2 * Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
4 * arch/arm/mach-kirkwood/board-dt.c
6 * Flattened Device Tree board initialization
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.
13 #include <linux/kernel.h>
14 #include <linux/init.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>
25 #include <plat/common.h>
28 static struct of_device_id kirkwood_dt_match_table[] __initdata = {
29 { .compatible = "simple-bus", },
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
39 static void __init kirkwood_legacy_clk_init(void)
42 struct device_node *np = of_find_compatible_node(
43 NULL, NULL, "marvell,kirkwood-gating-clock");
44 struct of_phandle_args clkspec;
48 clkspec.args_count = 1;
50 clkspec.args[0] = CGC_BIT_PEX0;
51 orion_clkdev_add("0", "pcie",
52 of_clk_get_from_provider(&clkspec));
54 clkspec.args[0] = CGC_BIT_PEX1;
55 orion_clkdev_add("1", "pcie",
56 of_clk_get_from_provider(&clkspec));
58 clkspec.args[0] = CGC_BIT_SDIO;
59 orion_clkdev_add(NULL, "mvsdio",
60 of_clk_get_from_provider(&clkspec));
63 * The ethernet interfaces forget the MAC address assigned by
64 * u-boot if the clocks are turned off. Until proper DT support
65 * is available we always enable them for now.
67 clkspec.args[0] = CGC_BIT_GE0;
68 clk = of_clk_get_from_provider(&clkspec);
69 orion_clkdev_add(NULL, "mv643xx_eth_port.0", clk);
70 clk_prepare_enable(clk);
72 clkspec.args[0] = CGC_BIT_GE1;
73 clk = of_clk_get_from_provider(&clkspec);
74 orion_clkdev_add(NULL, "mv643xx_eth_port.1", clk);
75 clk_prepare_enable(clk);
78 static void __init kirkwood_of_clk_init(void)
81 kirkwood_legacy_clk_init();
84 static void __init kirkwood_dt_init(void)
86 pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
89 * Disable propagation of mbus errors to the CPU local bus,
90 * as this causes mbus errors (which can occur for example
91 * for PCI aborts) to throw CPU aborts, which we're not set
94 writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
96 kirkwood_setup_cpu_mbus();
100 /* Setup root of clk tree */
101 kirkwood_of_clk_init();
103 kirkwood_cpuidle_init();
106 kexec_reinit = kirkwood_enable_pcie;
109 if (of_machine_is_compatible("globalscale,dreamplug"))
112 if (of_machine_is_compatible("globalscale,guruplug"))
115 if (of_machine_is_compatible("dlink,dns-kirkwood"))
118 if (of_machine_is_compatible("iom,iconnect"))
121 if (of_machine_is_compatible("raidsonic,ib-nas62x0"))
124 if (of_machine_is_compatible("qnap,ts219"))
125 qnap_dt_ts219_init();
127 if (of_machine_is_compatible("seagate,dockstar"))
130 if (of_machine_is_compatible("seagate,goflexnet"))
133 if (of_machine_is_compatible("buffalo,lsxl"))
136 if (of_machine_is_compatible("iom,ix2-200"))
137 iomega_ix2_200_init();
139 if (of_machine_is_compatible("keymile,km_kirkwood"))
142 if (of_machine_is_compatible("lacie,inetspace_v2") ||
143 of_machine_is_compatible("lacie,netspace_v2") ||
144 of_machine_is_compatible("lacie,netspace_max_v2") ||
145 of_machine_is_compatible("lacie,netspace_lite_v2") ||
146 of_machine_is_compatible("lacie,netspace_mini_v2"))
149 if (of_machine_is_compatible("mpl,cec4"))
152 if (of_machine_is_compatible("plathome,openblocks-a6"))
153 openblocks_a6_init();
155 if (of_machine_is_compatible("usi,topkick"))
158 of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL);
161 static const char * const kirkwood_dt_board_compat[] = {
162 "globalscale,dreamplug",
163 "globalscale,guruplug",
167 "raidsonic,ib-nas62x0",
173 "keymile,km_kirkwood",
174 "lacie,inetspace_v2",
175 "lacie,netspace_max_v2",
177 "lacie,netspace_lite_v2",
178 "lacie,netspace_mini_v2",
180 "plathome,openblocks-a6",
186 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
187 /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
188 .map_io = kirkwood_map_io,
189 .init_early = kirkwood_init_early,
190 .init_irq = orion_dt_init_irq,
191 .init_time = kirkwood_timer_init,
192 .init_machine = kirkwood_dt_init,
193 .restart = kirkwood_restart,
194 .dt_compat = kirkwood_dt_board_compat,