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/types.h> 11 #include <linux/init.h> 12 #include <linux/module.h> 13 #include <linux/gpio.h> 14 #include <linux/micrel_phy.h> 15 #include <linux/of.h> 16 #include <linux/of_irq.h> 17 #include <linux/of_platform.h> 18 #include <linux/phy.h> 19 #include <linux/clk-provider.h> 20 #include <linux/phy.h> 21 22 #include <mach/hardware.h> 23 24 #include <asm/setup.h> 25 #include <asm/irq.h> 26 #include <asm/mach/arch.h> 27 #include <asm/mach/map.h> 28 #include <asm/mach/irq.h> 29 30 #include "generic.h" 31 32 static int ksz8081_phy_fixup(struct phy_device *phy) 33 { 34 int value; 35 36 value = phy_read(phy, 0x16); 37 value &= ~0x20; 38 phy_write(phy, 0x16, value); 39 40 return 0; 41 } 42 43 static void __init sama5_dt_device_init(void) 44 { 45 if (of_machine_is_compatible("atmel,sama5d4ek") && 46 IS_ENABLED(CONFIG_PHYLIB)) { 47 phy_register_fixup_for_id("fc028000.etherne:00", 48 ksz8081_phy_fixup); 49 } 50 51 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 52 at91sam9x5_pm_init(); 53 } 54 55 static const char *sama5_dt_board_compat[] __initconst = { 56 "atmel,sama5", 57 NULL 58 }; 59 60 DT_MACHINE_START(sama5_dt, "Atmel SAMA5") 61 /* Maintainer: Atmel */ 62 .map_io = at91_map_io, 63 .init_machine = sama5_dt_device_init, 64 .dt_compat = sama5_dt_board_compat, 65 MACHINE_END 66 67 static struct map_desc at91_io_desc[] __initdata = { 68 { 69 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_MPDDRC), 70 .pfn = __phys_to_pfn(SAMA5D4_BASE_MPDDRC), 71 .length = SZ_512, 72 .type = MT_DEVICE, 73 }, 74 { 75 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_PMC), 76 .pfn = __phys_to_pfn(SAMA5D4_BASE_PMC), 77 .length = SZ_512, 78 .type = MT_DEVICE, 79 }, 80 { /* On sama5d4, we use USART3 as serial console */ 81 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_USART3), 82 .pfn = __phys_to_pfn(SAMA5D4_BASE_USART3), 83 .length = SZ_256, 84 .type = MT_DEVICE, 85 }, 86 { /* A bunch of peripheral with fine grained IO space */ 87 .virtual = (unsigned long)AT91_ALT_IO_P2V(SAMA5D4_BASE_SYS2), 88 .pfn = __phys_to_pfn(SAMA5D4_BASE_SYS2), 89 .length = SZ_2K, 90 .type = MT_DEVICE, 91 }, 92 }; 93 94 static void __init sama5_alt_map_io(void) 95 { 96 at91_alt_map_io(); 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