| Nicolas Ferre | 49fe2ba | 2011-10-10 18:29:24 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Setup code for AT91SAM Evaluation Kits with Device Tree support |
| 3 | * |
| 4 | * Covers: * AT91SAM9G45-EKES board |
| 5 | * * AT91SAM9M10-EKES board |
| 6 | * * AT91SAM9M10G45-EK board |
| 7 | * |
| 8 | * Copyright (C) 2011 Atmel, |
| 9 | * 2011 Nicolas Ferre <nicolas.ferre@atmel.com> |
| 10 | * |
| 11 | * Licensed under GPLv2 or later. |
| 12 | */ |
| 13 | |
| 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> |
| 21 | |
| 22 | #include <mach/hardware.h> |
| 23 | #include <mach/board.h> |
| 24 | #include <mach/system_rev.h> |
| 25 | #include <mach/at91sam9_smc.h> |
| 26 | |
| 27 | #include <asm/setup.h> |
| 28 | #include <asm/irq.h> |
| 29 | #include <asm/mach/arch.h> |
| 30 | #include <asm/mach/map.h> |
| 31 | #include <asm/mach/irq.h> |
| 32 | |
| 33 | #include "sam9_smc.h" |
| 34 | #include "generic.h" |
| 35 | |
| 36 | |
| 37 | static void __init ek_init_early(void) |
| 38 | { |
| 39 | /* Initialize processor: 12.000 MHz crystal */ |
| 40 | at91_initialize(12000000); |
| 41 | |
| 42 | /* DGBU on ttyS0. (Rx & Tx only) */ |
| 43 | at91_register_uart(0, 0, 0); |
| 44 | |
| 45 | /* set serial console to ttyS0 (ie, DBGU) */ |
| 46 | at91_set_serial_console(0); |
| 47 | } |
| 48 | |
| 49 | /* det_pin is not connected */ |
| 50 | static struct atmel_nand_data __initdata ek_nand_data = { |
| 51 | .ale = 21, |
| 52 | .cle = 22, |
| 53 | .rdy_pin = AT91_PIN_PC8, |
| 54 | .enable_pin = AT91_PIN_PC14, |
| 55 | }; |
| 56 | |
| 57 | static struct sam9_smc_config __initdata ek_nand_smc_config = { |
| 58 | .ncs_read_setup = 0, |
| 59 | .nrd_setup = 2, |
| 60 | .ncs_write_setup = 0, |
| 61 | .nwe_setup = 2, |
| 62 | |
| 63 | .ncs_read_pulse = 4, |
| 64 | .nrd_pulse = 4, |
| 65 | .ncs_write_pulse = 4, |
| 66 | .nwe_pulse = 4, |
| 67 | |
| 68 | .read_cycle = 7, |
| 69 | .write_cycle = 7, |
| 70 | |
| 71 | .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE, |
| 72 | .tdf_cycles = 3, |
| 73 | }; |
| 74 | |
| 75 | static void __init ek_add_device_nand(void) |
| 76 | { |
| 77 | ek_nand_data.bus_width_16 = board_have_nand_16bit(); |
| 78 | /* setup bus-width (8 or 16) */ |
| 79 | if (ek_nand_data.bus_width_16) |
| 80 | ek_nand_smc_config.mode |= AT91_SMC_DBW_16; |
| 81 | else |
| 82 | ek_nand_smc_config.mode |= AT91_SMC_DBW_8; |
| 83 | |
| 84 | /* configure chip-select 3 (NAND) */ |
| Jean-Christophe PLAGNIOL-VILLARD | faee0cc | 2011-10-14 01:37:09 +0800 | [diff] [blame^] | 85 | sam9_smc_configure(0, 3, &ek_nand_smc_config); |
| Nicolas Ferre | 49fe2ba | 2011-10-10 18:29:24 +0200 | [diff] [blame] | 86 | |
| 87 | at91_add_device_nand(&ek_nand_data); |
| 88 | } |
| 89 | |
| 90 | static const struct of_device_id aic_of_match[] __initconst = { |
| 91 | { .compatible = "atmel,at91rm9200-aic", }, |
| 92 | {}, |
| 93 | }; |
| 94 | |
| 95 | static void __init at91_dt_init_irq(void) |
| 96 | { |
| 97 | irq_domain_generate_simple(aic_of_match, 0xfffff000, 0); |
| 98 | at91_init_irq_default(); |
| 99 | } |
| 100 | |
| 101 | static void __init at91_dt_device_init(void) |
| 102 | { |
| 103 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
| 104 | |
| 105 | /* NAND */ |
| 106 | ek_add_device_nand(); |
| 107 | } |
| 108 | |
| 109 | static const char *at91_dt_board_compat[] __initdata = { |
| 110 | "atmel,at91sam9m10g45ek", |
| Jean-Christophe PLAGNIOL-VILLARD | fea3158 | 2011-10-14 09:40:52 +0800 | [diff] [blame] | 111 | "calao,usb-a9g20", |
| Nicolas Ferre | 49fe2ba | 2011-10-10 18:29:24 +0200 | [diff] [blame] | 112 | NULL |
| 113 | }; |
| 114 | |
| 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, |
| 123 | MACHINE_END |