2 * SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/of_platform.h>
13 #include <linux/of_fdt.h>
14 #include <linux/memblock.h>
16 #include <linux/clocksource.h>
17 #include <linux/dma-mapping.h>
19 #include <asm/mach/arch.h>
20 #include <mach/regs-pmu.h>
27 static u64 dma_mask64 = DMA_BIT_MASK(64);
29 static void __init exynos5_dt_map_io(void)
31 exynos_init_io(NULL, 0);
34 static int exynos5250_platform_notifier(struct notifier_block *nb,
35 unsigned long event, void *__dev)
37 struct device *dev = __dev;
39 if (event != BUS_NOTIFY_ADD_DEVICE)
42 dev->dma_mask = &dma_mask64;
43 dev->coherent_dma_mask = DMA_BIT_MASK(64);
48 static struct notifier_block exynos5250_platform_nb = {
49 .notifier_call = exynos5250_platform_notifier,
52 static void __init exynos5_dt_machine_init(void)
54 struct device_node *i2c_np;
55 const char *i2c_compat = "samsung,s3c2440-i2c";
59 * Exynos5's legacy i2c controller and new high speed i2c
60 * controller have muxed interrupt sources. By default the
61 * interrupts for 4-channel HS-I2C controller are enabled.
62 * If node for first four channels of legacy i2c controller
63 * are available then re-configure the interrupts via the
66 for_each_compatible_node(i2c_np, NULL, i2c_compat) {
67 if (of_device_is_available(i2c_np)) {
68 if (of_alias_get_id(i2c_np, "i2c") < 4) {
69 tmp = readl(EXYNOS5_SYS_I2C_CFG);
70 writel(tmp & ~(0x1 << of_alias_get_id(i2c_np, "i2c")),
76 if (config_enabled(CONFIG_ARM_LPAE) &&
77 of_machine_is_compatible("samsung,exynos5250"))
78 bus_register_notifier(&platform_bus_type,
79 &exynos5250_platform_nb);
81 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
84 static char const *exynos5_dt_compat[] __initdata = {
90 static void __init exynos5_reserve(void)
92 #ifdef CONFIG_S5P_DEV_MFC
93 struct s5p_mfc_dt_meminfo mfc_mem;
95 /* Reserve memory for MFC only if it's available */
96 mfc_mem.compatible = "samsung,mfc-v6";
97 if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
98 s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
103 DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
104 /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
105 .init_irq = exynos5_init_irq,
106 .smp = smp_ops(exynos_smp_ops),
107 .map_io = exynos5_dt_map_io,
108 .init_machine = exynos5_dt_machine_init,
109 .init_late = exynos_init_late,
110 .init_time = exynos_init_time,
111 .dt_compat = exynos5_dt_compat,
112 .restart = exynos5_restart,
113 .reserve = exynos5_reserve,