projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9ae6f740 TP |
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> | |
| 9cbbc515 | 17 | #include <linux/clk-provider.h> |
| d834d26a | 18 | #include <linux/of_address.h> |
| 9ae6f740 TP |
19 | #include <linux/of_platform.h> |
| 20 | #include <linux/io.h> | |
| 573145f0 | 21 | #include <linux/clocksource.h> |
| 53d2f889 | 22 | #include <linux/dma-mapping.h> |
| 87e1bed4 | 23 | #include <linux/mbus.h> |
| 85e618a1 | 24 | #include <linux/slab.h> |
| e33369cb | 25 | #include <asm/hardware/cache-l2x0.h> |
| 9ae6f740 TP |
26 | #include <asm/mach/arch.h> |
| 27 | #include <asm/mach/map.h> | |
| 28 | #include <asm/mach/time.h> | |
| 6eb5be34 | 29 | #include "armada-370-xp.h" |
| 9ae6f740 | 30 | #include "common.h" |
| 45f5984a | 31 | #include "coherency.h" |
| 85e618a1 | 32 | #include "mvebu-soc-id.h" |
| 9ae6f740 | 33 | |
| 99b3d294 | 34 | static void __init mvebu_timer_and_clk_init(void) |
| d834d26a | 35 | { |
| 5ae13ef4 | 36 | of_clk_init(NULL); |
| 573145f0 | 37 | clocksource_of_init(); |
| d834d26a | 38 | coherency_init(); |
| b9ae0b50 | 39 | BUG_ON(mvebu_mbus_dt_init()); |
| e33369cb TP |
40 | #ifdef CONFIG_CACHE_L2X0 |
| 41 | l2x0_of_init(0, ~0UL); | |
| 42 | #endif | |
| 53d2f889 GC |
43 | } |
| 44 | ||
| 85e618a1 GC |
45 | static void __init i2c_quirk(void) |
| 46 | { | |
| 47 | struct device_node *np; | |
| 48 | u32 dev, rev; | |
| 49 | ||
| 50 | /* | |
| 51 | * Only revisons more recent than A0 support the offload | |
| 52 | * mechanism. We can exit only if we are sure that we can | |
| 53 | * get the SoC revision and it is more recent than A0. | |
| 54 | */ | |
| 55 | if (mvebu_get_soc_id(&rev, &dev) == 0 && dev > MV78XX0_A0_REV) | |
| 56 | return; | |
| 57 | ||
| 58 | for_each_compatible_node(np, NULL, "marvell,mv78230-i2c") { | |
| 59 | struct property *new_compat; | |
| 60 | ||
| 61 | new_compat = kzalloc(sizeof(*new_compat), GFP_KERNEL); | |
| 62 | ||
| 63 | new_compat->name = kstrdup("compatible", GFP_KERNEL); | |
| 64 | new_compat->length = sizeof("marvell,mv78230-a0-i2c"); | |
| 65 | new_compat->value = kstrdup("marvell,mv78230-a0-i2c", | |
| 66 | GFP_KERNEL); | |
| 67 | ||
| 68 | of_update_property(np, new_compat); | |
| 69 | } | |
| 70 | return; | |
| 71 | } | |
| 72 | ||
| 99b3d294 | 73 | static void __init mvebu_dt_init(void) |
| 9ae6f740 | 74 | { |
| 85e618a1 GC |
75 | if (of_machine_is_compatible("plathome,openblocks-ax3-4")) |
| 76 | i2c_quirk(); | |
| 9ae6f740 TP |
77 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
| 78 | } | |
| 79 | ||
| 61505e11 TP |
80 | static const char * const armada_370_xp_dt_compat[] = { |
| 81 | "marvell,armada-370-xp", | |
| 9ae6f740 TP |
82 | NULL, |
| 83 | }; | |
| 84 | ||
| 8c4340fc | 85 | DT_MACHINE_START(ARMADA_XP_DT, "Marvell Armada 370/XP (Device Tree)") |
| 45f5984a | 86 | .smp = smp_ops(armada_xp_smp_ops), |
| 99b3d294 TP |
87 | .init_machine = mvebu_dt_init, |
| 88 | .init_time = mvebu_timer_and_clk_init, | |
| 9ae6f740 | 89 | .restart = mvebu_restart, |
| 61505e11 | 90 | .dt_compat = armada_370_xp_dt_compat, |
| 9ae6f740 | 91 | MACHINE_END |