/*- * 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #define _ARM32_BUS_DMA_PRIVATE #include #include #include #include #include #include #include #include #include #include /* * 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);