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Diffstat (limited to 'arch/arm/cpu/arm926ejs/nomadik/timer.c')
-rw-r--r--arch/arm/cpu/arm926ejs/nomadik/timer.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/arch/arm/cpu/arm926ejs/nomadik/timer.c b/arch/arm/cpu/arm926ejs/nomadik/timer.c
deleted file mode 100644
index 775d0b7..0000000
--- a/arch/arm/cpu/arm926ejs/nomadik/timer.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * (C) Copyright 2009 Alessandro Rubini
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/mtu.h>
-
-/*
- * The timer is a decrementer, we'll left it free running at 2.4MHz.
- * We have 2.4 ticks per microsecond and an overflow in almost 30min
- */
-#define TIMER_CLOCK (24 * 100 * 1000)
-#define COUNT_TO_USEC(x) ((x) * 5 / 12) /* overflows at 6min */
-#define USEC_TO_COUNT(x) ((x) * 12 / 5) /* overflows at 6min */
-#define TICKS_PER_HZ (TIMER_CLOCK / CONFIG_SYS_HZ)
-#define TICKS_TO_HZ(x) ((x) / TICKS_PER_HZ)
-
-/* macro to read the decrementing 32 bit timer as an increasing count */
-#define READ_TIMER() (0 - readl(CONFIG_SYS_TIMERBASE + MTU_VAL(0)))
-
-/* Configure a free-running, auto-wrap counter with no prescaler */
-int timer_init(void)
-{
- ulong val;
-
- writel(MTU_CRn_ENA | MTU_CRn_PRESCALE_1 | MTU_CRn_32BITS,
- CONFIG_SYS_TIMERBASE + MTU_CR(0));
-
- /* Reset the timer */
- writel(0, CONFIG_SYS_TIMERBASE + MTU_LR(0));
- /*
- * The load-register isn't really immediate: it changes on clock
- * edges, so we must wait for our newly-written value to appear.
- * Since we might miss reading 0, wait for any change in value.
- */
- val = READ_TIMER();
- while (READ_TIMER() == val)
- ;
-
- return 0;
-}
-
-/* Return how many HZ passed since "base" */
-ulong get_timer(ulong base)
-{
- return TICKS_TO_HZ(READ_TIMER()) - base;
-}
-
-/* Delay x useconds */
-void __udelay(unsigned long usec)
-{
- ulong ini, end;
-
- ini = READ_TIMER();
- end = ini + USEC_TO_COUNT(usec);
- while ((signed)(end - READ_TIMER()) > 0)
- ;
-}
-
-unsigned long long get_ticks(void)
-{
- return get_timer(0);
-}
-
-ulong get_tbclk(void)
-{
- return CONFIG_SYS_HZ;
-}