summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-at91
diff options
context:
space:
mode:
authorOlof Johansson <olof@lixom.net>2017-06-18 22:53:20 -0700
committerOlof Johansson <olof@lixom.net>2017-06-18 22:53:20 -0700
commit5a55029f46d636ffed430d47c7fc1bfa0e64a3b6 (patch)
tree4e0dddf9172190dd778164c5c23ef9ccd0c73d7f /arch/arm/mach-at91
parent516835714ae25b35fe8c894b976c873f7d8f7acb (diff)
parent8a3d809373c6790b3958f74fa5640aedd4e804dd (diff)
downloadlinux-stable-5a55029f46d636ffed430d47c7fc1bfa0e64a3b6.tar.gz
linux-stable-5a55029f46d636ffed430d47c7fc1bfa0e64a3b6.tar.bz2
linux-stable-5a55029f46d636ffed430d47c7fc1bfa0e64a3b6.zip
Merge tag 'at91-ab-4.13-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into next/soc
SoC for 4.13: - New suspend/resume mode for sama5d2 - Initial support for armv7m based SoCs * tag 'at91-ab-4.13-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: ARM: at91: remove atmel_nand_data ARM: at91: fix at91_suspend_entering_slow_clock link error ARM: at91: debug: add samv7x support ARM: at91: add armv7m SoC detection ARM: at91: handle CONFIG_PM for armv7m configurations ARM: at91: Add armv7m support ARM: at91: Document armv7m compatibles ARM: at91: Documentation: add armv7m families ARM: at91: pm: fallback to slowclock when backup mode fails ARM: at91: pm: allow selecting standby and suspend modes ARM: at91: pm: Add sama5d2 backup mode Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-at91')
-rw-r--r--arch/arm/mach-at91/Kconfig16
-rw-r--r--arch/arm/mach-at91/Makefile4
-rw-r--r--arch/arm/mach-at91/Makefile.boot3
-rw-r--r--arch/arm/mach-at91/generic.h2
-rw-r--r--arch/arm/mach-at91/pm.c206
-rw-r--r--arch/arm/mach-at91/pm.h5
-rw-r--r--arch/arm/mach-at91/pm_data-offsets.c3
-rw-r--r--arch/arm/mach-at91/pm_suspend.S73
-rw-r--r--arch/arm/mach-at91/sama5.c19
-rw-r--r--arch/arm/mach-at91/samv7.c25
10 files changed, 305 insertions, 51 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 841e924143f9..7497a28a79d1 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -1,12 +1,20 @@
menuconfig ARCH_AT91
bool "Atmel SoCs"
- depends on ARCH_MULTI_V4T || ARCH_MULTI_V5 || ARCH_MULTI_V7
+ depends on ARCH_MULTI_V4T || ARCH_MULTI_V5 || ARCH_MULTI_V7 || ARM_SINGLE_ARMV7M
select COMMON_CLK_AT91
select GPIOLIB
select PINCTRL
select SOC_BUS
if ARCH_AT91
+config SOC_SAMV7
+ bool "SAM Cortex-M7 family" if ARM_SINGLE_ARMV7M
+ select COMMON_CLK_AT91
+ select PINCTRL_AT91
+ help
+ Select this if you are using an SoC from Atmel's SAME7, SAMS7 or SAMV7
+ families.
+
config SOC_SAMA5D2
bool "SAMA5D2 family"
depends on ARCH_MULTI_V7
@@ -52,6 +60,7 @@ config SOC_AT91RM9200
bool "AT91RM9200"
depends on ARCH_MULTI_V4T
select ATMEL_AIC_IRQ
+ select ATMEL_PM if PM
select ATMEL_ST
select CPU_ARM920T
select HAVE_AT91_USB_CLK
@@ -65,6 +74,7 @@ config SOC_AT91SAM9
bool "AT91SAM9"
depends on ARCH_MULTI_V5
select ATMEL_AIC_IRQ
+ select ATMEL_PM if PM
select ATMEL_SDRAMC
select CPU_ARM926T
select HAVE_AT91_SMD
@@ -123,9 +133,13 @@ config SOC_SAM_V7
config SOC_SAMA5
bool
select ATMEL_AIC5_IRQ
+ select ATMEL_PM if PM
select ATMEL_SDRAMC
select MEMORY
select SOC_SAM_V7
select SRAM if PM
+config ATMEL_PM
+ bool
+
endif
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index cfd8f60a9268..ee34aa34cc51 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -6,10 +6,10 @@
obj-$(CONFIG_SOC_AT91RM9200) += at91rm9200.o
obj-$(CONFIG_SOC_AT91SAM9) += at91sam9.o
obj-$(CONFIG_SOC_SAMA5) += sama5.o
+obj-$(CONFIG_SOC_SAMV7) += samv7.o
# Power Management
-obj-$(CONFIG_PM) += pm.o
-obj-$(CONFIG_PM) += pm_suspend.o
+obj-$(CONFIG_ATMEL_PM) += pm.o pm_suspend.o
ifeq ($(CONFIG_CPU_V7),y)
AFLAGS_pm_suspend.o := -march=armv7-a
diff --git a/arch/arm/mach-at91/Makefile.boot b/arch/arm/mach-at91/Makefile.boot
new file mode 100644
index 000000000000..eacfc3f5c33e
--- /dev/null
+++ b/arch/arm/mach-at91/Makefile.boot
@@ -0,0 +1,3 @@
+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
+# Patch waits for application at
+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index f1ead0f13c19..e2bd17237964 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -15,10 +15,12 @@
extern void __init at91rm9200_pm_init(void);
extern void __init at91sam9_pm_init(void);
extern void __init sama5_pm_init(void);
+extern void __init sama5d2_pm_init(void);
#else
static inline void __init at91rm9200_pm_init(void) { }
static inline void __init at91sam9_pm_init(void) { }
static inline void __init sama5_pm_init(void) { }
+static inline void __init sama5d2_pm_init(void) { }
#endif
#endif /* _AT91_GENERIC_H */
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 283e79ab587d..667fddac3856 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -15,6 +15,7 @@
#include <linux/of_address.h>
#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/parser.h>
#include <linux/suspend.h>
#include <linux/clk/at91_pmc.h>
@@ -22,6 +23,7 @@
#include <asm/cacheflush.h>
#include <asm/fncpy.h>
#include <asm/system_misc.h>
+#include <asm/suspend.h>
#include "generic.h"
#include "pm.h"
@@ -37,7 +39,17 @@ extern void at91_pinctrl_gpio_suspend(void);
extern void at91_pinctrl_gpio_resume(void);
#endif
-static struct at91_pm_data pm_data;
+static const match_table_t pm_modes __initconst = {
+ { 0, "standby" },
+ { AT91_PM_SLOW_CLOCK, "ulp0" },
+ { AT91_PM_BACKUP, "backup" },
+ { -1, NULL },
+};
+
+static struct at91_pm_data pm_data = {
+ .standby_mode = 0,
+ .suspend_mode = AT91_PM_SLOW_CLOCK,
+};
#define at91_ramc_read(id, field) \
__raw_readl(pm_data.ramc[id] + field)
@@ -58,15 +70,33 @@ static int at91_pm_valid_state(suspend_state_t state)
}
}
+static int canary = 0xA5A5A5A5;
-static suspend_state_t target_state;
+static struct at91_pm_bu {
+ int suspended;
+ unsigned long reserved;
+ phys_addr_t canary;
+ phys_addr_t resume;
+} *pm_bu;
/*
* Called after processes are frozen, but before we shutdown devices.
*/
static int at91_pm_begin(suspend_state_t state)
{
- target_state = state;
+ switch (state) {
+ case PM_SUSPEND_MEM:
+ pm_data.mode = pm_data.suspend_mode;
+ break;
+
+ case PM_SUSPEND_STANDBY:
+ pm_data.mode = pm_data.standby_mode;
+ break;
+
+ default:
+ pm_data.mode = -1;
+ }
+
return 0;
}
@@ -115,7 +145,7 @@ static int at91_pm_verify_clocks(void)
*/
int at91_suspend_entering_slow_clock(void)
{
- return (target_state == PM_SUSPEND_MEM);
+ return (pm_data.mode >= AT91_PM_SLOW_CLOCK);
}
EXPORT_SYMBOL(at91_suspend_entering_slow_clock);
@@ -123,50 +153,65 @@ static void (*at91_suspend_sram_fn)(struct at91_pm_data *);
extern void at91_pm_suspend_in_sram(struct at91_pm_data *pm_data);
extern u32 at91_pm_suspend_in_sram_sz;
-static void at91_pm_suspend(suspend_state_t state)
+static int at91_suspend_finish(unsigned long val)
{
- pm_data.mode = (state == PM_SUSPEND_MEM) ? AT91_PM_SLOW_CLOCK : 0;
-
flush_cache_all();
outer_disable();
at91_suspend_sram_fn(&pm_data);
+ return 0;
+}
+
+static void at91_pm_suspend(suspend_state_t state)
+{
+ if (pm_data.mode == AT91_PM_BACKUP) {
+ pm_bu->suspended = 1;
+
+ cpu_suspend(0, at91_suspend_finish);
+
+ /* The SRAM is lost between suspend cycles */
+ at91_suspend_sram_fn = fncpy(at91_suspend_sram_fn,
+ &at91_pm_suspend_in_sram,
+ at91_pm_suspend_in_sram_sz);
+ } else {
+ at91_suspend_finish(0);
+ }
+
outer_resume();
}
+/*
+ * STANDBY mode has *all* drivers suspended; ignores irqs not marked as 'wakeup'
+ * event sources; and reduces DRAM power. But otherwise it's identical to
+ * PM_SUSPEND_ON: cpu idle, and nothing fancy done with main or cpu clocks.
+ *
+ * AT91_PM_SLOW_CLOCK is like STANDBY plus slow clock mode, so drivers must
+ * suspend more deeply, the master clock switches to the clk32k and turns off
+ * the main oscillator
+ *
+ * AT91_PM_BACKUP turns off the whole SoC after placing the DDR in self refresh
+ */
static int at91_pm_enter(suspend_state_t state)
{
#ifdef CONFIG_PINCTRL_AT91
at91_pinctrl_gpio_suspend();
#endif
+
switch (state) {
- /*
- * Suspend-to-RAM is like STANDBY plus slow clock mode, so
- * drivers must suspend more deeply, the master clock switches
- * to the clk32k and turns off the main oscillator
- */
case PM_SUSPEND_MEM:
+ case PM_SUSPEND_STANDBY:
/*
* Ensure that clocks are in a valid state.
*/
- if (!at91_pm_verify_clocks())
+ if ((pm_data.mode >= AT91_PM_SLOW_CLOCK) &&
+ !at91_pm_verify_clocks())
goto error;
at91_pm_suspend(state);
break;
- /*
- * STANDBY mode has *all* drivers suspended; ignores irqs not
- * marked as 'wakeup' event sources; and reduces DRAM power.
- * But otherwise it's identical to PM_SUSPEND_ON: cpu idle, and
- * nothing fancy done with main or cpu clocks.
- */
- case PM_SUSPEND_STANDBY:
- at91_pm_suspend(state);
- break;
-
case PM_SUSPEND_ON:
cpu_do_idle();
break;
@@ -177,8 +222,6 @@ static int at91_pm_enter(suspend_state_t state)
}
error:
- target_state = PM_SUSPEND_ON;
-
#ifdef CONFIG_PINCTRL_AT91
at91_pinctrl_gpio_resume();
#endif
@@ -190,7 +233,6 @@ error:
*/
static void at91_pm_end(void)
{
- target_state = PM_SUSPEND_ON;
}
@@ -436,6 +478,79 @@ static void __init at91_pm_sram_init(void)
&at91_pm_suspend_in_sram, at91_pm_suspend_in_sram_sz);
}
+static void __init at91_pm_backup_init(void)
+{
+ struct gen_pool *sram_pool;
+ struct device_node *np;
+ struct platform_device *pdev = NULL;
+
+ if ((pm_data.standby_mode != AT91_PM_BACKUP) &&
+ (pm_data.suspend_mode != AT91_PM_BACKUP))
+ return;
+
+ pm_bu = NULL;
+
+ np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-shdwc");
+ if (!np) {
+ pr_warn("%s: failed to find shdwc!\n", __func__);
+ return;
+ }
+
+ pm_data.shdwc = of_iomap(np, 0);
+ of_node_put(np);
+
+ np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-sfrbu");
+ if (!np) {
+ pr_warn("%s: failed to find sfrbu!\n", __func__);
+ goto sfrbu_fail;
+ }
+
+ pm_data.sfrbu = of_iomap(np, 0);
+ of_node_put(np);
+ pm_bu = NULL;
+
+ np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-securam");
+ if (!np)
+ goto securam_fail;
+
+ pdev = of_find_device_by_node(np);
+ of_node_put(np);
+ if (!pdev) {
+ pr_warn("%s: failed to find securam device!\n", __func__);
+ goto securam_fail;
+ }
+
+ sram_pool = gen_pool_get(&pdev->dev, NULL);
+ if (!sram_pool) {
+ pr_warn("%s: securam pool unavailable!\n", __func__);
+ goto securam_fail;
+ }
+
+ pm_bu = (void *)gen_pool_alloc(sram_pool, sizeof(struct at91_pm_bu));
+ if (!pm_bu) {
+ pr_warn("%s: unable to alloc securam!\n", __func__);
+ goto securam_fail;
+ }
+
+ pm_bu->suspended = 0;
+ pm_bu->canary = virt_to_phys(&canary);
+ pm_bu->resume = virt_to_phys(cpu_resume);
+
+ return;
+
+sfrbu_fail:
+ iounmap(pm_data.shdwc);
+ pm_data.shdwc = NULL;
+securam_fail:
+ iounmap(pm_data.sfrbu);
+ pm_data.sfrbu = NULL;
+
+ if (pm_data.standby_mode == AT91_PM_BACKUP)
+ pm_data.standby_mode = AT91_PM_SLOW_CLOCK;
+ if (pm_data.suspend_mode == AT91_PM_BACKUP)
+ pm_data.suspend_mode = AT91_PM_SLOW_CLOCK;
+}
+
struct pmc_info {
unsigned long uhp_udp_mask;
};
@@ -481,10 +596,14 @@ static void __init at91_pm_init(void (*pm_idle)(void))
at91_pm_sram_init();
- if (at91_suspend_sram_fn)
+ if (at91_suspend_sram_fn) {
suspend_set_ops(&at91_pm_ops);
- else
+ pr_info("AT91: PM: standby: %s, suspend: %s\n",
+ pm_modes[pm_data.standby_mode].pattern,
+ pm_modes[pm_data.suspend_mode].pattern);
+ } else {
pr_info("AT91: PM not supported, due to no SRAM allocated\n");
+ }
}
void __init at91rm9200_pm_init(void)
@@ -510,3 +629,34 @@ void __init sama5_pm_init(void)
at91_dt_ramc();
at91_pm_init(NULL);
}
+
+void __init sama5d2_pm_init(void)
+{
+ at91_pm_backup_init();
+ sama5_pm_init();
+}
+
+static int __init at91_pm_modes_select(char *str)
+{
+ char *s;
+ substring_t args[MAX_OPT_ARGS];
+ int standby, suspend;
+
+ if (!str)
+ return 0;
+
+ s = strsep(&str, ",");
+ standby = match_token(s, pm_modes, args);
+ if (standby < 0)
+ return 0;
+
+ suspend = match_token(str, pm_modes, args);
+ if (suspend < 0)
+ return 0;
+
+ pm_data.standby_mode = standby;
+ pm_data.suspend_mode = suspend;
+
+ return 0;
+}
+early_param("atmel.pm_modes", at91_pm_modes_select);
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
index fc0f7d048187..f95d31496f08 100644
--- a/arch/arm/mach-at91/pm.h
+++ b/arch/arm/mach-at91/pm.h
@@ -22,6 +22,7 @@
#define AT91_MEMCTRL_DDRSDR 2
#define AT91_PM_SLOW_CLOCK 0x01
+#define AT91_PM_BACKUP 0x02
#ifndef __ASSEMBLY__
struct at91_pm_data {
@@ -30,6 +31,10 @@ struct at91_pm_data {
unsigned long uhp_udp_mask;
unsigned int memctrl;
unsigned int mode;
+ void __iomem *shdwc;
+ void __iomem *sfrbu;
+ unsigned int standby_mode;
+ unsigned int suspend_mode;
};
#endif
diff --git a/arch/arm/mach-at91/pm_data-offsets.c b/arch/arm/mach-at91/pm_data-offsets.c
index 30302cb16df0..c0a73e62b725 100644
--- a/arch/arm/mach-at91/pm_data-offsets.c
+++ b/arch/arm/mach-at91/pm_data-offsets.c
@@ -9,5 +9,8 @@ int main(void)
DEFINE(PM_DATA_RAMC1, offsetof(struct at91_pm_data, ramc[1]));
DEFINE(PM_DATA_MEMCTRL, offsetof(struct at91_pm_data, memctrl));
DEFINE(PM_DATA_MODE, offsetof(struct at91_pm_data, mode));
+ DEFINE(PM_DATA_SHDWC, offsetof(struct at91_pm_data, shdwc));
+ DEFINE(PM_DATA_SFRBU, offsetof(struct at91_pm_data, sfrbu));
+
return 0;
}
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index 96781daa671a..daca91feea6a 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S
@@ -97,15 +97,61 @@ ENTRY(at91_pm_suspend_in_sram)
str tmp1, .memtype
ldr tmp1, [r0, #PM_DATA_MODE]
str tmp1, .pm_mode
+ /* Both ldrne below are here to preload their address in the TLB */
+ ldr tmp1, [r0, #PM_DATA_SHDWC]
+ str tmp1, .shdwc
+ cmp tmp1, #0
+ ldrne tmp2, [tmp1, #0]
+ ldr tmp1, [r0, #PM_DATA_SFRBU]
+ str tmp1, .sfr
+ cmp tmp1, #0
+ ldrne tmp2, [tmp1, #0x10]
/* Active the self-refresh mode */
mov r0, #SRAMC_SELF_FRESH_ACTIVE
bl at91_sramc_self_refresh
ldr r0, .pm_mode
- tst r0, #AT91_PM_SLOW_CLOCK
- beq skip_disable_main_clock
+ cmp r0, #AT91_PM_SLOW_CLOCK
+ beq slow_clock
+ cmp r0, #AT91_PM_BACKUP
+ beq backup_mode
+ /* Wait for interrupt */
+ ldr pmc, .pmc_base
+ at91_cpu_idle
+ b exit_suspend
+
+slow_clock:
+ bl at91_slowck_mode
+ b exit_suspend
+backup_mode:
+ bl at91_backup_mode
+ b exit_suspend
+
+exit_suspend:
+ /* Exit the self-refresh mode */
+ mov r0, #SRAMC_SELF_FRESH_EXIT
+ bl at91_sramc_self_refresh
+
+ /* Restore registers, and return */
+ ldmfd sp!, {r4 - r12, pc}
+ENDPROC(at91_pm_suspend_in_sram)
+
+ENTRY(at91_backup_mode)
+ /*BUMEN*/
+ ldr r0, .sfr
+ mov tmp1, #0x1
+ str tmp1, [r0, #0x10]
+
+ /* Shutdown */
+ ldr r0, .shdwc
+ mov tmp1, #0xA5000000
+ add tmp1, tmp1, #0x1
+ str tmp1, [r0, #0]
+ENDPROC(at91_backup_mode)
+
+ENTRY(at91_slowck_mode)
ldr pmc, .pmc_base
/* Save Master clock setting */
@@ -134,18 +180,9 @@ ENTRY(at91_pm_suspend_in_sram)
orr tmp1, tmp1, #AT91_PMC_KEY
str tmp1, [pmc, #AT91_CKGR_MOR]
-skip_disable_main_clock:
- ldr pmc, .pmc_base
-
/* Wait for interrupt */
at91_cpu_idle
- ldr r0, .pm_mode
- tst r0, #AT91_PM_SLOW_CLOCK
- beq skip_enable_main_clock
-
- ldr pmc, .pmc_base
-
/* Turn on the main oscillator */
ldr tmp1, [pmc, #AT91_CKGR_MOR]
orr tmp1, tmp1, #AT91_PMC_MOSCEN
@@ -174,14 +211,8 @@ skip_disable_main_clock:
wait_mckrdy
-skip_enable_main_clock:
- /* Exit the self-refresh mode */
- mov r0, #SRAMC_SELF_FRESH_EXIT
- bl at91_sramc_self_refresh
-
- /* Restore registers, and return */
- ldmfd sp!, {r4 - r12, pc}
-ENDPROC(at91_pm_suspend_in_sram)
+ mov pc, lr
+ENDPROC(at91_slowck_mode)
/*
* void at91_sramc_self_refresh(unsigned int is_active)
@@ -314,6 +345,10 @@ ENDPROC(at91_sramc_self_refresh)
.word 0
.sramc1_base:
.word 0
+.shdwc:
+ .word 0
+.sfr:
+ .word 0
.memtype:
.word 0
.pm_mode:
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index 6d157d0ead8e..3d0bf95a56ae 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -34,7 +34,6 @@ DT_MACHINE_START(sama5_dt, "Atmel SAMA5")
MACHINE_END
static const char *const sama5_alt_dt_board_compat[] __initconst = {
- "atmel,sama5d2",
"atmel,sama5d4",
NULL
};
@@ -45,3 +44,21 @@ DT_MACHINE_START(sama5_alt_dt, "Atmel SAMA5")
.dt_compat = sama5_alt_dt_board_compat,
.l2c_aux_mask = ~0UL,
MACHINE_END
+
+static void __init sama5d2_init(void)
+{
+ of_platform_default_populate(NULL, NULL, NULL);
+ sama5d2_pm_init();
+}
+
+static const char *const sama5d2_compat[] __initconst = {
+ "atmel,sama5d2",
+ NULL
+};
+
+DT_MACHINE_START(sama5d2, "Atmel SAMA5")
+ /* Maintainer: Atmel */
+ .init_machine = sama5d2_init,
+ .dt_compat = sama5d2_compat,
+ .l2c_aux_mask = ~0UL,
+MACHINE_END
diff --git a/arch/arm/mach-at91/samv7.c b/arch/arm/mach-at91/samv7.c
new file mode 100644
index 000000000000..11386f190c83
--- /dev/null
+++ b/arch/arm/mach-at91/samv7.c
@@ -0,0 +1,25 @@
+/*
+ * Setup code for SAMv7x
+ *
+ * Copyright (C) 2013 Atmel,
+ * 2016 Andras Szemzo <szemzo.andras@gmail.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/system_misc.h>
+#include "generic.h"
+
+static const char *const samv7_dt_board_compat[] __initconst = {
+ "atmel,samv7",
+ NULL
+};
+
+DT_MACHINE_START(samv7_dt, "Atmel SAMV7")
+ .dt_compat = samv7_dt_board_compat,
+MACHINE_END