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/*-
* Copyright (c) 2005 Olivier Houchard. All rights reserved.
* Copyright (c) 2010 Greg Ansley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#define _ARM32_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <arm/at91/at91var.h>
#include <arm/at91/at91reg.h>
#include <arm/at91/at91soc.h>
#include <arm/at91/at91_aicreg.h>
#include <arm/at91/at91sam9260reg.h>
#include <arm/at91/at91_pitreg.h>
#include <arm/at91/at91_pmcreg.h>
#include <arm/at91/at91_pmcvar.h>
#include <arm/at91/at91_rstreg.h>
/*
* Standard priority levels for the system. 0 is lowest and 7 is highest.
* These values are the ones Atmel uses for its Linux port
*/
static const int at91_irq_prio[32] =
{
7, /* Advanced Interrupt Controller */
7, /* System Peripherals */
1, /* Parallel IO Controller A */
1, /* Parallel IO Controller B */
1, /* Parallel IO Controller C */
0, /* Analog-to-Digital Converter */
5, /* USART 0 */
5, /* USART 1 */
5, /* USART 2 */
0, /* Multimedia Card Interface */
2, /* USB Device Port */
6, /* Two-Wire Interface */
5, /* Serial Peripheral Interface 0 */
5, /* Serial Peripheral Interface 1 */
5, /* Serial Synchronous Controller */
0, /* (reserved) */
0, /* (reserved) */
0, /* Timer Counter 0 */
0, /* Timer Counter 1 */
0, /* Timer Counter 2 */
2, /* USB Host port */
3, /* Ethernet */
0, /* Image Sensor Interface */
5, /* USART 3 */
5, /* USART 4 */
5, /* USART 5 */
0, /* Timer Counter 3 */
0, /* Timer Counter 4 */
0, /* Timer Counter 5 */
0, /* Advanced Interrupt Controller IRQ0 */
0, /* Advanced Interrupt Controller IRQ1 */
0, /* Advanced Interrupt Controller IRQ2 */
};
#define DEVICE(_name, _id, _unit) \
{ \
_name, _unit, \
AT91SAM9260_ ## _id ##_BASE, \
AT91SAM9260_ ## _id ## _SIZE, \
AT91SAM9260_IRQ_ ## _id \
}
static const struct cpu_devs at91_devs[] =
{
DEVICE("at91_pmc", PMC, 0),
DEVICE("at91_wdt", WDT, 0),
DEVICE("at91_rst", RSTC, 0),
DEVICE("at91_pit", PIT, 0),
DEVICE("at91_pio", PIOA, 0),
DEVICE("at91_pio", PIOB, 1),
DEVICE("at91_pio", PIOC, 2),
DEVICE("at91_twi", TWI, 0),
DEVICE("at91_mci", MCI, 0),
DEVICE("uart", DBGU, 0),
DEVICE("uart", USART0, 1),
DEVICE("uart", USART1, 2),
DEVICE("uart", USART2, 3),
DEVICE("uart", USART3, 4),
DEVICE("uart", USART4, 5),
DEVICE("uart", USART5, 6),
DEVICE("spi", SPI0, 0),
DEVICE("spi", SPI1, 1),
DEVICE("ate", EMAC, 0),
DEVICE("macb", EMAC, 0),
DEVICE("nand", NAND, 0),
DEVICE("ohci", OHCI, 0),
{ 0, 0, 0, 0, 0 }
};
/*
* The following is unused currently since we don't ever set the PLLA
* frequency of the device.
*/
static uint32_t
at91_pll_outa(int freq)
{
uint32_t outa = 0;
/*
* Set OUTA, per the data sheet. See Table 40-15 titled
* PLLA Characteristics in the SAM9260 doc.
*/
if (freq > 155000000)
outa = 2 << 14;
return ((1 << 29) | outa);
}
static uint32_t
at91_pll_outb(int freq)
{
return (1 << 14);
}
static void
at91_clock_init(void)
{
struct at91_pmc_clock *clk;
/* Update USB device port clock info */
clk = at91_pmc_clock_ref("udpck");
clk->pmc_mask = PMC_SCER_UDP_SAM9;
at91_pmc_clock_deref(clk);
/* Update USB host port clock info */
clk = at91_pmc_clock_ref("uhpck");
clk->pmc_mask = PMC_SCER_UHP_SAM9;
at91_pmc_clock_deref(clk);
/* Each SOC has different PLL contraints */
clk = at91_pmc_clock_ref("plla");
clk->pll_min_in = SAM9260_PLL_A_MIN_IN_FREQ; /* 1 MHz */
clk->pll_max_in = SAM9260_PLL_A_MAX_IN_FREQ; /* 32 MHz */
clk->pll_min_out = SAM9260_PLL_A_MIN_OUT_FREQ; /* 80 MHz */
clk->pll_max_out = SAM9260_PLL_A_MAX_OUT_FREQ; /* 240 MHz */
clk->pll_mul_shift = SAM9260_PLL_A_MUL_SHIFT;
clk->pll_mul_mask = SAM9260_PLL_A_MUL_MASK;
clk->pll_div_shift = SAM9260_PLL_A_DIV_SHIFT;
clk->pll_div_mask = SAM9260_PLL_A_DIV_MASK;
clk->set_outb = at91_pll_outa;
at91_pmc_clock_deref(clk);
/*
* Fudge MAX pll in frequence down below 3.0 MHz to ensure
* PMC alogrithm choose the divisor that causes the input clock
* to be near the optimal 2 MHz per datasheet. We know
* we are going to be using this for the USB clock at 96 MHz.
* Causes no extra frequency deviation for all recomended crystal
* values. See Note 1, table 40-16 SAM9260 doc.
*/
clk = at91_pmc_clock_ref("pllb");
clk->pll_min_in = SAM9260_PLL_B_MIN_IN_FREQ; /* 1 MHz */
clk->pll_max_in = SAM9260_PLL_B_MAX_IN_FREQ; /* 5 MHz */
clk->pll_max_in = 2999999; /* ~3 MHz */
clk->pll_min_out = SAM9260_PLL_B_MIN_OUT_FREQ; /* 70 MHz */
clk->pll_max_out = SAM9260_PLL_B_MAX_OUT_FREQ; /* 130 MHz */
clk->pll_mul_shift = SAM9260_PLL_B_MUL_SHIFT;
clk->pll_mul_mask = SAM9260_PLL_B_MUL_MASK;
clk->pll_div_shift = SAM9260_PLL_B_DIV_SHIFT;
clk->pll_div_mask = SAM9260_PLL_B_DIV_MASK;
clk->set_outb = at91_pll_outb;
at91_pmc_clock_deref(clk);
}
static struct at91_soc_data soc_data = {
.soc_delay = at91_pit_delay,
.soc_reset = at91_rst_cpu_reset,
.soc_clock_init = at91_clock_init,
.soc_irq_prio = at91_irq_prio,
.soc_children = at91_devs,
};
AT91_SOC(AT91_T_SAM9260, &soc_data);
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