1 /* 2 * Samsung's S5PC110/S5PV210 flattened device tree enabled machine. 3 * 4 * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd. 5 * Mateusz Krawczuk <m.krawczuk@partner.samsung.com> 6 * Tomasz Figa <t.figa@samsung.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/of_fdt.h> 14 #include <linux/of_platform.h> 15 16 #include <asm/mach/arch.h> 17 #include <asm/mach/map.h> 18 #include <asm/system_misc.h> 19 20 #include <plat/map-base.h> 21 22 #include "common.h" 23 #include "regs-clock.h" 24 25 static int __init s5pv210_fdt_map_sys(unsigned long node, const char *uname, 26 int depth, void *data) 27 { 28 struct map_desc iodesc; 29 const __be32 *reg; 30 int len; 31 32 if (!of_flat_dt_is_compatible(node, "samsung,s5pv210-clock")) 33 return 0; 34 35 reg = of_get_flat_dt_prop(node, "reg", &len); 36 if (reg == NULL || len != (sizeof(unsigned long) * 2)) 37 return 0; 38 39 iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); 40 iodesc.length = be32_to_cpu(reg[1]) - 1; 41 iodesc.virtual = (unsigned long)S3C_VA_SYS; 42 iodesc.type = MT_DEVICE; 43 iotable_init(&iodesc, 1); 44 45 return 1; 46 } 47 48 static void __init s5pv210_dt_map_io(void) 49 { 50 debug_ll_io_init(); 51 52 of_scan_flat_dt(s5pv210_fdt_map_sys, NULL); 53 } 54 55 static void s5pv210_dt_restart(enum reboot_mode mode, const char *cmd) 56 { 57 __raw_writel(0x1, S5P_SWRESET); 58 } 59 60 static void __init s5pv210_dt_init_late(void) 61 { 62 platform_device_register_simple("s5pv210-cpufreq", -1, NULL, 0); 63 s5pv210_pm_init(); 64 } 65 66 static char const *const s5pv210_dt_compat[] __initconst = { 67 "samsung,s5pc110", 68 "samsung,s5pv210", 69 NULL 70 }; 71 72 DT_MACHINE_START(S5PV210_DT, "Samsung S5PC110/S5PV210-based board") 73 .dt_compat = s5pv210_dt_compat, 74 .map_io = s5pv210_dt_map_io, 75 .restart = s5pv210_dt_restart, 76 .init_late = s5pv210_dt_init_late, 77 MACHINE_END 78