2 * Device Tree support for Armada 370 and XP platforms.
4 * Copyright (C) 2012 Marvell
6 * Lior Amsalem <alior@marvell.com>
7 * Gregory CLEMENT <gregory.clement@free-electrons.com>
8 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without any
12 * warranty of any kind, whether express or implied.
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/clk-provider.h>
18 #include <linux/of_address.h>
19 #include <linux/of_platform.h>
21 #include <linux/clocksource.h>
22 #include <linux/dma-mapping.h>
23 #include <linux/mbus.h>
24 #include <asm/hardware/cache-l2x0.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 #include <asm/mach/time.h>
28 #include "armada-370-xp.h"
30 #include "coherency.h"
32 static void __init armada_370_xp_map_io(void)
38 * This initialization will be replaced by a DT-based
39 * initialization once the mvebu-mbus driver gains DT support.
42 #define ARMADA_370_XP_MBUS_WINS_OFFS 0x20000
43 #define ARMADA_370_XP_MBUS_WINS_SIZE 0x100
44 #define ARMADA_370_XP_SDRAM_WINS_OFFS 0x20180
45 #define ARMADA_370_XP_SDRAM_WINS_SIZE 0x20
47 static void __init armada_370_xp_mbus_init(void)
50 struct device_node *dn;
51 const __be32 mbus_wins_offs = cpu_to_be32(ARMADA_370_XP_MBUS_WINS_OFFS);
52 const __be32 sdram_wins_offs = cpu_to_be32(ARMADA_370_XP_SDRAM_WINS_OFFS);
54 if (of_machine_is_compatible("marvell,armada370"))
55 mbus_soc_name = "marvell,armada370-mbus";
57 mbus_soc_name = "marvell,armadaxp-mbus";
59 dn = of_find_node_by_name(NULL, "internal-regs");
62 mvebu_mbus_init(mbus_soc_name,
63 of_translate_address(dn, &mbus_wins_offs),
64 ARMADA_370_XP_MBUS_WINS_SIZE,
65 of_translate_address(dn, &sdram_wins_offs),
66 ARMADA_370_XP_SDRAM_WINS_SIZE);
69 static void __init armada_370_xp_timer_and_clk_init(void)
72 clocksource_of_init();
74 armada_370_xp_mbus_init();
75 #ifdef CONFIG_CACHE_L2X0
76 l2x0_of_init(0, ~0UL);
80 static void __init armada_370_xp_dt_init(void)
82 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
85 static const char * const armada_370_xp_dt_compat[] = {
86 "marvell,armada-370-xp",
90 DT_MACHINE_START(ARMADA_XP_DT, "Marvell Armada 370/XP (Device Tree)")
91 .smp = smp_ops(armada_xp_smp_ops),
92 .init_machine = armada_370_xp_dt_init,
93 .map_io = armada_370_xp_map_io,
94 .init_time = armada_370_xp_timer_and_clk_init,
95 .restart = mvebu_restart,
96 .dt_compat = armada_370_xp_dt_compat,