Add cortex-a9 local timer support for all OMAP4 based
SOCs using DT.
Cc: Benoit Cousson <b-cousson@xxxxxx>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
---
arch/arm/boot/dts/omap4.dtsi | 6 ++++++
arch/arm/mach-omap2/timer.c | 11 ++++++++---
2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 57f7cd4..8504397 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -43,6 +43,12 @@
cache-level = <2>;
};
+ local-timer {
+ compatible = "arm,cortex-a9-twd-timer";
+ reg = <0x48240600 0x20>;
+ interrupts = <1 13 0x304>;
+ };
+
/*
* The soc node represents the soc top level view. It is uses for IPs
* that are not memory mapped in the MPU view or for the MPU itself.
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 840929b..dbdd9a6 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -36,6 +36,7 @@
#include <linux/clocksource.h>
#include <linux/clockchips.h>
#include <linux/slab.h>
+#include <linux/of.h>
#include <asm/mach/time.h>
#include <plat/dmtimer.h>
@@ -384,9 +385,13 @@ static void __init omap4_timer_init(void)
if (omap_rev() != OMAP4430_REV_ES1_0) {
int err;
- err = twd_local_timer_register(&twd_local_timer);
- if (err)
- pr_err("twd_local_timer_register failed %d\n", err);
+ if (of_have_populated_dt()) {
+ twd_local_timer_of_register();
+ } else {
+ err = twd_local_timer_register(&twd_local_timer);
+ if (err)
+ pr_err("twd_local_timer_register failed %d\n", err);
+ }
}
#endif
}
--
1.7.9.5
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