),
116 DEVICE("at91_twi", TWI, 0),
117 DEVICE("at91_mci", MCI, 0),
118 DEVICE("uart", DBGU, 0),
119 DEVICE("uart", USART0, 1),
120 DEVICE("uart", USART1, 2),
121 DEVICE("uart", USART2, 3),
122 DEVICE("uart", USART3, 4),
123 DEVICE("uart", USART4, 5),
124 DEVICE("uart", USART5, 6),
125 DEVICE("spi", SPI0, 0),
126 DEVICE("spi", SPI1, 1),
127 DEVICE("ate", EMAC, 0),
128 DEVICE("macb", EMAC, 0),
129 DEVICE("nand", NAND, 0),
130 DEVICE("ohci", OHCI, 0),
135 * The following is unused currently since we don't ever set the PLLA
136 * frequency of the device.
139 at91_pll_outa(int freq)
144 * Set OUTA, per the data sheet. See Table 40-15 titled
145 * PLLA Characteristics in the SAM9260 doc.
148 if (freq > 155000000)
150 return ((1 << 29) | outa);
154 at91_pll_outb(int freq)
161 at91_clock_init(void)
163 struct at91_pmc_clock *clk;
165 /* Update USB device port clock info */
166 clk = at91_pmc_clock_ref("udpck");
167 clk->pmc_mask = PMC_SCER_UDP_SAM9;
168 at91_pmc_clock_deref(clk);
170 /* Update USB host port clock info */
171 clk = at91_pmc_clock_ref("uhpck");
172 clk->pmc_mask = PMC_SCER_UHP_SAM9;
173 at91_pmc_clock_deref(clk);
175 /* Each SOC has different PLL contraints */
176 clk = at91_pmc_clock_ref("plla");
177 clk->pll_min_in = SAM9260_PLL_A_MIN_IN_FREQ; /* 1 MHz */
178 clk->pll_max_in = SAM9260_PLL_A_MAX_IN_FREQ; /* 32 MHz */
179 clk->pll_min_out = SAM9260_PLL_A_MIN_OUT_FREQ; /* 80 MHz */
180 clk->pll_max_out = SAM9260_PLL_A_MAX_OUT_FREQ; /* 240 MHz */
181 clk->pll_mul_shift = SAM9260_PLL_A_MUL_SHIFT;
182 clk->pll_mul_mask = SAM9260_PLL_A_MUL_MASK;
183 clk->pll_div_shift = SAM9260_PLL_A_DIV_SHIFT;
184 clk->pll_div_mask = SAM9260_PLL_A_DIV_MASK;
185 clk->set_outb = at91_pll_outa;
186 at91_pmc_clock_deref(clk);
189 * Fudge MAX pll in frequence down below 3.0 MHz to ensure
190 * PMC alogrithm choose the divisor that causes the input clock
191 * to be near the optimal 2 MHz per datasheet. We know
192 * we are going to be using this for the USB clock at 96 MHz.
193 * Causes no extra frequency deviation for all recommended crystal
194 * values. See Note 1, table 40-16 SAM9260 doc.
196 clk = at91_pmc_clock_ref("pllb");
197 clk->pll_min_in = SAM9260_PLL_B_MIN_IN_FREQ; /* 1 MHz */
198 clk->pll_max_in = 2999999; /* ~3 MHz */
199 clk->pll_min_out = SAM9260_PLL_B_MIN_OUT_FREQ; /* 70 MHz */
200 clk->pll_max_out = SAM9260_PLL_B_MAX_OUT_FREQ; /* 130 MHz */
201 clk->pll_mul_shift = SAM9260_PLL_B_MUL_SHIFT;
202 clk->pll_mul_mask = SAM9260_PLL_B_MUL_MASK;
203 clk->pll_div_shift = SAM9260_PLL_B_DIV_SHIFT;
204 clk->pll_div_mask = SAM9260_PLL_B_DIV_MASK;
205 clk->set_outb = at91_pll_outb;
206 at91_pmc_clock_deref(clk);
209 static struct at91_soc_data soc_data = {
210 .soc_delay = at91_pit_delay,
211 .soc_reset = at91_rst_cpu_reset,
212 .soc_clock_init = at91_clock_init,
213 .soc_irq_prio = at91_irq_prio,
214 .soc_children = at91_devs,
215 .soc_pio_base = at91_pio_base,
216 .soc_pio_count = nitems(at91_pio_base),
219 AT91_SOC(AT91_T_SAM9260, &soc_data);