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ARC: clockevent: DT based probe

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- timer frequency is derived from DT (no longer rely on top level
   DT "clock-frequency" probed early and exported by asm/clk.h)

 - TIMER0_IRQ need not be exported across arch code, confined to intc as
   it is property of same

 - Any failures in clockevent setup are considered pedantic and system
   panic()'s as there is no generic fallback (unlike clocksource where
   a jiffies based soft clocksource always exists)

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta
2016-01-01 17:58:45 +05:30
parent 7ec9f34a03
commit 77c8d0d6b3
3 changed files with 45 additions and 25 deletions
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9
arch/arc/include/asm/irq.h
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@@ -12,15 +12,6 @@
#define NR_CPU_IRQS 32 /* number of interrupt lines of ARC770 CPU */
#define NR_IRQS 128 /* allow some CPU external IRQ handling */
/* Platform Independent IRQs */
#ifdef CONFIG_ISA_ARCOMPACT
#define TIMER0_IRQ 3
#define TIMER1_IRQ 4
#else
#define TIMER0_IRQ 16
#define TIMER1_IRQ 17
#endif
#include <linux/interrupt.h>
#include <asm-generic/irq.h>