From 8da15e17408c58ff45dc8e01dad8775246ef2220 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 19 Nov 2013 22:17:06 +0100 Subject: [PATCH] ARM: ux500: decomission the non-DT MTU init sequence The MTU is now only initialized using the native clocksource device tree matching. Signed-off-by: Linus Walleij --- 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 #include #include -#include #include @@ -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); clksrc_dbx500_prcmu_init(prcmu_timer_base); ux500_twd_init(); }