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Diffstat (limited to 'arch/ppc/syslib/m8xx_setup.c')
-rw-r--r--arch/ppc/syslib/m8xx_setup.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/ppc/syslib/m8xx_setup.c b/arch/ppc/syslib/m8xx_setup.c
index 1cc3abe6fa43..688616de3cde 100644
--- a/arch/ppc/syslib/m8xx_setup.c
+++ b/arch/ppc/syslib/m8xx_setup.c
@@ -135,6 +135,16 @@ static struct irqaction tbint_irqaction = {
.name = "tbint",
};
+/* per-board overridable init_internal_rtc() function. */
+void __init __attribute__ ((weak))
+init_internal_rtc(void)
+{
+ /* Disable the RTC one second and alarm interrupts. */
+ out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, in_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc) & ~(RTCSC_SIE | RTCSC_ALE));
+ /* Enable the RTC */
+ out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, in_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc) | (RTCSC_RTF | RTCSC_RTE));
+}
+
/* The decrementer counts at the system (internal) clock frequency divided by
* sixteen, or external oscillator divided by four. We force the processor
* to use system clock divided by sixteen.
@@ -183,10 +193,7 @@ void __init m8xx_calibrate_decr(void)
out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_rtcsck, KAPWR_KEY);
out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_tbk, KAPWR_KEY);
- /* Disable the RTC one second and alarm interrupts. */
- out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, in_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc) & ~(RTCSC_SIE | RTCSC_ALE));
- /* Enable the RTC */
- out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, in_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc) | (RTCSC_RTF | RTCSC_RTE));
+ init_internal_rtc();
/* Enabling the decrementer also enables the timebase interrupts
* (or from the other point of view, to get decrementer interrupts