1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Samsung's S5PC110/S5PV210 flattened device tree enabled machine. 4 // 5 // Copyright (c) 2013-2014 Samsung Electronics Co., Ltd. 6 // Mateusz Krawczuk <m.krawczuk@partner.samsung.com> 7 // Tomasz Figa <t.figa@samsung.com> 8 9 #include <linux/of_fdt.h> 10 #include <linux/of_platform.h> 11 12 #include <asm/mach/arch.h> 13 #include <asm/mach/map.h> 14 #include <asm/system_misc.h> 15 16 #include <plat/map-base.h> 17 18 #include "common.h" 19 #include "regs-clock.h" 20 21 static int __init s5pv210_fdt_map_sys(unsigned long node, const char *uname, 22 int depth, void *data) 23 { 24 struct map_desc iodesc; 25 const __be32 *reg; 26 int len; 27 28 if (!of_flat_dt_is_compatible(node, "samsung,s5pv210-clock")) 29 return 0; 30 31 reg = of_get_flat_dt_prop(node, "reg", &len); 32 if (reg == NULL || len != (sizeof(unsigned long) * 2)) 33 return 0; 34 35 iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); 36 iodesc.length = be32_to_cpu(reg[1]) - 1; 37 iodesc.virtual = (unsigned long)S3C_VA_SYS; 38 iodesc.type = MT_DEVICE; 39 iotable_init(&iodesc, 1); 40 41 return 1; 42 } 43 44 static void __init s5pv210_dt_map_io(void) 45 { 46 debug_ll_io_init(); 47 48 of_scan_flat_dt(s5pv210_fdt_map_sys, NULL); 49 } 50 51 static void s5pv210_dt_restart(enum reboot_mode mode, const char *cmd) 52 { 53 __raw_writel(0x1, S5P_SWRESET); 54 } 55 56 static void __init s5pv210_dt_init_late(void) 57 { 58 platform_device_register_simple("s5pv210-cpufreq", -1, NULL, 0); 59 s5pv210_pm_init(); 60 } 61 62 static char const *const s5pv210_dt_compat[] __initconst = { 63 "samsung,s5pc110", 64 "samsung,s5pv210", 65 NULL 66 }; 67 68 DT_MACHINE_START(S5PV210_DT, "Samsung S5PC110/S5PV210-based board") 69 .dt_compat = s5pv210_dt_compat, 70 .map_io = s5pv210_dt_map_io, 71 .restart = s5pv210_dt_restart, 72 .init_late = s5pv210_dt_init_late, 73 MACHINE_END 74