1 /* 2 * Setup code for SAMA5 3 * 4 * Copyright (C) 2013 Atmel, 5 * 2013 Ludovic Desroches <ludovic.desroches@atmel.com> 6 * 7 * Licensed under GPLv2 or later. 8 */ 9 10 #include <linux/of.h> 11 #include <linux/of_platform.h> 12 13 #include <asm/mach/arch.h> 14 #include <asm/mach/map.h> 15 #include <asm/system_misc.h> 16 17 #include <mach/hardware.h> 18 19 #include "generic.h" 20 #include "soc.h" 21 22 static const struct at91_soc sama5_socs[] = { 23 AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D31_EXID_MATCH, 24 "sama5d31", "sama5d3"), 25 AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D33_EXID_MATCH, 26 "sama5d33", "sama5d3"), 27 AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D34_EXID_MATCH, 28 "sama5d34", "sama5d3"), 29 AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D35_EXID_MATCH, 30 "sama5d35", "sama5d3"), 31 AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D36_EXID_MATCH, 32 "sama5d36", "sama5d3"), 33 AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D41_EXID_MATCH, 34 "sama5d41", "sama5d4"), 35 AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D42_EXID_MATCH, 36 "sama5d42", "sama5d4"), 37 AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D43_EXID_MATCH, 38 "sama5d43", "sama5d4"), 39 AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D44_EXID_MATCH, 40 "sama5d44", "sama5d4"), 41 { /* sentinel */ }, 42 }; 43 44 static void __init sama5_dt_device_init(void) 45 { 46 struct soc_device *soc; 47 struct device *soc_dev = NULL; 48 49 soc = at91_soc_init(sama5_socs); 50 if (soc != NULL) 51 soc_dev = soc_device_to_device(soc); 52 53 of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev); 54 at91sam9x5_pm_init(); 55 } 56 57 static const char *sama5_dt_board_compat[] __initconst = { 58 "atmel,sama5", 59 NULL 60 }; 61 62 DT_MACHINE_START(sama5_dt, "Atmel SAMA5") 63 /* Maintainer: Atmel */ 64 .init_machine = sama5_dt_device_init, 65 .dt_compat = sama5_dt_board_compat, 66 MACHINE_END 67 68 static struct map_desc at91_io_desc[] __initdata = { 69 { 70 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC), 71 .pfn = __phys_to_pfn(SAMA5D4_BASE_MPDDRC), 72 .length = SZ_512, 73 .type = MT_DEVICE, 74 }, 75 { 76 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC), 77 .pfn = __phys_to_pfn(SAMA5D4_BASE_PMC), 78 .length = SZ_512, 79 .type = MT_DEVICE, 80 }, 81 { /* On sama5d4, we use USART3 as serial console */ 82 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3), 83 .pfn = __phys_to_pfn(SAMA5D4_BASE_USART3), 84 .length = SZ_256, 85 .type = MT_DEVICE, 86 }, 87 { /* A bunch of peripheral with fine grained IO space */ 88 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2), 89 .pfn = __phys_to_pfn(SAMA5D4_BASE_SYS2), 90 .length = SZ_2K, 91 .type = MT_DEVICE, 92 }, 93 }; 94 95 static void __init sama5_alt_map_io(void) 96 { 97 iotable_init(at91_io_desc, ARRAY_SIZE(at91_io_desc)); 98 } 99 100 static const char *sama5_alt_dt_board_compat[] __initconst = { 101 "atmel,sama5d4", 102 NULL 103 }; 104 105 DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5") 106 /* Maintainer: Atmel */ 107 .map_io = sama5_alt_map_io, 108 .init_machine = sama5_dt_device_init, 109 .dt_compat = sama5_alt_dt_board_compat, 110 .l2c_aux_mask = ~0UL, 111 MACHINE_END 112