summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-exynos/mach-exynos5-dt.c
blob: 0deeecffa3aef2c5992c3998078f7b2ffc09ecf8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/*
 * SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#include <linux/of_platform.h>
#include <linux/of_fdt.h>
#include <linux/serial_core.h>
#include <linux/memblock.h>
#include <linux/io.h>

#include <asm/mach/arch.h>
#include <mach/map.h>
#include <mach/regs-pmu.h>

#include <plat/cpu.h>
#include <plat/regs-serial.h>
#include <plat/mfc.h>

#include "common.h"

/*
 * The following lookup table is used to override device names when devices
 * are registered from device tree. This is temporarily added to enable
 * device tree support addition for the EXYNOS5 architecture.
 *
 * For drivers that require platform data to be provided from the machine
 * file, a platform data pointer can also be supplied along with the
 * devices names. Usually, the platform data elements that cannot be parsed
 * from the device tree by the drivers (example: function pointers) are
 * supplied. But it should be noted that this is a temporary mechanism and
 * at some point, the drivers should be capable of parsing all the platform
 * data from the device tree.
 */
static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART0,
				"exynos4210-uart.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART1,
				"exynos4210-uart.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART2,
				"exynos4210-uart.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART3,
				"exynos4210-uart.3", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(0),
				"s3c2440-i2c.0", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
				"s3c2440-i2c.1", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(2),
				"s3c2440-i2c.2", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(3),
				"s3c2440-i2c.3", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(4),
				"s3c2440-i2c.4", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(5),
				"s3c2440-i2c.5", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(6),
				"s3c2440-i2c.6", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(7),
				"s3c2440-i2c.7", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
				"s3c2440-hdmiphy-i2c", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,
				"dw_mmc.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI1,
				"dw_mmc.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI2,
				"dw_mmc.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI3,
				"dw_mmc.3", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI0,
				"exynos4210-spi.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI1,
				"exynos4210-spi.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI2,
				"exynos4210-spi.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-sata-ahci", 0x122F0000,
				"exynos5-sata", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-sata-phy", 0x12170000,
				"exynos5-sata-phy", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-sata-phy-i2c", 0x121D0000,
				"exynos5-sata-phy-i2c", NULL),
	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL),
	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL),
	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_MDMA1, "dma-pl330.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC0,
				"exynos-gsc.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC1,
				"exynos-gsc.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC2,
				"exynos-gsc.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3,
				"exynos-gsc.3", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-hdmi", 0x14530000,
				"exynos5-hdmi", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-mixer", 0x14450000,
				"exynos5-mixer", NULL),
	OF_DEV_AUXDATA("samsung,mfc-v6", 0x11000000, "s5p-mfc-v6", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-tmu", 0x10060000,
				"exynos-tmu", NULL),
	{},
};

static const struct of_dev_auxdata exynos5440_auxdata_lookup[] __initconst = {
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5440_PA_UART0,
				"exynos4210-uart.0", NULL),
	{},
};

static void __init exynos5_dt_map_io(void)
{
	unsigned long root = of_get_flat_dt_root();

	exynos_init_io(NULL, 0);

	if (of_flat_dt_is_compatible(root, "samsung,exynos5250"))
		s3c24xx_init_clocks(24000000);
}

static void __init exynos5_dt_machine_init(void)
{
	struct device_node *i2c_np;
	const char *i2c_compat = "samsung,s3c2440-i2c";
	unsigned int tmp;

	/*
	 * Exynos5's legacy i2c controller and new high speed i2c
	 * controller have muxed interrupt sources. By default the
	 * interrupts for 4-channel HS-I2C controller are enabled.
	 * If node for first four channels of legacy i2c controller
	 * are available then re-configure the interrupts via the
	 * system register.
	 */
	for_each_compatible_node(i2c_np, NULL, i2c_compat) {
		if (of_device_is_available(i2c_np)) {
			if (of_alias_get_id(i2c_np, "i2c") < 4) {
				tmp = readl(EXYNOS5_SYS_I2C_CFG);
				writel(tmp & ~(0x1 << of_alias_get_id(i2c_np, "i2c")),
						EXYNOS5_SYS_I2C_CFG);
			}
		}
	}

	if (of_machine_is_compatible("samsung,exynos5250"))
		of_platform_populate(NULL, of_default_bus_match_table,
				     exynos5250_auxdata_lookup, NULL);
	else if (of_machine_is_compatible("samsung,exynos5440"))
		of_platform_populate(NULL, of_default_bus_match_table,
				     exynos5440_auxdata_lookup, NULL);
}

static char const *exynos5_dt_compat[] __initdata = {
	"samsung,exynos5250",
	"samsung,exynos5440",
	NULL
};

static void __init exynos5_reserve(void)
{
#ifdef CONFIG_S5P_DEV_MFC
	struct s5p_mfc_dt_meminfo mfc_mem;

	/* Reserve memory for MFC only if it's available */
	mfc_mem.compatible = "samsung,mfc-v6";
	if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
		s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
				mfc_mem.lsize);
#endif
}

DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
	/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
	.init_irq	= exynos5_init_irq,
	.smp		= smp_ops(exynos_smp_ops),
	.map_io		= exynos5_dt_map_io,
	.init_machine	= exynos5_dt_machine_init,
	.init_late	= exynos_init_late,
	.init_time	= exynos4_timer_init,
	.dt_compat	= exynos5_dt_compat,
	.restart        = exynos5_restart,
	.reserve	= exynos5_reserve,
MACHINE_END