]> Pileus Git - ~andy/linux/blob - arch/arm/mach-mvebu/armada-370-xp.c
Merge branch 'late/clksrc' into late/cleanup
[~andy/linux] / arch / arm / mach-mvebu / armada-370-xp.c
1 /*
2  * Device Tree support for Armada 370 and XP platforms.
3  *
4  * Copyright (C) 2012 Marvell
5  *
6  * Lior Amsalem <alior@marvell.com>
7  * Gregory CLEMENT <gregory.clement@free-electrons.com>
8  * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
9  *
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.
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/of_platform.h>
18 #include <linux/io.h>
19 #include <linux/time-armada-370-xp.h>
20 #include <linux/clk/mvebu.h>
21 #include <linux/dma-mapping.h>
22 #include <linux/irqchip.h>
23 #include <asm/hardware/cache-l2x0.h>
24 #include <asm/mach/arch.h>
25 #include <asm/mach/map.h>
26 #include <asm/mach/time.h>
27 #include "armada-370-xp.h"
28 #include "common.h"
29 #include "coherency.h"
30
31 static struct map_desc armada_370_xp_io_desc[] __initdata = {
32         {
33                 .virtual        = (unsigned long) ARMADA_370_XP_REGS_VIRT_BASE,
34                 .pfn            = __phys_to_pfn(ARMADA_370_XP_REGS_PHYS_BASE),
35                 .length         = ARMADA_370_XP_REGS_SIZE,
36                 .type           = MT_DEVICE,
37         },
38 };
39
40 void __init armada_370_xp_map_io(void)
41 {
42         iotable_init(armada_370_xp_io_desc, ARRAY_SIZE(armada_370_xp_io_desc));
43 }
44
45 void __init armada_370_xp_timer_and_clk_init(void)
46 {
47         mvebu_clocks_init();
48         armada_370_xp_timer_init();
49 }
50
51 void __init armada_370_xp_init_early(void)
52 {
53         /*
54          * Some Armada 370/XP devices allocate their coherent buffers
55          * from atomic context. Increase size of atomic coherent pool
56          * to make sure such the allocations won't fail.
57          */
58         init_dma_coherent_pool_size(SZ_1M);
59
60 #ifdef CONFIG_CACHE_L2X0
61         l2x0_of_init(0, ~0UL);
62 #endif
63 }
64
65 static void __init armada_370_xp_dt_init(void)
66 {
67         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
68         coherency_init();
69 }
70
71 static const char * const armada_370_xp_dt_compat[] = {
72         "marvell,armada-370-xp",
73         NULL,
74 };
75
76 DT_MACHINE_START(ARMADA_XP_DT, "Marvell Armada 370/XP (Device Tree)")
77         .smp            = smp_ops(armada_xp_smp_ops),
78         .init_machine   = armada_370_xp_dt_init,
79         .map_io         = armada_370_xp_map_io,
80         .init_early     = armada_370_xp_init_early,
81         .init_irq       = irqchip_init,
82         .init_time      = armada_370_xp_timer_and_clk_init,
83         .restart        = mvebu_restart,
84         .dt_compat      = armada_370_xp_dt_compat,
85 MACHINE_END