armada-370-xp.c
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/*
* Device Tree support for Armada 370 and XP platforms.
*
* Copyright (C) 2012 Marvell
*
* Lior Amsalem <alior@marvell.com>
* Gregory CLEMENT <gregory.clement@free-electrons.com>
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk-provider.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/io.h>
#include <linux/clocksource.h>
#include <linux/dma-mapping.h>
#include <linux/mbus.h>
#include <linux/slab.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include "armada-370-xp.h"
#include "common.h"
#include "coherency.h"
#include "mvebu-soc-id.h"
static void __init armada_370_xp_map_io(void)
{
debug_ll_io_init();
}
static void __init armada_370_xp_timer_and_clk_init(void)
{
of_clk_init(NULL);
clocksource_of_init();
coherency_init();
BUG_ON(mvebu_mbus_dt_init());
#ifdef CONFIG_CACHE_L2X0
l2x0_of_init(0, ~0UL);
#endif
}
static void __init i2c_quirk(void)
{
struct device_node *np;
u32 dev, rev;
/*
* Only revisons more recent than A0 support the offload
* mechanism. We can exit only if we are sure that we can
* get the SoC revision and it is more recent than A0.
*/
if (mvebu_get_soc_id(&rev, &dev) == 0 && dev > MV78XX0_A0_REV)
return;
for_each_compatible_node(np, NULL, "marvell,mv78230-i2c") {
struct property *new_compat;
new_compat = kzalloc(sizeof(*new_compat), GFP_KERNEL);
new_compat->name = kstrdup("compatible", GFP_KERNEL);
new_compat->length = sizeof("marvell,mv78230-a0-i2c");
new_compat->value = kstrdup("marvell,mv78230-a0-i2c",
GFP_KERNEL);
of_update_property(np, new_compat);
}
return;
}
static void __init armada_370_xp_dt_init(void)
{
if (of_machine_is_compatible("plathome,openblocks-ax3-4"))
i2c_quirk();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char * const armada_370_xp_dt_compat[] = {
"marvell,armada-370-xp",
NULL,
};
DT_MACHINE_START(ARMADA_XP_DT, "Marvell Armada 370/XP (Device Tree)")
.smp = smp_ops(armada_xp_smp_ops),
.init_machine = armada_370_xp_dt_init,
.map_io = armada_370_xp_map_io,
.init_time = armada_370_xp_timer_and_clk_init,
.restart = mvebu_restart,
.dt_compat = armada_370_xp_dt_compat,
MACHINE_END