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Diffstat (limited to 'arch/arm/mach-ux500/timer.c')
-rw-r--r--arch/arm/mach-ux500/timer.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index 52e55337aa9b..bd8e110cbcc2 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -8,6 +8,7 @@
#include <linux/errno.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <asm/smp_twd.h>
@@ -41,10 +42,17 @@ static void __init ux500_twd_init(void)
#define ux500_twd_init() do { } while(0)
#endif
+const static struct of_device_id prcmu_timer_of_match[] __initconst = {
+ { .compatible = "stericsson,db8500-prcmu-timer-4", },
+ { },
+};
+
static void __init ux500_timer_init(void)
{
void __iomem *mtu_timer_base;
void __iomem *prcmu_timer_base;
+ void __iomem *tmp_base;
+ struct device_node *np;
if (cpu_is_u8500()) {
mtu_timer_base = __io_address(U8500_MTU0_BASE);
@@ -53,6 +61,22 @@ static void __init ux500_timer_init(void)
ux500_unknown_soc();
}
+ /* TODO: Once MTU has been DT:ed place code above into else. */
+ if (of_have_populated_dt()) {
+ np = of_find_matching_node(NULL, prcmu_timer_of_match);
+ if (!np)
+ goto dt_fail;
+
+ tmp_base = of_iomap(np, 0);
+ if (!tmp_base)
+ goto dt_fail;
+
+ prcmu_timer_base = tmp_base;
+ }
+
+dt_fail:
+ /* Doing it the old fashioned way. */
+
/*
* Here we register the timerblocks active in the system.
* Localtimers (twd) is started when both cpu is up and running.