Merge tag 'mvebu_cache_l2x0_for_3.8' of git://git.infradead.org/users/jcooper/linux...
[~shefty/rdma-dev.git] / arch / arm / mach-kirkwood / board-dt.c
1 /*
2  * Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
3  *
4  * arch/arm/mach-kirkwood/board-dt.c
5  *
6  * Flattened Device Tree board initialization
7  *
8  * This file is licensed under the terms of the GNU General Public
9  * License version 2.  This program is licensed "as is" without any
10  * warranty of any kind, whether express or implied.
11  */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/of.h>
16 #include <linux/of_platform.h>
17 #include <linux/clk-provider.h>
18 #include <linux/clk/mvebu.h>
19 #include <linux/kexec.h>
20 #include <asm/mach/arch.h>
21 #include <asm/mach/map.h>
22 #include <mach/bridge-regs.h>
23 #include <linux/platform_data/usb-ehci-orion.h>
24 #include <plat/irq.h>
25 #include <plat/common.h>
26 #include "common.h"
27
28 static struct of_device_id kirkwood_dt_match_table[] __initdata = {
29         { .compatible = "simple-bus", },
30         { }
31 };
32
33 /*
34  * There are still devices that doesn't know about DT yet.  Get clock
35  * gates here and add a clock lookup alias, so that old platform
36  * devices still work.
37 */
38
39 static void __init kirkwood_legacy_clk_init(void)
40 {
41
42         struct device_node *np = of_find_compatible_node(
43                 NULL, NULL, "marvell,kirkwood-gating-clock");
44
45         struct of_phandle_args clkspec;
46
47         clkspec.np = np;
48         clkspec.args_count = 1;
49
50         clkspec.args[0] = CGC_BIT_GE0;
51         orion_clkdev_add(NULL, "mv643xx_eth_port.0",
52                          of_clk_get_from_provider(&clkspec));
53
54         clkspec.args[0] = CGC_BIT_PEX0;
55         orion_clkdev_add("0", "pcie",
56                          of_clk_get_from_provider(&clkspec));
57
58         clkspec.args[0] = CGC_BIT_USB0;
59         orion_clkdev_add(NULL, "orion-ehci.0",
60                          of_clk_get_from_provider(&clkspec));
61
62         clkspec.args[0] = CGC_BIT_PEX1;
63         orion_clkdev_add("1", "pcie",
64                          of_clk_get_from_provider(&clkspec));
65
66         clkspec.args[0] = CGC_BIT_GE1;
67         orion_clkdev_add(NULL, "mv643xx_eth_port.1",
68                          of_clk_get_from_provider(&clkspec));
69
70 }
71
72 static void __init kirkwood_of_clk_init(void)
73 {
74         mvebu_clocks_init();
75         kirkwood_legacy_clk_init();
76 }
77
78 static void __init kirkwood_dt_init(void)
79 {
80         pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
81
82         /*
83          * Disable propagation of mbus errors to the CPU local bus,
84          * as this causes mbus errors (which can occur for example
85          * for PCI aborts) to throw CPU aborts, which we're not set
86          * up to deal with.
87          */
88         writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
89
90         kirkwood_setup_cpu_mbus();
91
92         kirkwood_l2_init();
93
94         /* Setup root of clk tree */
95         kirkwood_of_clk_init();
96
97 #ifdef CONFIG_KEXEC
98         kexec_reinit = kirkwood_enable_pcie;
99 #endif
100
101         if (of_machine_is_compatible("globalscale,dreamplug"))
102                 dreamplug_init();
103
104         if (of_machine_is_compatible("dlink,dns-kirkwood"))
105                 dnskw_init();
106
107         if (of_machine_is_compatible("iom,iconnect"))
108                 iconnect_init();
109
110         if (of_machine_is_compatible("raidsonic,ib-nas62x0"))
111                 ib62x0_init();
112
113         if (of_machine_is_compatible("qnap,ts219"))
114                 qnap_dt_ts219_init();
115
116         if (of_machine_is_compatible("seagate,dockstar"))
117                 dockstar_dt_init();
118
119         if (of_machine_is_compatible("seagate,goflexnet"))
120                 goflexnet_init();
121
122         if (of_machine_is_compatible("buffalo,lsxl"))
123                 lsxl_init();
124
125         if (of_machine_is_compatible("iom,ix2-200"))
126                 iomega_ix2_200_init();
127
128         if (of_machine_is_compatible("keymile,km_kirkwood"))
129                 km_kirkwood_init();
130
131         of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL);
132 }
133
134 static const char *kirkwood_dt_board_compat[] = {
135         "globalscale,dreamplug",
136         "dlink,dns-320",
137         "dlink,dns-325",
138         "iom,iconnect",
139         "raidsonic,ib-nas62x0",
140         "qnap,ts219",
141         "seagate,dockstar",
142         "seagate,goflexnet",
143         "buffalo,lsxl",
144         "iom,ix2-200",
145         "keymile,km_kirkwood",
146         NULL
147 };
148
149 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
150         /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
151         .map_io         = kirkwood_map_io,
152         .init_early     = kirkwood_init_early,
153         .init_irq       = orion_dt_init_irq,
154         .timer          = &kirkwood_timer,
155         .init_machine   = kirkwood_dt_init,
156         .restart        = kirkwood_restart,
157         .dt_compat      = kirkwood_dt_board_compat,
158 MACHINE_END