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>
18 #include <linux/irqdomain.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
,
52 static struct sam9_smc_config __initdata ek_nand_smc_config
= {
66 .mode
= AT91_SMC_READMODE
| AT91_SMC_WRITEMODE
| AT91_SMC_EXNWMODE_DISABLE
,
70 static void __init
ek_add_device_nand(void)
72 ek_nand_data
.bus_width_16
= board_have_nand_16bit();
73 /* setup bus-width (8 or 16) */
74 if (ek_nand_data
.bus_width_16
)
75 ek_nand_smc_config
.mode
|= AT91_SMC_DBW_16
;
77 ek_nand_smc_config
.mode
|= AT91_SMC_DBW_8
;
79 /* configure chip-select 3 (NAND) */
80 sam9_smc_configure(0, 3, &ek_nand_smc_config
);
82 at91_add_device_nand(&ek_nand_data
);
85 static const struct of_device_id aic_of_match
[] __initconst
= {
86 { .compatible
= "atmel,at91rm9200-aic", },
90 static void __init
at91_dt_init_irq(void)
92 irq_domain_generate_simple(aic_of_match
, 0xfffff000, 0);
93 at91_init_irq_default();
96 static void __init
at91_dt_device_init(void)
98 of_platform_populate(NULL
, of_default_bus_match_table
, NULL
, NULL
);
101 ek_add_device_nand();
104 static const char *at91_dt_board_compat
[] __initdata
= {
105 "atmel,at91sam9m10g45ek",
106 "atmel,at91sam9x5ek",
111 DT_MACHINE_START(at91sam_dt
, "Atmel AT91SAM (Device Tree)")
112 /* Maintainer: Atmel */
113 .timer
= &at91sam926x_timer
,
114 .map_io
= at91_map_io
,
115 .init_early
= ek_init_early
,
116 .init_irq
= at91_dt_init_irq
,
117 .init_machine
= at91_dt_device_init
,
118 .dt_compat
= at91_dt_board_compat
,