On 11/19/2013 10:27 PM, Linus Walleij wrote:
The MTU is now only initialized using the native clocksource
device tree matching.
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
arch/arm/mach-ux500/timer.c | 28 ++--------------------------
1 file changed, 2 insertions(+), 26 deletions(-)
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index ca60bbd9361b..1a9051b6f932 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -10,7 +10,6 @@
#include <linux/clocksource.h>
#include <linux/of.h>
#include <linux/of_address.h>
-#include <linux/platform_data/clocksource-nomadik-mtu.h>
#include <asm/smp_twd.h>
@@ -44,17 +43,14 @@ const static struct of_device_id prcmu_timer_of_match[] __initconst = {
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_family() || cpu_is_ux540_family()) {
- mtu_timer_base = __io_address(U8500_MTU0_BASE);
+ if (cpu_is_u8500_family() || cpu_is_ux540_family())
prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
- } else {
+ else
ux500_unknown_soc();
- }
np = of_find_matching_node(NULL, prcmu_timer_of_match);
if (!np)
@@ -67,26 +63,6 @@ void __init ux500_timer_init(void)
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.
- * MTU register a clocksource, clockevent and sched_clock.
- * Since the MTU is located in the VAPE power domain
- * it will be cleared in sleep which makes it unsuitable.
- * We however need it as a timer tick (clockevent)
- * during boot to calibrate delay until twd is started.
- * RTC-RTT have problems as timer tick during boot since it is
- * depending on delay which is not yet calibrated. RTC-RTT is in the
- * always-on powerdomain and is used as clockevent instead of twd when
- * sleeping.
- * The PRCMU timer 4 register a clocksource and
- * sched_clock with higher rating then MTU since is always-on.
- *
- */
- if (!of_have_populated_dt())
- nmdk_timer_init(mtu_timer_base, IRQ_MTU0);
If no timer have been defined in the dt [or wrongly defined], is there a
message to tell the user what is wrong ?
clksrc_dbx500_prcmu_init(prcmu_timer_base);
ux500_twd_init();
}
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