2 * Setup code for AT91SAM Evaluation Kits with Device Tree support
4 * Covers: * AT91SAM9G45-EKES board
5 * * AT91SAM9M10-EKES board
6 * * AT91SAM9M10G45-EK board
8 * Copyright (C) 2011 Atmel,
9 * 2011 Nicolas Ferre <nicolas.ferre@atmel.com>
11 * Licensed under GPLv2 or later.
14 #include <linux/types.h>
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/gpio.h>
19 #include <linux/of_irq.h>
20 #include <linux/of_platform.h>
22 #include <mach/hardware.h>
23 #include <mach/board.h>
24 #include <mach/system_rev.h>
25 #include <mach/at91sam9_smc.h>
27 #include <asm/setup.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/irq.h>
37 static void __init ek_init_early(void)
39 /* Initialize processor: 12.000 MHz crystal */
40 at91_initialize(12000000);
43 /* det_pin is not connected */
44 static struct atmel_nand_data __initdata ek_nand_data = {
48 .rdy_pin = AT91_PIN_PC8,
49 .enable_pin = AT91_PIN_PC14,
50 .ecc_mode = NAND_ECC_SOFT,
54 static struct sam9_smc_config __initdata ek_nand_smc_config = {
68 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
72 static void __init ek_add_device_nand(void)
74 ek_nand_data.bus_width_16 = board_have_nand_16bit();
75 /* setup bus-width (8 or 16) */
76 if (ek_nand_data.bus_width_16)
77 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
79 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
81 /* configure chip-select 3 (NAND) */
82 sam9_smc_configure(0, 3, &ek_nand_smc_config);
84 at91_add_device_nand(&ek_nand_data);
87 static const struct of_device_id irq_of_match[] __initconst = {
89 { .compatible = "atmel,at91rm9200-aic", .data = at91_aic_of_init },
90 { .compatible = "atmel,at91rm9200-gpio", .data = at91_gpio_of_irq_setup },
91 { .compatible = "atmel,at91sam9x5-gpio", .data = at91_gpio_of_irq_setup },
95 static void __init at91_dt_init_irq(void)
97 of_irq_init(irq_of_match);
100 static void __init at91_dt_device_init(void)
102 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
105 ek_add_device_nand();
108 static const char *at91_dt_board_compat[] __initdata = {
109 "atmel,at91sam9m10g45ek",
110 "atmel,at91sam9x5ek",
115 DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
116 /* Maintainer: Atmel */
117 .timer = &at91sam926x_timer,
118 .map_io = at91_map_io,
119 .init_early = ek_init_early,
120 .init_irq = at91_dt_init_irq,
121 .init_machine = at91_dt_device_init,
122 .dt_compat = at91_dt_board_compat,