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/serial_core.h>
15 #include <linux/memblock.h>
18 #include <asm/mach/arch.h>
20 #include <mach/regs-pmu.h>
23 #include <plat/regs-serial.h>
29 * The following lookup table is used to override device names when devices
30 * are registered from device tree. This is temporarily added to enable
31 * device tree support addition for the EXYNOS5 architecture.
33 * For drivers that require platform data to be provided from the machine
34 * file, a platform data pointer can also be supplied along with the
35 * devices names. Usually, the platform data elements that cannot be parsed
36 * from the device tree by the drivers (example: function pointers) are
37 * supplied. But it should be noted that this is a temporary mechanism and
38 * at some point, the drivers should be capable of parsing all the platform
39 * data from the device tree.
41 static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
42 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART0,
43 "exynos4210-uart.0", NULL),
44 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART1,
45 "exynos4210-uart.1", NULL),
46 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART2,
47 "exynos4210-uart.2", NULL),
48 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART3,
49 "exynos4210-uart.3", NULL),
50 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(0),
51 "s3c2440-i2c.0", NULL),
52 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
53 "s3c2440-i2c.1", NULL),
54 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(2),
55 "s3c2440-i2c.2", NULL),
56 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(3),
57 "s3c2440-i2c.3", NULL),
58 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(4),
59 "s3c2440-i2c.4", NULL),
60 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(5),
61 "s3c2440-i2c.5", NULL),
62 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(6),
63 "s3c2440-i2c.6", NULL),
64 OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(7),
65 "s3c2440-i2c.7", NULL),
66 OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
67 "s3c2440-hdmiphy-i2c", NULL),
68 OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,
70 OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI1,
72 OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI2,
74 OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI3,
76 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI0,
77 "exynos4210-spi.0", NULL),
78 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI1,
79 "exynos4210-spi.1", NULL),
80 OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI2,
81 "exynos4210-spi.2", NULL),
82 OF_DEV_AUXDATA("samsung,exynos5-sata-ahci", 0x122F0000,
83 "exynos5-sata", NULL),
84 OF_DEV_AUXDATA("samsung,exynos5-sata-phy", 0x12170000,
85 "exynos5-sata-phy", NULL),
86 OF_DEV_AUXDATA("samsung,exynos5-sata-phy-i2c", 0x121D0000,
87 "exynos5-sata-phy-i2c", NULL),
88 OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL),
89 OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL),
90 OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_MDMA1, "dma-pl330.2", NULL),
91 OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC0,
92 "exynos-gsc.0", NULL),
93 OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC1,
94 "exynos-gsc.1", NULL),
95 OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC2,
96 "exynos-gsc.2", NULL),
97 OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3,
98 "exynos-gsc.3", NULL),
99 OF_DEV_AUXDATA("samsung,exynos5-hdmi", 0x14530000,
100 "exynos5-hdmi", NULL),
101 OF_DEV_AUXDATA("samsung,exynos5-mixer", 0x14450000,
102 "exynos5-mixer", NULL),
103 OF_DEV_AUXDATA("samsung,mfc-v6", 0x11000000, "s5p-mfc-v6", NULL),
104 OF_DEV_AUXDATA("samsung,exynos5250-tmu", 0x10060000,
106 OF_DEV_AUXDATA("samsung,i2s-v5", 0x03830000,
107 "samsung-i2s.0", NULL),
108 OF_DEV_AUXDATA("samsung,i2s-v5", 0x12D60000,
109 "samsung-i2s.1", NULL),
110 OF_DEV_AUXDATA("samsung,i2s-v5", 0x12D70000,
111 "samsung-i2s.2", NULL),
115 static const struct of_dev_auxdata exynos5440_auxdata_lookup[] __initconst = {
116 OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5440_PA_UART0,
117 "exynos4210-uart.0", NULL),
121 static void __init exynos5_dt_map_io(void)
123 unsigned long root = of_get_flat_dt_root();
125 exynos_init_io(NULL, 0);
127 if (of_flat_dt_is_compatible(root, "samsung,exynos5250"))
128 s3c24xx_init_clocks(24000000);
131 static void __init exynos5_dt_machine_init(void)
133 struct device_node *i2c_np;
134 const char *i2c_compat = "samsung,s3c2440-i2c";
138 * Exynos5's legacy i2c controller and new high speed i2c
139 * controller have muxed interrupt sources. By default the
140 * interrupts for 4-channel HS-I2C controller are enabled.
141 * If node for first four channels of legacy i2c controller
142 * are available then re-configure the interrupts via the
145 for_each_compatible_node(i2c_np, NULL, i2c_compat) {
146 if (of_device_is_available(i2c_np)) {
147 if (of_alias_get_id(i2c_np, "i2c") < 4) {
148 tmp = readl(EXYNOS5_SYS_I2C_CFG);
149 writel(tmp & ~(0x1 << of_alias_get_id(i2c_np, "i2c")),
150 EXYNOS5_SYS_I2C_CFG);
155 if (of_machine_is_compatible("samsung,exynos5250"))
156 of_platform_populate(NULL, of_default_bus_match_table,
157 exynos5250_auxdata_lookup, NULL);
158 else if (of_machine_is_compatible("samsung,exynos5440"))
159 of_platform_populate(NULL, of_default_bus_match_table,
160 exynos5440_auxdata_lookup, NULL);
163 static char const *exynos5_dt_compat[] __initdata = {
164 "samsung,exynos5250",
165 "samsung,exynos5440",
169 static void __init exynos5_reserve(void)
171 #ifdef CONFIG_S5P_DEV_MFC
172 struct s5p_mfc_dt_meminfo mfc_mem;
174 /* Reserve memory for MFC only if it's available */
175 mfc_mem.compatible = "samsung,mfc-v6";
176 if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
177 s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
182 DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
183 /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
184 .init_irq = exynos5_init_irq,
185 .smp = smp_ops(exynos_smp_ops),
186 .map_io = exynos5_dt_map_io,
187 .init_machine = exynos5_dt_machine_init,
188 .init_late = exynos_init_late,
189 .init_time = exynos4_timer_init,
190 .dt_compat = exynos5_dt_compat,
191 .restart = exynos5_restart,
192 .reserve = exynos5_reserve,