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ARM: OMAP4: Add local timer support for Device Tree

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Add cortex-a9 local timer support for all OMAP4 based
SOCs using DT.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
This commit is contained in:
Santosh Shilimkar 2012-07-04 18:32:32 +05:30 committed by Benoit Cousson
parent 926fd45ba9
commit eed0de2772
2 changed files with 12 additions and 0 deletions
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6
arch/arm/boot/dts/omap4.dtsi
View File

@ -45,6 +45,12 @@
cache-level = <2>;
};
local-timer@0x48240600 {
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.

6
arch/arm/mach-omap2/timer.c
View File

@ -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>
@ -386,6 +387,11 @@ static void __init omap4_timer_init(void)
if (omap_rev() != OMAP4430_REV_ES1_0) {
int err;
if (of_have_populated_dt()) {
twd_local_timer_of_register();
return;
}
err = twd_local_timer_register(&twd_local_timer);
if (err)
pr_err("twd_local_timer_register failed %d\n", err);